Answer:
7(2x+3y+z)
Step-by-step explanation:
A cell phone is on sale for 30% off. If the sale price is $239.89, what is the original price?
Answer:
$342.7
Step-by-step explanation:
Let the sale price be x.
So,
x - 30% of x = $239.89
x - 30/100*x = 239.89
(100x-30x)/100 = 239.89
70x = 239.89 *100
x = 23989/70
x = $342.7
sale price = $342.7
Answer:
342.70
Step-by-step explanation:
Since 100%-30%=70% our equation will be:
0.70x=239.89
x=original price
0.70x=239.89
/0.70 /0.70
Divide both sides by 0.70
x=342.7
$342.70
Activity
Serena is hitting golf balls at the driving range. When she hit a ball viith her 9-Iron, it stopped x yards in front of the 100-yard marker. She knows
she can hit a ball twice that far if she uses her driver. Complete the steps below to see how far Serena can hit a golf ball with her driver. Write an expression in terms of x that represents the distance Serena hit the gofl using her 9 - iron.
Final answer:
To find the distance Serena can hit a golf ball with her driver, we can multiply the distance with her 9-iron by 2.
Explanation:
To find the expression that represents the distance Serena hit the golf ball with her 9-iron, we know that the ball stopped x yards in front of the 100-yard marker. So, the distance Serena hit the ball with her 9-iron is 100 - x yards. To find how far Serena can hit a golf ball with her driver, which is twice as far as her 9-iron, we can multiply the distance with her 9-iron by 2. Therefore, the expression that represents the distance Serena can hit the golf ball with her driver is 2(100 - x) yards.
What does 55 represent y=55x+20
it is the slope its not that hard to figure out
Lawrence father gave him 200 baseball card declines purchases 25 baseball cards to add to his collection of weeks after starting his collection when Lawrence will have more than 750 baseball cards in his collection
Answer:
The inequality is [tex]25w+200> 750.[/tex]
Step-by-step explanation:
The question is incomplete so the complete question is attached below:
Now, to write an inequality that can be used to find [tex]w[/tex], the number of weeks after starting his collection when Lawrence will have more than 750 baseball cards in his collection.
Let the number of weeks be [tex]w.[/tex]
Number of cards Lawrence purchases each week = 25.
Number of cards Lawrence's father gave him = 200.
Total number of cards Lawrence will have more than in his collection = 750.
Now, to write an inequality that can be used to get the number of weeks after starting his collection when Lawrence will have more than 750 baseball cards in his collection:
[tex]25\times w+200>750[/tex]
[tex]25w+200> 750.[/tex]
Therefore, the inequality is [tex]25w+200> 750.[/tex]
Nabi has 112 inches of border for the board. She uses 8 feet of the border. How much of the border is left?
A. 16 inches
B. 32 inches
C. 40 inches
D. 36 inches
Answer:
A
Step-by-step explanation:
the explanation is in the picture
Please like,rate and mark as brainliest
24 students of the 30 in Anderson’s class are wearing tennis shoes .He says that. 70% are wearing tennis shoes is he correct explain help me
Answer:
He is not correct
Step-by-step explanation:
70%=70/100= 0.7
70% of 30 =0.7x 30= 21 not 24
Solve for "a" in this radical equation.
45 points!!
Please show all work
Answer:
a = -1 and a = 4
Step-by-step explanation:
∛a³ + 4a² -3 = a + 1
a³ + 4a² - 3 = (a + 1)³
a³ + 4a² -3 = a³ + 3a² + 3a + 1
a² - 3a -4
(a + 1) (a - 4)
a + 1 = 0
a = -1
a -4 = 0
a = 4
Answer:
a = -1, a=4
Step-by-step explanation:
( a^3 +4a^2 -3) ^1/3 = a+1
We need to cube each side to get rid of the radical
( a^3 +4a^2 -3) ^1/3 ^3 = (a+1)^3
( a^3 +4a^2 -3) = (a+1)^3
Using the formula (x+y)^3=x^3+3x^2y+3xy^2+y^3
we can expand (a+1)^3 to a^3+3a^2+3a+1
( a^3 +4a^2 -3) =a^3+3a^2+3a+1
Moving all the terms to the left hand side
( a^3 +4a^2 -3) -(a^3+3a^2+3a+1) =a^3+3a^2+3a+1-(a^3+3a^2+3a+1)
Distribute the minus sign
( a^3 +4a^2 -3) -a^3-3a^2-3a-1 =0
Combine like terms
a^2 -3a-4 =0
Factor
(a-4) (a+1) =0
Using the zero product property
a-4 =0 a+1=0
a=4 a=-1
Check since we cubed each side for extraneous solutions
( a^3 +4a^2 -3) ^1/3 = a+1
a=4
( 4^3 +4 *4^2 -3) ^1/3 = 4+1
(64 +64 -3) ^1/3 =5
125 ^1/3 =5
5=5 True
a=-1
( (-1)^3 +4 *(-1)^2 -3) ^1/3 = -1+1
(-1 +4 -3) ^1/3 =0
0 ^1/3 =0
0=0 True
Need help please don’t be fake
We see that Angle C = 99.
Then we see that Angle A + 22 + Angle C = 180
Substitute in the 99
Angle A + 22 + 99 = 180
Angle A = 59
In what quadrant would the image of point A (2,-1) be located if it is rotated 135° clockwise around point (1, -3)? Enter the numeric
value of the quadrant
Answer:
[tex]A' = (1.707,-5.121)[/tex]
The new point belongs to the fourth quadrant.
Step-by-step explanation:
The relative vector is:
[tex]\vec r = (2-1,-1+3)[/tex]
[tex]\vec r = (1, 2)[/tex]
The length of the vector is:
[tex]\|\vec r\| = \sqrt{1^{2}+2^{2}}[/tex]
[tex]\|\vec r\| = \sqrt{5}[/tex]
The angle with respect to the horizontal (+x direction) is:
[tex]\theta = \tan^{-1} \frac{2}{1}[/tex]
[tex]\theta \approx 63.435^{\textdegree}[/tex]
The new angle with respect to the horizontal (+x direction) is:
[tex]\theta' = 63.435^{\textdegree}-135^{\textdegree}[/tex]
[tex]\theta' = -71.565^{\textdegree}[/tex]
The new point is:
[tex]A' = (1 + \sqrt{5}\cdot \cos (-71.565^{\textdegree}),-3 + \sqrt{5}\cdot \sin(-71.565^{\textdegree}))[/tex]
[tex]A' = (1.707,-5.121)[/tex]
The new point belongs to the fourth quadrant.
Answer:
The new point A location is (1.69, -51267)
The quadrant is 4th quadrant
Step-by-step explanation:
Here we have a point rotating about another point, therefore we have;
Let point (1, -3) be = P
Therefore the length of line AP is given by the following relation;
[tex]AP =\sqrt{(2-1)^2+(-1-(-3))^2} = \sqrt{5}[/tex]
With angle
[tex]Actan (\frac{-1 -(-3)}{2-1}) = Actan( 2) = 63^{\circ} \ due \ North \ of \ East[/tex]
Rotating through 135° clockwise gives;
63° - 135° = 72° Due south of east from P
The coordinates is then given as follows;
y coordinates = -3 - sin 72×√5 = -5.1267
The x coordinates will be 1 + cos 72×√5 = 1.69
The coordinate of the new point A location = (1.69, -51267)
Therefore the quadrant remains the 4th quadrant.
Use the given conditions to write an equation for the line in point-slope form and in slope-intercept form.
Passing through (7,1) with x-intercept -5
Write an equation for the line in point-slope form...
WILL GIVE BRAINLIEST!!!
Answer:
[tex]y-1=\frac{1}{12} (x-7)[/tex]
Step-by-step explanation:
Point-slope form is: [tex]y-y_1=m(x-x_1)[/tex] , where (x_1, y_1) is the point given and m is the slope.
The problem gives us two points, actually: (7, 1) and (-5, 0); the second one is the x-intercept because x-intercepts always have a y-coordinates of 0. We can use these two points to find the slope, which is just change in y over change in x: [tex]\frac{1-0}{7-(-5)}=\frac{1}{12}[/tex]. So, the slope = m = 1/12.
Now, we have our point (7, 1) and the slope 1/12, so just plug these into the above format: [tex]y-1=\frac{1}{12} (x-7)[/tex]
Hope this helps!
Answer:
y - 1 = (1/12)(x - 7)
y = (1/12)(x + 5)
You can use either of these
Step-by-step explanation:
Slope using (-5,0) and (7,1)
m = (0-1)/(-5-7) = -1/-12
m = 1/12
y - 1 = (1/12)(x - 7)
Or,
y - 0 = (1/12)(x - -5)
y = (1/12)(x + 5)
A rectangle has an area of 228 ft squared and a length that measures 12 ft. Find the perimeter of the rectangle
Answer:
62 feet
Step-by-step explanation:
Hi there,
Let's start the problem by figuing out the width of the rectangle.
let w = the width of the rectangle.
The formula for the area of a rectangle is A = l*w, so let's plug in what we know.
228 = 12w
Now, let's solve for w, the width, by dividing both sides by 12
w = 19; The width is 19 feet.
Now, we have our length, 12 feet, and our width 19 feet.
So, we should now use the formula for perimiter to find the perimiter of this rectangle. The formula is P = W + W + L + L
Let's plug in the numbers
P = 12 + 12 + 19 + 19
P = 62 feet
Hope this helps! Stay safe!
- Emily
Daniel deposited $5,000 in his saving account. He left the money in the account
for 25 years and earned 3.5% simple interest. How much interest did her earn?
Answer:
$4375
Step-by-step explanation:
What you do first is multiple $5,000 by 3.5% to get $175 after that you would then multiple $175 by 25 for each year you are getting $175 when you do all that you get $4375 in interest
2x+3≥7 OR 2x+9>11 I'm confused n what to do help, please!!
Answer:
x>1
Step-by-step explanation:
2x+3≥7 OR 2x+9>11
Solve each one separately
2x+3≥7
Subtract 3 from each side
2x+3-3≥7-3
2x ≥ 4
Divide each side by 2
2x/2≥ 4/2
x≥ 2
2x+9>11
Subtract 9 from each side
2x+9-9>11-9
2x > 2
Divide by 2
2x/2>2/2
x>1
Put them back together
x>1 or x≥ 2
Since the x>1 is less restrictive and we are using or, we use that as our answer
On a pentagonal lot, when interior angles are put in increasing order, each differs from the next by 5 degrees. Find the measure of the smallest interior angle of the field
Select the appropriate response:
A) 118
B) 98
C) 103
D) 108
Answer:
B) 98
Step-by-step explanation:
98+5=103
103+5=108
108+5=113
113+5=118
ANSWER FAST PLZ !!!!!!!!!!!!!!!!!!!!!!!!1
Answer:
more likely
Step-by-step explanation:
the probability of 0.05 suggests there is a chance of that event happening. A probability of 0 says that such event would never happen. so despite being small the 0.05 chance is higher than the probability of 0
Answer:
More likely
Step-by-step explanation:
.05 > 0 that means no matter how small it's still going to be more likely if bigger than zero
find 3 irrational number 5/7 between 9/11
Step-by-step explanation:
5/7 < 9/11
Square both to get
(25/49) < (81/121)
----------------------
Least common multiple of the fraction denominators is 81*121 because they
share no factors.
---------------------
Rewrite the fractions as
((25*121)/(49/121)) < (81*49)/(81*49))
Simplify to get:
3025/5929 < 3969/5929
-------------
pick some numbers between 3025 and 3969
like 3127, 3255, 3659
------------------------
Form the fractions: 3127/5929, 3255/5929, 3659/5929
----------------------
Take the square root of each:
sqrt[3127/5929], sqrt[3255/5929], sqrt[3659/5929]
------------------------
Each of these will be irrational numbers between 5/7 and 9/11
Answer:
Step-by-step explanation:
hello :
5/7 ≅ 0.71 9/11≅0.82
3 irrational number 5/7 between 9/11 are :
72/100 , 73/100 , 74/100
How many liters are in 1 dekaliter? Use the metric table to help answer the question.
Metric Table
unit
kilo-
1,000
hecto-
100
deka
10
deci-
0.1
centi-
0.01
milli-
0.001
O
1 liter
10 liters
100 liters
1,000 liters
O
Answer:
10
Step-by-step explanation:
Based on the concept of measurement and the information given in the question, the liters that made 1 dekaliter is 10 liters.
What is measurement?Measurement is a term that is used to describe the process of associating numbers with physical quantities and phenomena.
Generally, the process of measurement includes the unit conversion, thereby making the same property as a different unit of measurement. For instance, liters can be expressed in dekaliters.
In this case, 10 liters is equivalent to 1 dekaliter
Other types of liters are the following:Milliliters DecilitersCentilitersLitersKilolitersHectolitersHence, in this case, it is concluded he correct answer is option B. 10 liters.
Learn more about Conversion in Measurement here: https://brainly.com/question/174910
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What is slope of the line -3y=8x -5?
The slope of the line given by the equation -3y=8x-5 is -8/3. This is obtained by re-arranging the equation into slope-intercept form (y=mx+b), where 'm' is the slope.
Explanation:The equation given is -3y=8x-5. To find the slope of the line, we first need to convert this equation to the form y=mx+b, which is the slope-intercept form of a line. In this form, the coefficient 'm' represents the slope, and 'b' represents the y-intercept.
First, divide all terms by -3 to transform the equation. Doing so gives us y=-8/3x + 5/3. Thus, the slope of the line is -8/3. This means that for every increase of 1 unit on the x (horizontal) axis, y (on the vertical axis) will decrease by 8/3 units.
Different lines can have different slopes. A slope can be positive, negative, zero, or undefined. In this case, because our slope is -8/3, we have a line that slopes downwards when reading from left to right.
Learn more about slope of the line here:https://brainly.com/question/32470033
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The government of a large city needs to determine whether theâ city's residents will support the building of a new Middle School. The government decides to conduct a survey of a sample of theâ city's residents. Which one of the following procedures would be the most appropriate for obtaining a sample of theâ city's residents?a. Survey a random sample of the employees and inmates at the old jail. b. Survey every fifth person who walks into City Hall on a given day. c. Survey a random sample of persons within each geographic region of the city. d. Survey the first 200 people listed in the cityâs telephone directory.
Answer:
c. Survey a random sample of persons within each geographic region of the city.
Step-by-step explanation:
Since the government intends to conduct the survey on a sample of the city residents. The sample must be random and a true representation of those who live in the city. It is therefore important that the survey is carried out on a random sample of persons within each geographic region of the city.
All other options are not true representation of the city's population.
The most appropriate procedure for obtaining a sample of a city's residents that will support the new Middle School is to survey a random sample of persons within each geographic region of the city.
The government of a large city needs to determine whether the city's residents will support the building of a new Middle School. When deciding on the most appropriate procedure for obtaining a sample of the city's residents, the goal is to ensure that the sample is both random and representative of the entire population. Out of the given options:
Survey a random sample of the employees and inmates at the old jail would not be representative of the entire city.
Survey every fifth person who walks into City Hall on a given day could have selection bias and might not be a random sample.
Survey a random sample of persons within each geographic region of the city would likely be the most appropriate method, as it ensures that all areas of the city are represented.
Survey the first 200 people listed in the city’s telephone directory could result in a sample that is not random, as it excludes those not listed in the directory or those with unlisted numbers.
Therefore, the best option among those presented is to survey a random sample of persons within each geographic region of the city. This would provide a more accurate reflection of the city's residents' opinions regarding the new Middle School.
What are two things you will need to write an equation for a line?
Answer:
Slope and y intercept.
Step-by-step explanation:
This is necassary to write the equation of a line in y=mx+b
m is where the slope goes, and b is the y intercept.
Alternatively, you could also write the equation for a line with a point on the line and the slope.
You would then write it in point slope formula:
y-y1=m(x-x1)
This can later be converted into slope intercept form.
WILL GIVE BRAINLIEST!
What is the value of x to the nearest tenth?
Answer:
C
Step-by-step explanation:
Use Law of Sines.
Find third angle, which is 26 degrees.
x/sin28=8.2/sin26
cross multiply, which becomes
xsin26=8.2sin28
then divide sin26 both sides
x=8.78
51) Eloise had to solve a system of inequalities that contained an exponential growth function and a linear function with positive slope. She KNOWS that the two equations intersect at least once, and she was asked to state the interval where the linear > exponential. Which could be an answer to her system of inequalities? A) (-1, 3) B) (-1, [infinity]) C) (-[infinity], -1) D) (-[infinity], -1) ∪ (3, [infinity])
Answer:
Answer is A. (-1, 3)
Refer below.
Step-by-step explanation:
If the line and exponential function intersect only once then the line is tangent to the exponential at that point and therefore is always is below the exponential except at the point of intersection where there are equal.
I need help asap :):):)
Answer:
24 ÷ 4
Step-by-step explanation:
Putting something into fourths is putting into 4 parts. If you divide 24 by 4 you get 6. 6 equals 1/4 of 24. To check your work add 6 together 4 times.
Equivalent to -9y+2x
Answer:
(-3 x 3y) + 2x
Step-by-step explanation:
Urn A contains 1 red ball and 4 blue balls. urn B has 2 red balls and 3 blue balls. in each round you choose at random one ball from urn A and one from urn B. the process is then repeated until the first time you draw two balls of the same color. What is the probability that this process ends on the fourth round?
Answer: The probability is 0.06
Step-by-step explanation:
Urn A contains 1 red ball and 4 blue balls.
Urn B contains 2 red balls and 3 blue balls.
The probability of "selecting" a ball of a given colour is equal to the number of balls of that colour in the urn divided by the total number of balls in the urn.
Now, the probability of drawing two balls of the same color in the fourth selection needs to:
1 selection: red ball from A and one blue ball from B, the probability is:
Pa = 1/5, Pb = 3/5, P = 1/5*3/5 = 3/25
second selection: a blue ball from A and one red ball from B, the probability is (remember that now we have one ball less in each urn):
Pa = 4/4, Pb = 2/4, P = 1*2/4 = 1/2
for the third selection we have that we again need to take a blue ball from A and a red ball from B, here the probability is:
Pa = 3/3, Pb = 1/3, P = 1*1/3 = 1/3
the total probability will be the product of the 3 selections
Pt = (1/3)*(1/2)*(3/25) = 0.02
but we have 3 possible permutations of those selections, in one we took the red ball from A in the first selection, other were we took it in the second, and others where we took it in the third.
So the actual probability is 3*Pt = 3*0.02 = 0.06
There are 5 red pens, 4 black pens, and 1 blue pen in a box. What is the probability of pulling out a black pen two times in a row with replacement?
A. 8/10
B. 4/10
C. 16/100
D. 4/25
Answer:
D. 4/25
Step-by-step explanation:
To find probability, you multiply 4/10 by 4/10. You should get 16/100, which simplifies to 4/25.
Xzavion buys 1.2 pounds of strawberries. If each pound of strawberries cost $3.70, how much will he pay for the strawberries?
Answer:
$4.44
Step-by-step explanation:
$3.70 * 1.2 = $4.44
Answer:
$4.44
Step-by-step explanation:
what is (4x) to the 1/2 in radical form
Answer:[tex]2\sqrt{x}[/tex]
Step-by-step explanation:
4x^1/2=[tex]\sqrt[2]{4x}[/tex]=[tex]2\sqrt{x}[/tex]
Answer:
[tex]2\sqrt{x}[/tex]
Step-by-step explanation:
Fractional exponents always mean roots. The denominator indicates which root it is. Since the denominator here is 2, the root is a square, so:
[tex](4x)^{1/2}=\sqrt{4x} =2\sqrt{x}[/tex]
Thus, the answer is [tex]2\sqrt{x}[/tex].
Hope this helps!
How many distinct real number zeros does f have? F(x)=4x^2-17x+3
Answer:
2 distinct real number zeros
Step-by-step explanation:
The discriminant b^2 - 4ac
= (-17)^2 - 4*4*3
= 241
So it has 2 distinct roots.
Circle P has a circumference of approximately 75 inches.
What is the approximate length of the radius, ? Use 3.14 for
T. Round to the nearest inch.
va
12 inches
24 inches
38 inches
46 inches
Answer:
The answer to your question is 12 in
Step-by-step explanation:
Data
Circumference = 75 in
radius = ?
π = 3.14
Circumference is defined as the distance around the edge of a circle.
Formula
Circumference = 2 π radius
Solve for radius
Radius = Circumference / 2π
-Substitution
Radius = 75 / 2(3.14)
-Simplification
Radius = 75/6.28
-Result
Radius = 11.94 in ≈ 12 in
Answer:
1) 12in
Step-by-step explanation:
The circumference is 75, so to find the diameter you have to divide 75 by 3.14. You get 24 approximately. Then divide the diameter by 2, so 24/2=12.