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2 years ago

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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?

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Terry and Bob each have an aquarium. Terry’s aquarium is 14 cm long, 12 cm high, and 10 cm wide. Bob’s aquarium is 13 cm long, 1

MArishka [77]

Find the volume of each tank by multiplying the length by the width by the height:

Terry: 14 x 12 x 10 = 1680 cubic cm.

Bob: 13 x 15 x 8 = 1560 cubic cm

Terry’s aquarium is larger and can hold more water.

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=%7B3%7D%5E%7B5%7D%20%20%5Ctimes%20%20%7B3%7D%5E%7B7%7D%20%20%5Ctimes%20%20%7B3%7D%5E%7Bx%7D%20

Irina-Kira [14]

Answer:

The answer is x= -10

3 0

3 years ago

Simplify f(x)=(x+1)(x-3) to standard form

Ivahew [28]

Answer:

x^2-2x-3

Explanation: Use FOIL

4 0

3 years ago

What is the mass of 75¢ in nickels?

Dima020 [189]

According to the United States Mint, the mass of 1 nickel is 5.000 g.

$\dfrac{\$0.75}{\$0.05} = 15$

There are 15 nickles in 75 cents worth of nickels.

15 * 5.000 g = 75.000 g

Answer: 75.000 grams

6 0

3 years ago

Find the value of sin(a/2) if cosa= 12/13<br>

daser333 [38]

Answer: sin $\frac{a}{2}$ = ± $\frac{1}{\sqrt{26} }$

Step-by-step explanation:

We very well know that,

cos2A=1−2sin²A

⟹ sinA = ± $\sqrt{(1-} \frac{cos2A}{2} )$

As required, set A = $\frac{a}{2}$ & cos a= $\frac{12}{13}$ ,thus we get

sin $\frac{a}{2}$ =± $\sqrt{\frac{1-cos a}{2} }$

∴ sin $\frac{a}{2}$ =± $\sqrt{\frac{1-\frac{12}{13} }{2} }$ = ± $\frac{1}{\sqrt{26} }$

since ,360° < $\frac{a}{2}$ <450°

,180° < $\frac{a}{2}$ <225°

Now, we are to select the value with the correct sign. It's is obvious from the above constraints that the angle a/2 lies in the III-quadrant where 'sine' has negative value, thus the required value is negative.

hope it helped!

5 0

3 years ago