Ask question

Ask question

All categories

2 years ago

9

The area of a rectangular wall of a barn is 140 square feet. Its length is 6 feet longer than twice its width. Find the length a

nd width of the wall of the barn.

1 answer:

Lubov Fominskaja [6]2 years ago

3 0

Do you need to graph it?

You might be interested in

Three times a number, subtracted from 20, is equal to -7

tia_tia [17]

The answer is 20-3x=-7 explanation

4 0

2 years ago

Using Cramer's Rule, what are the values of x and y in the solutio

olya-2409 [2.1K]

Answer:

x = -3, y = 1

Step-by-step explanation:

To find the value of x and y, find the determinant of original matrix, which would be 21.

Then, substitute the value of x with the solutions to the equations and find the determinant of that matrix, which is -63.

Cramer's rule says that Dx ÷ D is the value of x. So, -63 ÷ 21 = -3.

So, the x-value is -3.

You can find the determinant of the y-value in the same way, and you'll find out that y = 1.

Hope this helped! :)

8 0

2 years ago

CB = 4, CA = 11 , and CE = 8 , what is the length of overline ET ?

erma4kov [3.2K]

AB=11-4=7

$\\ \rm\hookrightarrow \dfrac{BC}{AB}=\dfrac{CE}{ET}$

ET be x

$\\ \rm\hookrightarrow \dfrac{4}{7}=\dfrac{8}{x}$

$\\ \rm\hookrightarrow 4x=56$

$\\ \rm\hookrightarrow ET=x=14$

8 0

2 years ago

a seed company has a test plot in which it is testing the germination of a hybrid seed, They plant 50 rows of 40 seeds per row.

ziro4ka [17]

Answer:

Mean = $\sum x P(x) = 36.86$

Standard deviation = $\sum x^2P(X)=1360.9$

Step-by-step explanation:

x P(x) $x \times P(x)$ $x^2 \times P(x)$

33 0.02 0.66 21.78

34 0.06 2.04 69.36

35 0.1 3.5 122.5

36 0.2 7.2 259.2

37 0.24 8.88 328.56

38 0.26 9.88 375.44

39 0.1 3.9 152.1

40 0.02 0.8 32

1 36.86 1360.9

We are supposed to find mean and standard deviation

Mean = $\sum x P(x) = 36.86$

Standard deviation = $\sum x^2P(X)=1360.9$

7 0

2 years ago

Which best describes the structure outlined in the bridge.

Arisa [49]

Answer:D

Step-by-step explanation:

6 0

2 years ago