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2 years ago

14

What three dimensions are needed to find the volume of a rectangular solid?

1 answer:

Katyanochek1 [597]2 years ago

7 0

We need the length, the width and the height

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Eric took a test with 15 questions. he answered 2/5 of the questions correctly, how many did he get wrong?

givi [52]

Answer: 9

3/5's of 15 = 9

7 0

2 years ago

DUE BEFORE 5:OO!!!!!!

AleksAgata [21]

X + y = 6
x - 6y = -9

Subtract the equations, you get:

y - (-6y) = 6 - (-9)
7y = 15

y = 15/7

x + 15/7 = 6
x + 15/7 = 42/7
x = (42-15)/7
x = 27/15

None of your answer choices are correct, since the solution to the systems of equation is (27/15, 15/7)

6 0

2 years ago

Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq

TiliK225 [7]

Answer:

The perimeter of rectangle is $18\ cm$

Step-by-step explanation:

Let

x-----> the length of the rectangle

y----> the width of the rectangle

we know that

$x=y+5$ ----> equation A

$120=xy+2x^{2}+2y^{2}$ ---> equation B (area of the constructed figure)

substitute the equation A in equation B

$120=(y+5)y+2(y+5)^{2}+2y^{2}$

$120=(y+5)y+2(y+5)^{2}+2y^{2}\\ 120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\ 120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\120=5y^{2}+25y+50\\5y^{2}+25y-70=0$

using a graphing calculator -----> solve the quadratic equation

The solution is

$y=2\ cm$

Find the value of x

$x=y+5 ----> x=2+5=7\ cm$

Find the perimeter of rectangle

$P=2(x+y)=2(7+2)=18\ cm$

4 0

2 years ago

Read 2 more answers

One number is 9 times a first number. a third number is 100 more than the first number. if the sum of the three numbers is 727,

Zielflug [23.3K]

First number: 57
Second number: 513
Third number: 157

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2 years ago

A scale on a blue print drawing of a house shows that 66 centimeters represents 33 meters. What number of centimeters on the blu

aksik [14]

To find the ratio of centimeters to meters you need to divide 66 by 33 to get 2.
Then multiply 2727 by 2 to get 5454.

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2 years ago