Answer:
Option B. $0.70
Step-by-step explanation:
First day fine = $0.10
Second day fine (doubled or $0.30 which is lesser)
= $0.10 + $0.10 [$0.10 is lesser than $0.30]
= $0.20
Third day fine = $0.20 + $0.20 [ $0.20 is lesser than $0.30]
= $0.40
Fourth day fine = $0.40 + $0.30 = $0.70
[$0.30 is cheaper than doubling the amount $0.40 + $0.40]
Therefore, the total fine for a book on the fourth day is $0.70
Laura mailsthree packages the first weighs 11.238 pounds the second weighs 9.45 pounds the third weighs 16.2 pounds what is the total weight of the packages
Answer:
36.888
Step-by-step explanation:
you would just add them all up. 11.238 + 9.45 + 16.2 then you'll get your answer which is 36.888
On the coordinate grid, your campsite is located at (-1,3) and the next checkpoint station is located at (3,-3). Each unit in the coordinate plane represents 1.4 miles. Find the distance you have to hike to reach the next checkpoint station
Answer:
The answer to your question is: 10. 1 miles
Step-by-step explanation:
data
P = (-1, 3)
Q = (3, -3)
Formula
d = √((x2-x1)² + (y2-y1)²)
d = √)(3- -1)² + (-3-3))
d = √ (4² + -6²)
d = √ (16 + 36)
d = √ 52
d = 7.21 units
but
1 units ----------------------- 1.4 miles
7.21 units --------------------- x
x = 7.21 x 1.4/1 = 10.1 miles
Two persons are to run a race, but one can run 10 meters per second, whereas the other can run 4 meters per second. If the slower runner has a 75-meter head start, how long will it be before the faster runner catches the slower runner, if they begin at the same time?
Answer:12.5 seconds
Step-by-step explanation:hconsidering Runner 1 with a speed of 10m/s
and Runner 2 with a speed of 4 m/s
the equation of displacement for a uniform movement is
x=V*t
so x1=V1*t
and x2=V2*t
and the problem condition is x2=x1+75m
so we proceed to solve the equations.
from equation 2 t=x2/V2
substituting in equation 1 we have
x1=V1(x2/V2) and then the 3 equation
x1=V1((x1+75m)/v2
finally x1=75*(V1/(V2-V1)) =75*(10/(10-4))=125m
then t=(x1/v1)=125/10=12.5 seconds
Answer:
12.5 seconds
Step-by-step explanation:
Speed of the first person = 10 meter per second
Speed of the second person = 4 meter per second
Relative velocity of faster person = 10 - 4 = 6 meter per second
since distance between both the person is = 75 meter.
Therefore, time to cover this distance by faster person = [tex]\frac{Distance}{Speed}[/tex]
[tex]\frac{75}{6}[/tex]
= 12.5 seconds.
Faster runner catches the slower runner after 12.5 seconds.
Plot the inequality on the number line.
x ≤ 1 or x>8
Answer:
See the picture
Step-by-step explanation:
Interval (-∞, 1] U (8, ∞)
On a number line the inequality x ≤ 1 shows all the numbers less than 1 and x>8 shows all the numbers greater than 8.
What is inequality?Inequality is the relationship between two expressions that are not equal, employing a sign such as ≠ “not equal to,” > “greater than,” or < “less than.”.
A number line in elementary mathematics is a representation of a graduated straight line that serves as an abstraction for real numbers, represented by the symbol R." It is assumed that every point on a number line corresponds to a real number and that every real number corresponds to a point.
The graph of the two inequality is attached with the answer below where the inequality x ≤ 1 shows all the numbers less than 1 and x>8 shows all the numbers greater than 8.
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A caterer charges $800 for a party of 25 guests. For a party of 60 guests, the cost is $1,430. Enter a linear model that represents the total cost, C, as a function of g, the number of guests at a party.
Answer:
C = 18g +350
Step-by-step explanation:
The 2-point form of the equation of a line is useful for this. For points (x1, y1) and (x2, y2), the equation is ...
y = (y2 -y1)/(x2 -x1)(x -x1) +y1
For points (25, 800) and (60, 1430), the line is ...
y = (1430 -800)/(60 -25)(x -25) +800
y = 630/35(x -25) +800
y = 18x +350
Using the variables required by the problem statement, this is ...
C = 18g +350
According to a study in a medical journal, 202 of a sample of 5,990 middle-aged men had developed diabetes. It also found that men who were very active (burning about 3,500 calories daily) were a third as likely to develop diabetes compared with men who were sedentary. Assume that one in 10 middle-aged men is very active, and the rest are classified as sedentary. What is the probability that a middle-aged man with diabetes is very active? (Round your answer to four decimal places.)
To find the probability that a middle-aged man with diabetes is very active, we need to use conditional probability. We calculate the probability of a middle-aged man being very active and the probability that a middle-aged man has diabetes. Then we use these probabilities to find the conditional probability of being very active given diabetes.
Explanation:To find the probability that a middle-aged man with diabetes is very active, we need to use conditional probability. Let's first calculate the probability of a middle-aged man being very active:
P(very active) = 1/10
The remaining probability would be for men who are sedentary:
P(sedentary) = 1 - P(very active) = 9/10
Now we can calculate the probability that a middle-aged man with diabetes is very active using conditional probability:
P(very active | diabetes) = (P(very active) * P(diabetes | very active)) / P(diabetes)
Since the question states that men who are very active are a third as likely to develop diabetes compared to men who are sedentary, we can calculate:
P(diabetes | very active) = 202/5990
P(diabetes) = (202/5990 * 1/10) + (P(diabetes | sedentary) * 9/10)
Substituting the values, we can calculate the probability that a middle-aged man with diabetes is very active:
P(very active | diabetes) = (1/10 * 202/5990) / ((202/5990 * 1/10) + (P(diabetes | sedentary) * 9/10))
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The probability that a middle-aged man with diabetes is very active is:
[tex]\[ {0.0356} \][/tex].
Given data:
- [tex]\( P(A) = \frac{1}{10} = 0.1 \)[/tex](probability of being very active)
- [tex]\( P(S) = \frac{9}{10} = 0.9 \)[/tex] (probability of being sedentary)
- [tex]\( P(D | S) \)[/tex] (probability of developing diabetes given sedentary) is not directly given, but we can deduce it using the provided data and the fact that the risk of diabetes for active men is a third of that for sedentary men.
- Total probability of developing diabetes, [tex]\( P(D) = \frac{202}{5990} \approx 0.0337 \)[/tex]
First, we need to calculate [tex]\( P(D | A) \) and \( P(D | S) \)[/tex]:
Since active men are a third as likely to develop diabetes compared to sedentary men:
[tex]\[ P(D | A) = \frac{1}{3} P(D | S) \][/tex]
Using the law of total probability for P(D) :
[tex]\[ P(D) = P(D | A)P(A) + P(D | S)P(S) \][/tex]
Substitute the given values and the relationship between P(D | A) and P(D | S):
[tex]\[ 0.0337 = \left( \frac{1}{3} P(D | S) \right)(0.1) + P(D | S)(0.9) \][/tex]
Solve for P(D | S) :
[tex]\[ 0.0337 = \frac{1}{30} P(D | S) + 0.9 P(D | S) \]\[ 0.0337 = 0.0333 P(D | S) + 0.9 P(D | S) \]\[ 0.0337 = (0.0333 + 0.9) P(D | S) \]\[ 0.0337 = 0.9333 P(D | S) \]\[ P(D | S) = \frac{0.0337}{0.9333} \approx 0.0361 \][/tex]
Now calculate P(D | A) :
[tex]\[ P(D | A) = \frac{1}{3} P(D | S) = \frac{1}{3} \times 0.0361 \approx 0.0120 \][/tex]
Next, apply Bayes' theorem to find P(A | D) :
[tex]\[ P(A | D) = \frac{P(D | A) P(A)}{P(D)} \]\[ P(A | D) = \frac{0.0120 \times 0.1}{0.0337} \]\[ P(A | D) = \frac{0.0012}{0.0337} \approx 0.0356 \][/tex]
Brittany will be working full time this summer to save for her goal of having $10,000 by the time she's 21. Brittany has an account that will pay
3.5% interest, compounded monthly. She'll turn 17 at the end of the summer. About how much will Brittany have to deposit at the end of the
summer so that her money can grow into $10,000 by the time she's 21?
A $8,663
B. $8,681
OC $8.695
D. $8,720
Answer:
8,695
Step-by-step explanation:
The formula for compound interest is :
Money = C * (1+r)^n
Where
C is the money invested
r is the interest
n is the periods you are investing
Money is the money you will have at the end of the period
In this problem C is what you need to find, the interest is 3.5% (anually) and since it is compounded monthly you have to divide it by 12 months to know exactly the interest of each month:
3.5/12 = 0.2917
The number of periods invested is 4 years, and because the interest is monthly the exact number of periods is 48 ( 4* 12 )
Replacing and solving:
10000 = C * (1+0.002917)^48
C = 8,695
Answer:
8,695
Step-by-step explanation:
Penny had a bag of marbles she gave 1/3 of them to Rebecca and 1/4 of the remaining marbles to John Penny then had 24 marbles left in the bag how many marbles the penny start with
Answer:
38
Step-by-step explanation:
1/3+1/4=7/12
7/12*24=12
24+12=26
Suppose that a is a one-dimensional array of ints with a length of at least 2. Which of the following code fragments successfully exchange(s) the values of the first two elements of a?I a[ 0 ] = a[ 1 ];a[ 1 ] = a[ 0 ];II int t = a[ 0 ];a[ 0 ] = a[ 1 ];a[ 1 ] = t;III a[ 0 ] = a[ 0 ] - a[ 1 ];a[ 1 ] = a[ 0 ] + a[ 1 ];a[ 0 ] = a[ 1 ] - a[ 0 ];A) I onlyB) II onlyC) III onlyD) I and II onlyE) II and III only
Answer:
E)II and III only
Step-by-step explanation:
This can be seen with examples. Say a[0]=1 and and a[1]=2.
for I , the first line of code would be:
a[0]=a[1];
thus, we would get a new value for a[0]=2.
The second line of code
a[1]=a[0]; uses the new value of a[0], so we would get a[1]=2.
The end result is a[0]=2, and a[1]=2 which doesn't exchange the values of the first two elements.
For II the first line of code
int t= a[0]; saves the original value of a[0] to t, so we get t=1.
the second line of code
a[0]=a[1]; changes the value of a[0] to that of a[1]. Thus, in our example a[0]=2.
the final line
a[1]=t; changes the value of a[1] to the original value of a[0], giving us a[1]=1 and a[0]=2, what we were looking for.
For III
the first line of code
a[0]=a[0]-a[1];
gives us
a[0]=1-2
the secon line
a[1]=a[1]+a[0];
takes the new value of a[0] and replaces it in the expression
a[1]= 2+(1-2)=1
the last line
a[0]=a[1]-a[0];
takes the new value of a[0] and a[1] and replaces the in the expression
a[0]=1-(1-2)=1-1+2=2
which exchanges the values needed.
So we can see that only II and III do what we require, giving us E as the answer.
I need help asap! for a few questions of mine!
Find the slope of the line that passes through the following points. Simplify your answer.
(−6,9) and (−3,1)
[tex]\bf (\stackrel{x_1}{-6}~,~\stackrel{y_1}{9})\qquad (\stackrel{x_2}{-3}~,~\stackrel{y_2}{1}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{1}-\stackrel{y1}{9}}}{\underset{run} {\underset{x_2}{-3}-\underset{x_1}{(-6)}}}\implies \cfrac{-8}{-3+6}\implies -\cfrac{8}{3}[/tex]
A ladder is leaning against a building. The ladder is 10m long and it is sitting on
the ground 4m out from the building. What is the angle that the ladder makes with
the ground?
Check the picture below.
make sure your calculator is in Degree mode.
The angle that the ladder makes with the ground would be 66.42 degrees.
What are trigonometric identities?Trigonometric identities are the functions that include trigonometric functions such as sine, cosine, tangents, secant, and, cot.
We are given that ladder is leaning against a building. The ladder is 10m long and it is sitting on the ground 4m out from the building.
The side adjacent to the angle is given, and the hypotenuse of the triangle is the unknown.
The cosine relation applies
Cos = Adjacent/Hypotenuse
We are given the hypotenuse = ladder length
Cos (∅)= (4 )/10
Cos (∅)≈ 2/5
(∅)≈ [tex]Cos^{-1}[/tex]2/5
(∅) = 66.42
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If A and B are independent events with P(A) = 0.5 and P(B) = 0.5, then P(A ∩ B) a. is 1.00. b. is 0.5. c. is 0.00. d. None of these alternatives are correct.
Answer:
The answer is (d) "None of the these alternatives are correct"
Step-by-step explanation:
If two events A and B are independent, the probability of the intersection [tex]P(A\cap B)[/tex] is defined as:
[tex]P(A\cap B)=P(A)\cdot P(B)[/tex]
Therefore, in the exercise:
[tex]P(A\cap B)=P(A)\cdot P(B)=0.5\cdot 0.5\\P(A\cap B)=0.25[/tex]
which give (d) "None of the these alternatives are correct"
For independent events A and B with P(A) = 0.5 and P(B) = 0.5, the probability of both events occurring, P(A ∩ B), is the product of their probabilities, which is 0.5 × 0.5 = 0.25. The correct answer is 'd. None of these alternatives are correct.'
Explanation:The question revolves around the concept of independent events in probability. Since events A and B are independent, the probability of both events occurring together, P(A ∩ B), is the product of their individual probabilities. Thus, using the given probabilities P(A) = 0.5 and P(B) = 0.5, the probability of both A and B occurring is found by multiplying these probabilities together.
P(A ∩ B) = P(A) × P(B) = 0.5 × 0.5 = 0.25.
Therefore, the correct answer is not listed among the provided alternatives, so the correct choice would be 'd. None of these alternatives are correct.'
(a) Derive an equation of the line passing through the points A(0, 545) and B(4, 726). (Let t be the independent variable and y be the dependent variable.)
Answer:
The equation of the line is [tex]y=45.25t+545[/tex]
Step-by-step explanation:
The general for of a line is:
[tex]y=mt+n[/tex] (1)
where:
[tex]m[/tex] is the slope of the line and [tex]m[/tex] is the intercept with the axis of the dependent variable, [tex]y[/tex] in this case.
In order to obtain the value of the slope ([tex]m[/tex]) we can use the corresponding slope formula:
[tex]m=\frac{y_{2}-y_1 }{t_2-t_1}[/tex] (2)
where [tex]t_1, t_2, y_1[/tex] and [tex]y_2[/tex] are the corresponding coordinates of the given points. In this case:
[tex]t_1=0\\t_2=4\\y_1=545\\y_2=726\\[/tex]
Substituting these values in equation (2) we obtain:
[tex]m=\frac{726-545}{4-0}=\frac{181}{4}=45.25\\m=45.25[/tex]
Hence, the line equation is now:
[tex]y=45.25t+n[/tex] (3)
Now to obtain the value of [tex]n[/tex] you can follow two options:
You can substitute one of your points, [tex]A[/tex] or [tex]B[/tex], in equation (3). In this way, you will obtain an equation where the variable is [tex]n[/tex]Note that for this question, it is easier to select point A because of having the independent variable equals to zero [tex]t=0[/tex]. Hence, substituting point A in equation (3):
[tex]45.25*0+n=545\\n=545[/tex]
Therefore, the line equation is: [tex]y=45.25t+545[/tex]
The second option to find [tex]n[/tex] is to think of the meaning of the intercept. The intercept of a line is defined as the point in which the line crosses the axis of the dependent variable, which also means that the value of the independent variable for this point is zero. From this, we could have automatically said that [tex]n[/tex] is equal to [tex]545[/tex].
See the attachment for a plot of the line.
Final answer:
To derive the equation of the line through A(0, 545) and B(4, 726), calculate the slope (45.25) and use the point-slope form to get the final equation: [tex]\(y = 45.25t + 545\).[/tex]
Explanation:
To derive an equation of the line passing through points A(0, 545) and B(4, 726), first we need to find the slope of the line. The slope, usually represented as[tex]\(m\),[/tex] is given by the change in \(y\) over the change in \(x\), which is [tex]\(\Delta y / \Delta x\).[/tex]We use the formula [tex]\(m = (y_2 - y_1) / (x_2 - x_1)\).[/tex]
Substituting the given points into the formula:
[tex]\[m = \frac{726 - 545}{4 - 0} = \frac{181}{4} = 45.25\][/tex]
Now that we have the slope, we use the point-slope form of a line's equation, which is [tex]\(y - y_1 = m(x - x_1)\), where \((x_1, y_1)\)[/tex]is a point on the line. Since one point we have is A(0, 545), we can substitute the values in:
[tex]\[y - 545 = 45.25 \cdot (x - 0)\][/tex]
Therefore, the equation simplifies to:
[tex]\[y = 45.25x + 545\][/tex]
This is the equation of the line in slope-intercept form, with \(t\) being the independent variable and \(y\) being the dependent variable.
A researcher wondered whether drivers treat bicycle riders differently when they wear helmets. He rigged his bicycle with an ultrasonic sensor that could measure how close each car was that passed him. He then rode on alternating days with and without a helmet. Of the 30003000 times that a car passed him, he found that when he wore his helmet, motorists passed 3.273.27 inches closer to him, on average, than when his head was bare. What is the WhoWho in this study? That is, identify the cases under study.
A. The bike riders
B. Each instance of a car passing a rider
C. Bike helmets
D. The cars
Answer:
In this case study we have following groups:
1. Population: It had all the cars which passed the bicyclist. Out of which 3000 cars were taken.
2. Who: Each instance of a car passing a rider, means the drivers passing by.
That is the 3000 cars which passed the researcher on his bicycle.
3. What: The distance at which cars pass the bicycle rider. The distance the drivers stayed away from his bike.
The subject of this question is the cars in the study.
Explanation:The Who in this study refers to the cases under study. In this case, the cases under study are the cars. The researcher rigged his bicycle with an ultrasonic sensor to measure how close each car was that passed him, and he observed that when he wore a helmet, motorists passed closer to him compared to when his head was bare. Therefore, the cars are the subject of this study.
A plumber earns $50 for a repair job, plus an additional $75 per hour he works. On Tuesday, he completed 3 repair jobs and earned a total of more than $600.
Part A Write an inequality that can be used to determine h, the number of hours the plumber worked Tuesday
Part B: Solve your inequality to determine the number of hours the plumber worked Tuesday. Provide mathematical justification for your answer.
Answer:
A. [tex]150+75h>600[/tex]
B. More than 6 hours
Step-by-step explanation:
A plumber earns $50 for a repair job, so he will earn $150 for three repair jobs.
Let h be the number of hours the plumber worked on Tuesday. He earns $75 per hour worked, so he will earn $75h in h hours.
In total, the plumber earned $(150 + 75h)
A. On Tuesday, he completed 3 repair jobs and earned a total of more than $600. Thus
[tex]150+75h>600[/tex]
B. Solve this inequality. Subtract 150:
[tex]150+75h-150>600-150\\ \\75h>450[/tex]
Divide by 75:
[tex]h>\dfrac{450}{75}\\ \\h>6[/tex]
This means, the plumber worked more than 6 hours.
An irrational number is a terminating decimal.
True
False
A notebook is 12 inches long. If the area of the notebook is 96 square inches, what is the width of the notebook?
A.
9 inches
B.
7 inches
C.
10 inches
D.
8 inches
Answer:
D.8 inches
Step-by-step explanation:
Last year, sales at Company X were 10% greater in February than in January, 15% less in March than in Feb, 20% greater in April than in March, 10% less in May than in April, and 5% greater in June than in May. In which month were sales closest to Jan?a. Febb. Marc. Aprd. Maye. June
Answer:
May
Step-by-step explanation:
Let x be the sales in January,
∵ Sales were 10% greater in February than in January,
So, the sales in February = (100 +10)% of x
= 110% of x
= [tex]\frac{110x}{100}[/tex]
= 1.1x
∵ it is 15% less in March than in Feb,
Sales in march = (100-15)% sales in February
= 85% of 1.1x
= 0.935x
∵ It is 20% greater in April than in March,
Sales in April = (100+20)% of sales in march
= 120% of 0.935x
= 1.122x,
∵ It is 10% less in May than in April
Sales in May = (100-10)% of sales in march
= 90% of 1.122x,
= 1.0098x,
∵ It is 5% greater in June than in May
Sales in June = (100+5)% of sales in march
= 105% of 1.0098x,
= 1.5147x
∵ 1.0098x is much closure to x than 1.1x, 0.935x, 1.122x and 1.5147x
Hence, the sales in May is closest to sales in January.
what is 10 = 7 - m.?
In order to get the answer to this question you will have to rearrange and solve the question step by step.
[tex]10=7-m[/tex]
Rearrange:
[tex]10-(7-m)=0[/tex]
[tex]10-7=3[/tex]
Rearrange once more:
[tex]m+3=0[/tex]
[tex]-3 -3[/tex]
[tex]m=-3[/tex]
Therefore the answer is "m=-3."
Hope this helps.
A rectangle has side lengths of (2x-5) meters and (2x+6) meters. Write a linear expression in simplest form to represent the perimeter. Find the perimeter if the value of x is 12 meters
Answer:
P = 8x + 2
P = 98 when x = 12
Step-by-step explanation:
the perimeter is 2 times width + length
P = 2(w + l)
w = 2x - 5
l = 2x + 6
replacing both terms in the perimeter:
P = 2(2x - 5 + 2x + 6)
P = 2(4x + 1)
P = 8x + 2
Evaluating P for x = 12
P = 8(12) + 2
P = 98
Swifty Corporation started the year with total assets of $300000 and total liabilities of $240000. During the year the business recorded $633000 in revenues, $335000 in expenses, and dividends of $61000. Stockholders’ equity at the end of the year was
a) 275000
b) 363000
c) 305000
d) 297000
Answer:
The answer is d) 297000
Step-by-step explanation:
The stockholders' equity of a company represents the amount of money that will be returned to the accionists if all the assests will be liquidated and the compan'y debt will be paid. So to calculate the Swifty Corporation stockholders' equity at the end of the year you need to add all what enters to the company (assets and revenues) and substract all what goes out (liabilities, expenses and dividends).
- What enters?
The starting assets = $300.000Revenues = $633.000Total incomes = $300.000 + $633.000 = $933.000
- What goes out?
Liabilities = $240.000Expenses = $335.000Dividends = $ 61.000Total expenses = $240.000 + $335.000 + $61.000 = $636.000
Stockholders' equity = Total income - Total expenses
Stockholders' equity = $933.000 - $636.000 = $297.000
SOLVE FOR W
w/8.75=7
In order to get the answer to this question you will have to multiply both sides by 8.75 and you will get your answer.
[tex]\frac{w}{8.75} =7[/tex]
[tex]\times8.75\times8.75[/tex]
[tex]7\times8.75=61.25[/tex]
[tex]w=61.25[/tex]
Therefore your answer is "w = 61.25."
Hope this helps.
Describe the line segments. the cut sides of a wedge of apple pie: a) parallel b) intersecting c) skew
Answer:
They are intersecting line segments ⇒ answer b
Step-by-step explanation:
* Lets explain the types of the lines
- Parallel lines lie in the same plane and never intersect each other
- Intersecting lines are lines that meet each other in exactly one point
- Skew lines are lines that are in different planes and never intersect
* Now lets solve the problem
- The line segments that cut sides of a wedge of apple pie
∵ The wage of apple pie could represent a plane
∵ The line segments cut the sides of the wedge
∴ The lines are in the same plane
∵ Skew lines are in different planes and never intersect
∴ The lines can not be skew
∵ The line segments that cut sides of the wage must be intersected
at exactly one point
∵ Parallel lines never intersected
∴ The lines can not be parallel lines
∴ They are intersecting line segments
Translate these statements into English, where R(x) is "x is a rabbit "and H(x) is "x hops" and the domain consists of all animals. a) ∀x(R(x) → H(x)) b) ∀x(R(x) ∧ H(x)) c) ∃x(R(x) → H(x)) d) ∃x(R(x) ∧ H(x))
Answer:
A- for every animal, if the animal is a rabbit, the animal hops.
B- every animal is a rabbit and it hops.
C-there are animals that, if they are rabbits, they hop.
D-there are animals that are rabbits and they hop
Answer:
a) For every animal, if the animal is a rabbit, then the animal hops
b) For every animal, the animal is a rabbit and the animal hops
c) there are animals such that if they are rabbits then they hop
d) there are animals such that they are rabbits and they hop
Step-by-step explanation:
∀ For every
a⇒b a then b
a∧b a and b
∃ there are
Robert has 96 balloons and 72 pieces of candy to make gift bags for his party. How many gift bags can he make if he wants to use all of the balloons and all of the candy?
Answer:
24
Step-by-step explanation:
The greatest common divisor of 72 and 96 is 24. Robert can make any number of bags that is a divisor of 24. If he wants to make the largest number possible, then he can make 24 bags with 4 balloons and 3 pieces of candy in each one.
__
72 = 2³·3²
96 = 2⁵·3
The greatest common divisor is the product of the common factors: 2³·3 = 24.
Researchers wanted to explore self-esteem in adolescent boys and adolescent girls. Each respondent completed a 10-item self-esteem scale (they chose one rating for each item from a Likert-type scale, 1 = strongly disagree and 5 = strongly agree). The sum of the 10 ratings was each respondent's self-esteem score. Their results were: t = 2.01, d = .90 (40 girls, 40 boys).What statistical test did the researchers use to determine if there was a statisticallysigniFcant di±erence in levels of self-esteem between the boys and the girls?
Answer:
The statistical tests that researchers use to determine if there was a statisticallysignificant difference in levels of self-esteem between the boys and the girls were the T-test and Cohen's d.
Step-by-step explanation:
A statistical test is utilized to evaluate differences between groups (in this case, between boy and girls). The dependent variable was the self-esteem while the independent variable was the sex. A T-test is utilized to establish differences in the mean of two groups. The null hypothesis for a T-test is that means of the groups are the same; the statistical value is t. A Cohen's d test indicates standardized differences between the mean of both groups. It usually accompanies a T-test result; the statistical value is d.
How many solutions does the following system have?
3x+2y=1
-9x-6y=3
A. Infinitely many solutions
B. Two solutions
C. One solution
D. No solutions
Answer:
Option D. No solutions
Step-by-step explanation:
we have
[tex]3x+2y=1[/tex] -----> equation A
[tex]-9x-6y=3[/tex] ----> equation B
Multiply by -3 both sides equation A
[tex]-3(3x+2y)=-3(1)[/tex]
[tex]-9x-6y=-3[/tex] -----> equation C
Compare equation B and equation C
Equation B and equation C are parallel lines with different y-intercept
Verify
For x=0
Equation C
[tex]-9(0)-6y=-3[/tex] ----->[tex]y=0.5[/tex]
The y-intercept is the point (0,0.5)
Equation B
[tex]-9(0)-6y=3[/tex] ----->[tex]y=-0.5[/tex]
The y-intercept is the point (0,-0.5)
therefore
Lines do not intersect
The system has no solution
see the attached figure to better understand the problem
Final answer:
The system of equations has infinitely many solutions because the second equation is an exact multiple of the first, indicating that both equations are equivalent and represent the same line.
Explanation:
To determine how many solutions the system of equations has, we can look at the coefficients of the variables x and y in both equations.
The first equation is 3x + 2y = 1.
The second equation is -9x - 6y = 3. If we multiply the first equation by -3, we obtain -9x - 6y = -3.
We notice that the second equation is an exact multiple of the first equation after our manipulation. This means that the two equations are equivalent, and every solution to one equation is also a solution to the other. Thus, the system does not have a unique solution, but rather infinitely many solutions, as both lines represented by these equations would perfectly overlap on a graph.
The correct answer to the question is A. Infinitely many solutions.
Please help me understand this problem! I don’t understand the methods to understand how to solve it
Answer:
Perimeter at the big rectangle is 156 cm.
Step-by-step explanation:
Let's see how to calculate it.
1. First of all you know that perimeter in the blue one is 20cm, so imagine this:
L (long side); S (short side)
2L + 2S =20
and we consider that L = 4S
So, solving the equation:
2.4S + 2S =20
10S=20
S=20/10
S=2
L=8
2. Side at the gold square is 8, the same at the long side in the blue rectangle. So, if you see on the right side in the big one, we got 2 + 8 + 8 + (?). Take a look to the green. Green square is the gold + a short piece and you can understand the short piece as 2 short sides from the blue. If we give numbers we have 8 + 2 + 2, 12.
Now, 2+8+8+12 = 30cm
3. Let's go to the long side in the big one.
We have long side from blue (8) and as you see, side at the orange square must be side at the yellow + short at the blue, so 8+2 =10. We have four oranges square so 10+10+10+10=40, and +8 =48
4. Now that we have the two sides in the big one, let's find the perimeter with the rectangle formula:
2L + 2S =P
2.48 + 2.30 = 156 cm.
A rock is thrown at a window that is located 18.0 m above the ground. The rock is thrown at an angle of 40.0° above horizontal. The rock is thrown from a height of 2.00 m above the ground with a speed of 30.0 m/s and experiences no appreciable air resistance. If the rock strikes the window on its upward trajectory, from what horizontal distance from the window was it released?
Answer:
27.32 m
Step-by-step explanation:
We are given that
Height of window from the ground=18 m
Height of rock form the ground=2 m
Speed of thrown rock=30 m/s
We have to find the horizontal distance from the window from which rock was release.
Difference between window and rock=18-2=16 m
Initial vertical velocity component=[tex]30sin40^{\circ}=19.28 [/tex]m/s
Initial horizontal velocity component=[tex]30cos 40^{\circ}=22.98 m/s[/tex]
If the rock is reached to maximum height
Then, maximum height=[tex]\frac{v^2}{2g}=\frac{(19.28)^2}{2\times 9.8}=18.9731 m[/tex]
Time taken by rock to reach maximum height=[tex]\frac{v}{g}=\frac{19.28}{9.8}=1.96775 s[/tex]
Distance between window and maximum height at which rock reached=18.9731-16=2.973 m
Time to drop 2.973 m=[tex]\sqrt{\frac{2h}{g}}=\sqrt{\frac{2\cdot 2.973}{9.8}}=0.77893 s[/tex]
Time to be at 16 m=1.96775-0.77893=1.189 s
Horizontal distance=[tex]1.189\times 22.98=27.32 m[/tex]
Hence, horizontal distance of rock from the window from which rock was released=27.32 m
The rock was released approximately 71.1 meters horizontally from the window. This calculation is based on the rock's initial speed of 30.0 m/s, launch angle of 40.0°, and the fact that it struck the window on its upward trajectory with no air resistance.
To solve this problem, we can use the kinematic equations of motion. We need to find the horizontal distance the rock was released from the window.
1. First, we can find the time it takes for the rock to reach its maximum height. We can use the following kinematic equation:
[tex]\[v_y = u_y + at\][/tex]
Where:
- [tex]\(v_y\)[/tex] is the final vertical velocity (0 m/s at the maximum height),
- [tex]\(u_y\)[/tex] is the initial vertical velocity (30.0 m/s, since it's thrown vertically),
- \(a\) is the vertical acceleration due to gravity (-9.81 m/s²),
- \(t\) is the time.
Rearrange the equation to solve for t:
[tex]\[0 = 30 - 9.81t\]\\\\[/tex]
[tex]\[t = \frac{30}{9.81} \approx 3.06 \, \text{s}\][/tex]
2. Now, we can find the horizontal distance using the horizontal motion equation:
[tex]\[d_x = u_x \cdot t\][/tex]
Where:
- [tex]\(d_x\)[/tex] is the horizontal distance we want to find.
- [tex]\(u_x\)[/tex] is the horizontal component of the initial velocity
[tex](30.0 m/s * cos(40°)).[/tex]
- \(t\) is the time calculated in step 1.
Plug in the values:
[tex]\[d_x = (30 \cdot \cos(40°)) \cdot 3.06 \approx 71.1 \, \text{m}\][/tex]
So, the rock was released approximately 71.1 meters horizontally from the window.
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What is the value of 5 in 5,476,807,139
The value of 5 in 5,476,807,139 is five billion, as it is positioned in the billions place. This is explained by the concept of place value.
Explanation:The value of 5 in the number 5,476,807,139 refers to its place value in the numerical system. In this case, the 5 is in the billions place. This means that, in terms of place value, that 5 actually represents [5 × 1,000,000,000], which is 5,000,000,000 or five billion. The concept of place value is important in mathematics, it tells you how much each digit in a number is worth according to its position.
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