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azamat
3 years ago
14

Please help me i'm confused

Mathematics
1 answer:
UNO [17]3 years ago
7 0
So this is area and perimeter. you have to add and subtract
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Todd and his brother robert are going to use 512 square feet of their backyard for skateboard ramps. the shape of the backyard i
Ahat [919]

The dimensions are 16  ft by 32 ft

The quadratic equation is w^2-256=0

We have given that,

Todd and his brother Robert are going to use 512 square feet of their backyard for skateboard ramps. the shape of the backyard is rectangular, with the length twice as long as the width.

<h3>What is the area of the rectangle?</h3>

The area of a rectangle is equal to

A=WL

Where L is the long side of the rectangle

W is the width side of the rectangle

in this problem we have

A=512ft^2

S0,512=LW -----> equation A

L=2W ------> equation B

substitute equation B in equation A

512=2W(W)

512=2w^2

2w^2-512=0

W^2=512/2

W=\sqrt(256)

W=16

Find the value of L

L=2W

L=2(16)

L=32ft

To learn more about rectangle visit:

brainly.com/question/25292087

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7 0
2 years ago
For thousand 400 is 10 times as much as 440
ss7ja [257]
440 x 10 = 4,400.  Yes 4,400 is 10 times as much as 440
3 0
3 years ago
Read 2 more answers
Solve the equation
Zina [86]

Answer: the equivalent equation is found by distributing the 1/4 to get 4+3x=28

the first step is subtract 4 to both sides

the second step is divide both sides by 3

the answer is x=8

Step-by-step explanation:

3 0
3 years ago
Frank’s quarter grades are 82.5, 94.7, and 87.9. What grade, rounded to the nearest percent, will Frank have to earn in the last
Thepotemich [5.8K]
The given final course grade, 88%, is the average of Frank's four quarter grades. The average is the sum of all grades divided among the four quarters. Let x be the average,
                                  (82.5 + 94.7 + 87.9 + x) / 4 = 88
The value of x is equal to 86.9. Thus, the answer is letter C. 87%.

4 0
3 years ago
What percent is 33 of 96?
Ivan

<span>1. We assume, that the number 96 is 100% - because it's the output value of the task. </span>
<span>2. We assume, that x is the value we are looking for. </span>
<span>3. If 96 is 100%, so we can write it down as 96=100%. </span>
<span>4. We know, that x is 33% of the output value, so we can write it down as x=33%. </span>
5. Now we have two simple equations:
1) 96=100%
2) x=33%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
<span>96/x=100%/33%</span>
6 0
3 years ago
Read 2 more answers
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