Answer:
x = -16
Step-by-step explanation:
3
(— • x) - -24 = 0
2
-24 -24 • 2
-24 = ——— = ———————
1 2
For this case we must solve the following equation:
[tex]\frac {3} {- 2x} = 24[/tex]
Multiplying by 2x on both sides of the equation:
[tex]-3 = 24 * 2x\\-3 = 48x[/tex]
Dividing between 48 on both sides of the equation:
[tex]x = - \frac {3} {48}[/tex]
We simplify:
[tex]x = - \frac {1} {16}[/tex]
Answer:[tex]x = - \frac {1} {16}[/tex]
Which of the following is the equation of a line that passes through (-2,1) and (-4,-3)?
Answer:
The equation is y= 2x+5
Step-by-step explanation:
Lets find the slope of the line through the points (-2,1) and (-4,-3).
where x1 = -2, y1= 1, x2= -4, y2 = -3.
Now apply slope formula:
m= y2-y1/ x2-x1
m= -3-1/-4-(-2)
m = -4/-4+2
m= -4/-2
Divide the term by 2:
m = 2
Now we will apply point slope formula:
y-y1 = m (x-x1)
Now substitute the values in the formula:
y-1=2(x-(-2))
y-1 =2(x+2)
y-1=2x+4
Now combine the constants:
y= 2x+4+1
y=2x+5
So the equation is y= 2x+5 ....
In a city study about recycling, researchers found that of the 148,227
residents participating in the program, 72% responded that they would prefer
that newspaper and plastic be picked up on the same day. This is an example
of
B im pretty sure its B
Answer:
D. descriptive statistics.Step-by-step explanation:
Notice that the paragraph is describing some results they got of a recent survey. That is, they are giving specific statistical data about what people prefer.
So, this is an example of descriptive statistics. Remember that descriptive statistics is about using means, medians, standard deviation, percentages or any other stats that help to describe a phenomenom.
Therefore, the right answer is D.
what is the average rate of change from x=-4 to x=1
Answer:
- 1
Step-by-step explanation:
The average rate of change of f(x) in the close interval [ a, b ] is
[tex]\frac{f(b)-f(a)}{b-a}[/tex]
here [ a, b ] = [ - 4, 1 ]
From the graph
f(b) = f(1) = - 1
f(a) = f(- 4) = 4
average rate of change = [tex]\frac{-1-4}{1-(-4)}[/tex] = [tex]\frac{-5}{5}[/tex] = - 1
the scale of a map is 1:500000 the actual distance between two town is 172 km calculate the distance, in centimeters, between two towns on the map.
Answer:
34.4 cm
Step-by-step explanation:
The scale of the map is 1:500000
This means 1 cm in the map is equivalent to 500000 cm in actual.
So, first we need to convert the distance between the 2 towns in centimeters.
The distance between two towns is 172 km
172 km = 172 x 1000 meters = 172,000 meters
172,000 meters = 172,000 x 100 cm = 17,200,000 cm
500,000 cm in actual on the map = 1 cm
1 cm in actual on the map = [tex]\frac{1}{500000}[/tex] cm
17,200,000 cm in actual on the map will be = [tex]\frac{1}{500000} \times 17200000 = 34.4[/tex] cm
Thus, 172 km actual distance would be represented by 34.4 cm on the map
The distance between two towns on a map, with a scale of 1:500000 is 34.4 cm.
The question asks us to calculate the distance, in centimeters, between two towns on a map given the scale of the map is 1:500000, and the actual distance between the two towns is 172 km. First, we convert the actual distance from kilometers to centimeters by multiplying 172 km by 100,000 (since 1 km = 100,000 cm). This gives us 17,200,000 cm. Then, we use the map's scale to find the map distance. The scale 1:500000 means that 1 cm on the map equals 500000 cm in the real world. Therefore, we divide the real-world distance in centimeters by the scale factor (17,200,000 cm / 500000 = 34.4 cm). Thus, the distance between the two towns on the map is 34.4 cm.
1.) Which system of equations below give the solution (-1,-2)?
(1)
(3)
y = x - 3
y = -x - 1
y = -x - 3
y = x - 1
(2)
y = x - 3
(4)
y = -x - 3
y=-x-1
y = x - 1
Answer:
y = -x - 3
Step-by-step explanation:
Plug in -1 for x and your result will come out to 1 because of that double negative [-(-1) = 1]. Next, deduct 3 from 1 to get -2.
I am joyous to assist you anytime.
ASAP PLS.
#22-6: A particular substance is worth $1.46 per cubic centimeter. Assume the figure is composed of this substance. What would it's value be?
Answer:
[tex]\$19,710[/tex]
Step-by-step explanation:
step 1
Find the volume of the composite figure
The volume of the composite figure is equal to the volume of the cube plus the volume of the square prism
so
[tex]V=15^{3}+15^{2}(45)[/tex]
[tex]V=13,500\ cm ^{3}[/tex]
step 2
Find the value of the figure
Multiply the volume by $1.46 per cubic centimeter
[tex]13,500(1.46)=\$19,710[/tex]
need help with 5-8 , please help!!!!!
Select the equivalent forms.
50% =
10% =
75% =
Answer:
The answers would be:
1) 1/2
2) 1/10
3) 3/4
Step-by-step explanation:
Percentages are always calculated by multiplying the percentages with 100. Like in this example, 50% means 0.5. This 0.5 was multiplied before by 100 to get this percentage. So to find out the equivalent forms, we would simplify the percentage like:
50%-------> 0.5
10%--------> 0.1
75%--------> 0.75
So
0.5 means 1/2 of the total value
0.1 means 1/10 of the total value
0.75 means 3/4 of the total value.
Answer:
Took Quiz 100%.... 50%= 0.50 and 10%= 0.10 and 75% =0.75
PLEASE HELP! WILL MARK BRAINLIEST!!
A surveyor is “shooting a line” to a point on a tree 70 m from his current position. After rotating his surveying instrument 25° to the left, he “shoots” another line to a point on a fence post 35 m away. Determine the distance between the point on the tree to the point on the fence post. (Do not assume that the triangle shown is a right triangle) Show all work. Round answer to the nearest hundredths.
Use the Law of Sines to find the measure of
Find the measure of
Answer:
41.04 meters
Step-by-step explanation:
The questions which involve calculating the angles and the sides of a triangle either require the sine rule or the cosine rule. In this question, the two sides that are given are adjacent to each other the given angle is the included angle. The initial position is given by A. The tree is denoted as C and the fence post is denoted as B. Since the use of sine rule will complicate the question, it will be easier to solve this question using the cosine rule. Therefore, cosine rule will be used to calculate the length of BC. The cosine rule is:
BC^2 = AB^2 + AC^2 - 2*AB*AC*cos(BAC).
The question specifies that AC = 70 meters, BAC = 25°, and AB = 35 meters. Plugging in the values:
BC^2 = 35^2 + 70^2 - 2(35)(70)*cos(25°).
Simplifying gives:
BC^2 = 1684.091844.
Taking square root on the both sides gives BC = 41.04 meters (rounded to two decimal places).
Therefore, the distance between the point on the tree to the point on the fence post is 41.04 meters!!!
A bag of marbles contains 3 yellow marbles, 4 blue marbles, and 8 red marbles. Which of the following is true of selecting a marble that is a primary color (red, yellow, or blue)? Select all that apply.
The probability is
This event is certain to happen.
This event will not happen.
The probability is 1.
The probability is 0.
Answer:
the probability is the event is certain to happen
Step-by-step explanation:
Answer:
This event is certain to happen.
The probability is 1.
Step-by-step explanation:
Probability theory aims to explain the chance of an event occurring. In this case, there are 3 yellow balls, 4 blue balls and 8 red balls. The total of balls will be 3 + 4 + 8 = 15
If a random ball is removed, it can be any of three colors. The color that has the most balls will have a higher chance of being chosen from the 15 totals.
Likelihood of drawing a red ball: 8/15
Probability of a yellow ball: 3/15
Blue ball probability: 4/15
The question explains that only one ball will be removed and explains that there are only 3 colors. Therefore, when removing a ball, it will certainly be one of three colors.
This can be confirmed by adding the probability of each ball: 8/15 + 3/15 + 4/15 = 15/15 = 1
Thus, if a primary ball is removed, it will certainly be one of three colors. Moreover we can say that chance of being red is greater than being blue, which is greater than being yellow.
Why do you think the acceleration due to gravity is represented by a negative number?
Answer:
Step-by-step explanation:
Acceleration due to gravity is the rate at which an object changes its velocity due to the force of gravity.On Earth, the average acceleration due to gravity is -9.81 m/s².The acceleration due to gravity is ALWAYS negative. Any object affected only by gravity (a projectile or an object in free fall) has an acceleration of -9.81 m/s², regardless of the direction.
The acceleration is negative when going up because the speed is decreasing. The acceleration is negative when going down because it is moving in the negative direction, down. Even at the top of the path where the instantaneous speed is 0 m/s, the acceleration is still -9.81 m/s². ...
Find the slope of DE and FG
slope of DE would be [tex]\( m_{DE} = \frac{(2c - b)}{(0 - (-a))} = \frac{(2c - b)}{a} \).[/tex]
slope of FG would be[tex]\( m_{FG} = \frac{(0 - c)}{(0 - (a+b))} = \frac{-c}{-(a+b)} = \frac{c}{a+b} \).[/tex]
To find the slope of line segments DE and FG from a trapezoid on a coordinate plane, we can follow these steps:
1. Identify the Coordinates of Endpoints:
- For DE, identify coordinates D and E.
- For FG, identify coordinates F and G.
2. Use the Slope Formula:
- The slope m of a line passing through two points [tex]\( (x_1, y_1) \) and \( (x_2, y_2) \) is given by \( m = \frac{(y_2 - y_1)}{(x_2 - x_1)} \).[/tex]
3. Calculate the Slope for DE:
- Plug the coordinates of D and E into the slope formula.
4. Calculate the Slope for FG:
- Plug the coordinates of F and G into the slope formula.
Given the coordinates in the image, let's calculate the slopes for DE and FG:
For DE:
- Let's say D has coordinates (-a, b) and E has coordinates (0, 2c)
- The slope of DE would be [tex]\( m_{DE} = \frac{(2c - b)}{(0 - (-a))} = \frac{(2c - b)}{a} \).[/tex]
For FG:
- Let's say F has coordinates[tex]\( (a+b, c) \)[/tex] and G has coordinates (0, 0) .
- The slope of FG would be[tex]\( m_{FG} = \frac{(0 - c)}{(0 - (a+b))} = \frac{-c}{-(a+b)} = \frac{c}{a+b} \).[/tex]
There is a pie eating contest with 9participants. There are 46 pies that are all eaten. Which of the following best describes how many pies each person ate if they are very evenly matched?
To determine the average number of pies eaten by each participant in a contest with 9 participants and 46 pies, divide the total pies by the total participants. The result is approximately 5.11 pies per person, indicating they ate very evenly with most having eaten about 5 pies.
The question asks us to find out how many pies each person ate in a pie eating contest with 9 participants and 46 pies consumed. To calculate this, we divide the total number of pies by the number of participants. Here's the calculation:
Divide 46 pies by 9 participants to get the average number of pies per person.
The result is approximately 5.11 pies per person.
Since we can't have a fraction of a pie eaten in a real context, it suggests that participants ate either 5 or 6 pies each, if they are very evenly matched.
Therefore, the best description of how many pies each person ate, assuming they are very evenly matched, would be approximately 5 pies per person, with some participants possibly having eaten 6 pies to account for the total of 46 pies.
Which choice is equivalent to the product below? For any nonnegative real number √2•√10•√5
A. 4√25
B. 5√2
C. 2√50
D. 10
Answer: The answer is D. 10! its correct I checked.
Step-by-step explanation:
Answer this problem. 3⁄14 ÷ 2⁄7 = ?
Answer:
3/4
Step-by-step explanation:
3/14 ÷ 2⁄7
Copy dot flip
3/14 * 7/2
We rewrite
3/2 * 7/14
Canceling a 7 from 7 and 14
3/2 * 1/2
Multiplying straight across
3*1 =3
2*2=4
3/4
For this case we must solve the following expression:
[tex]\frac {\frac {3} {14}} {\frac {2} {7}} =[/tex]
Applying double C we have:
[tex]\frac {3 * 7} {14 * 2} =\\\frac {21} {28} =[/tex]
for simplify we divide the numerator and denominator by 7, then we have:
[tex]\frac {\frac {21} {7}} {\frac {28} {7}} =\\\frac {3} {4}[/tex]
In decimal form we have to:
[tex]\frac {3} {4} = 0.75[/tex]
Answer:
[tex]\frac {3} {4} = 0.75[/tex]
What is -0.8+1.4n=2+0.7n
Answer:
n=4
Step-by-step explanation:
To solve combine your like terms.
You can start by adding 0.8 to both sides and subtracting 0.7n from both sides.
[tex]-0.8+1.4n=2+0.7n\\1.4n=2.8+0.7n\\0.7n=2.8[/tex]
Next, divide both sides by 0.7 to isolate for n.
[tex]0.7n=2.8\\n=4[/tex]
Solve the following system:
y = x + 3
4x + y = 18
A.(6,3)
B.(3,6)
C.(-3,6)
D.(3,-6)
Answer:
B. (3, 6)Step-by-step explanation:
[tex]\left\{\begin{array}{ccc}y=x+3&(1)\\4x+y=18&(2)\end{array}\right\\\\\text{substitute (1) to (2):}\\\\4x+(x+3)=18\\\\(4x+x)+3=18\qquad\text{subtract 3 from both sides}\\\\5x=15\qquad\text{divide both sides by 5}\\\\x=3\\\\\text{put the value of x to (1):}\\\\y=3+3\\\\y=6[/tex]
Is the answer 4/5 ? Can someone help please ?
Answer:
[tex]m=-\frac{4}{5}[/tex]
Step-by-step explanation:
We can take 2 arbitrary points in the graph and solve for slope using the formula shown below.
Note: we will use the 2 points (2,-3) & (-3,1)
Where x_1 = 2, y _1 = -3 and x _ 2 = -3 and y _ 2 = 1
The formula:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Let's plug the numbers and find the slope:
[tex]m=\frac{1-(-3)}{-3-2}\\m=\frac{4}{-5}\\m=-\frac{4}{5}[/tex]
Hence, thsi is the slope.
Two kilograms of ground cinnamon is packaged into bags containing 38 g each . There will also be some cinnamon left over . How many bags will there be
Answer:
52
Step-by-step explanation:
2 kg is the same as 2000 g.
2000 g / 38 g = 52.6
There will be 52 bags (with some cinnamon left over).
Help, what is the measure of arc QS
Answer:
168°
Step-by-step explanation:
∠QRS is an angle formed by 2 chords of the circle and is half the measure of its intercepted arc QS, that is
m QS = 2 × 84° = 168°
Applying the inscribed angle theorem, the measure of arc QS is: 168°.
What is the Inscribed Angle Theorem?According to the inscribed angle theorem, the measure of an inscribed angle in a circle equals half of the measure of the intercepted arc.
Based on the inscribed angle theorem,
arc QS = 2(m∠QRS)
arc QS = 2(84)
arc QS = 168°
Therefore, applying the inscribed angle theorem, the measure of arc QS is: 168°.
Learn more about the inscribed angle theorem on:
https://brainly.com/question/5436956
I need help with this.
Answer:
(a) Plan B, $4 more
(b) 140, Plan A
Solve the equation by completing the square. Round to the nearest hundredth if necessary. 4x2 + 8x – 32 = 0
[tex]4x^2 + 8x - 32 = 0\\x^2+2x-8=0\\x^2+2x+1-9=0\\(x+1)^2=9\\x+1=3 \vee x+1=-3\\x=2 \vee x=-4[/tex]
For this case we must solve the following expression by completing squares:
[tex]4x ^ 2 + 8x-32 = 0[/tex]
We divide between 4 on both sides of the equation:
[tex]x ^ 2 + 2x-8 = 0[/tex]
We add 8 to both sides of the equation:
[tex]x ^ 2 + 2x = 8[/tex]
We divide the middle term between 2 and square, this we add to both sides of the equation:
[tex]x ^ 2 + 2x + (\frac {2} {2}) ^ 2 = 8 + (\frac {2} {2}) ^ 2\\x ^ 2 + 2x + 1 ^ 2 = 8 + 1\\x ^ 2 + 2x + 1 ^ 2 = 9\\(x + 1) ^ 2 = 9[/tex]
We apply root to both sides:
[tex]x + 1 =\pm \sqrt {9}[/tex]
We have two roots:
[tex]x_ {1} = \sqrt {9} -1 = 3-1 = 2\\x_ {2} = - \sqrt {9} -1 = -3-1 = -4[/tex]
Answer:
[tex]x_ {1} = 2\\x_ {2} = - 4[/tex]
Find the volume of a cylinder that has a radius of 7 and a height of 18.
Answer:
V≈2770.88
Step-by-step explanation:
The volume of a cylinder that has a radius of 7 and a height of 18 is 2770.88.
In order to find the answer, you should use the formula πr²h.
R means radius and H means Height.
V=πr2h=π·72·18≈2770.88472
Answer:
V = 882pi units^3
or approximately
2769.48 units^3
Step-by-step explanation:
The column of a cylinder is given by
V = pi * r^2 * h
We know the radius is 7 and the height is 18
V = pi * 7^2 *18
V =pi *49 *18
V =882 pi
If we want an approximate answer, we can approximate pi by 3.14
V = 3.14 * 882
V =2769.48
A class consists of 55% boys and 45% girls. It is observed that 25% of the class are boys and scored an A on the test, and 35% of the class are girls and scored an A on the test. If a student is chosen at random and is found to be a girl, the probability that the student scored an A is .
Answer:
The probability that the student scored an A is : 0.778
Step-by-step explanation:
There are 55% boys and 45% girls
So, No of boys is: 55/100
No of girls is: 45/100
So, total no of girls are: 45
Since 35% of the girls scored A on test
No of girls who scored A on test = 35
The probability that the student scored an A is: 35/45
The probability that the student scored an A is : 0.778
Answer:
[tex]P(A | B)=\frac{7}{9}=0.778[/tex]
Step-by-step explanation:
Let's call B the event that consists of the selected student being a girl
Call A to the event in which the selected student obtained an A.
Then we look for the probability that A will occur given that B. That is, we look for P(A | B)
This is a conditional probability and is calculated using the following formula
[tex]P(A | B)=\frac{P(A\ and\ B)}{P(B)}[/tex]
In this case
[tex]P(B)=0.45\\P(A\ and\ B)=0.35[/tex]
So
[tex]P(A | B)=\frac{0.35}{0.45}[/tex]
[tex]P(A | B)=\frac{7}{9}=0.778[/tex]
Solve 2^(x-1) =11 change of base
Answer:
[tex]x=4.459[/tex]
Step-by-step explanation:
We have the following equation
[tex]2^{(x-1)} =11[/tex]
To solve the function, apply the equation [tex]log_2[/tex] on both sides of the equation
[tex]log_2(2^{(x-1)}) =log_2(11)[/tex]
Remember that
[tex]log_b(b)^x =x[/tex]
So
[tex](x-1) =log_2(11)[/tex]
[tex]x =log_2(11) + 1[/tex]
Finally
[tex]x=4.459[/tex]
Answer:
x = 4.46
Step-by-step explanation:
We are to solve the following expression:
[tex]2^{(x-1)}=11[/tex]
Taking the natural logarithm of both sides of the equation to remove the variable from the exponent. to get:
[tex] ln ( 2 ^ { x - 1 } ) = l n ( 1 1 ) [/tex]
[tex] ( x - 1 ) l n ( 2 ) = l n ( 1 1 ) [/tex]
Applying the distributive property:
[tex]xln(2)-1ln(2)=ln(11)[/tex]
Solving for x to get:
[tex]x=\frac{ln(11)}{ln(2)} +1[/tex]
x = 4.46
X-y +2=-1
X+y +32=-3
2x-y +22=0
What is the simplified form of the quantity y squared plus 7y plus 12 over the quantity y squared minus 3y minus 18?
y minus 4 over y minus 6
y minus 4 over y plus 6
y plus 4 over y minus 6
y plus 4 over y plus 6
Answer:
The correct option is C
Step-by-step explanation:
The given expression is:
=y²+7y+12/y²-3y-18
Break the middle term of both the numerator and denominator:
=y²+4y+3y+12/y²-6y+3y-18
Take the common from the expressions:
=y(y+4)+3(y+4)/y(y-6)+3(y-6)
=(y+3)(y+4)/(y+3)(y-6)
The same terms will be cancelled: Then we have,
=(y+4)/(y-6)
Therefore the correct option is C....
Answer:
A iS the answer i got it right on my test
Step-by-step explanation:
Y-4/Y-5
I need help please.
Answer:
The factors of 2q²-5pq-2q+5p are (2q-5p) (q-1)....
Step-by-step explanation:
The given expression is:
2q²-5pq-2q+5p
Make a pair of first two terms and last two terms:
(2q²-5pq) - (2q-5p)
Now factor out the common factor from each group.
Note that there is no common factor in second group. So we will take 1 as a common factor.
q(2q-5p) -1(2q-5p)
Now factor the polynomial by factoring out the G.C.F, 2q-5p
(2q-5p) (q-1)
Thus the factors of 2q²-5pq-2q+5p are (2q-5p) (q-1)....
The lengths in centimeters of four line segments are shown below 3.1,3.5,3 1/5, 4.2 which list shows the lengths in order from least to greatest
ok i think your answer will be from least to greatest it would be this 3 1/5, 3.1, 3.5, 4.2
Hope i helped let me know if i got it right if not i am very sorry.
The order of four line segments from least to greatest is 3.1, 3.2, 3.5, 4.2 or 3.1. 3 1/5, 3.5, 4.2.
What is number?A number is a mathematical entity that can be used to count, measure, or name things. For an example, 1, 2, 56, 2.6, 34 etc. are the numbers.
We have:
The lengths in centimetres of four line segments are:
3.1, 3.5, 3 1/5, 4.2
We can write 3 whole 1/5 as 16/5 or 3.2
3 1/5 = 3.2
3.1, 3.5, 3.2, 4.2
Order from least to greatest:
3.1, 3.2, 3.5, 4.2 or
3.1. 3 1/5, 3.5, 4.2
Thus, the order of four line segments from least to greatest is 3.1, 3.2, 3.5, 4.2 or 3.1. 3 1/5, 3.5, 4.2.
Learn more about the number here:
brainly.com/question/17429689
#SPJ2
Please help with 1 and 2
Answer:
1. B. a=14, b=2
2. D. a=1, b=1.4
Step-by-step explanation:
The exponential growth function can be represented as
[tex]y=a\cdot b^x,[/tex]
where b is the growth factor.
1. When the function has equation
[tex]g(x)=14\cdot 2^x,[/tex]
then
[tex]a=14,\\ \\b=2[/tex]
The initial amount is the value of the function at x=0:
[tex]g(0)=14\cdot 2^0=14\cdot 1=14[/tex]
The growth factor is b=2
2. When the function has equation
[tex]f(t)=1.4^t,[/tex]
then
[tex]a=1,\\ \\b=1.4[/tex]
The initial amount is the value of the function at t=0:
[tex]f(0)=1.4^0=1[/tex]
The growth factor is b=1.4