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3 years ago

The area of Mrs. Rush's rectangular room is 3x2+31x+36 . Find the length, width and perimeter.what is it?

Mathematics

1 answer:

Lynna [10]3 years ago

5 0

Answer:

The chosen topic is not meant for use with this type of problem. Try the examples below.

Step-by-step explanation:

 l=9

w=4

 l=5

w=5

 l=5

w=4

I think its right because I tried ok.

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Question 10<br> Complete<br> 6 m/s = ? km/h

nadezda [96]

Answer:

21.6 km/hr

Step-by-step explanation:

multply the speed value by 3.6

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3 years ago

Read 2 more answers

Write the base and power of each of the following exponent.<br>(-23/56)^6

gayaneshka [121]

Answer:

-191.10

Step-by-step explanation:

When you divide 56/23 you get 2.4, 2.4 is negative.

Multiply 2.4 6 times

2.4^6.

You get -191.10.

I am probably wrong but I tried.

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3 years ago

Can you see an easy way to work out the value of <img src="https://tex.z-dn.net/?f=%5Csqrt%7B%201%5E3%20%2B%202%5E3%20%2B%203%5E

Lina20 [59]

We have the sum of cubes identity

$a^3 + b^3 = (a + b) (a^2 - ab + b^2)$

and observing that 1 + 4 = 2 + 3, we have

$1^3 + 4^3 = (1 + 4) (1^2 - 4 + 4^2) = 5 \times 13$

and

$2^3 + 3^3 = (2 + 3) (2^2 - 6 + 3^2) = 5 \times 7$

Then

$\sqrt{1^3+2^3+3^3+4^3+5^3} = \sqrt{5\times13 + 5\times7 + 5\times5^2} = \sqrt{5 \times (20 + 25)} \\\\ ~~~~~~~~ = \sqrt{5^2 \times (4 + 5)} = \sqrt{5^2\times9} = \sqrt{5^2\times3^2} = 5\times3 = \boxed{15}$

Alternatively, we have the well-known sum of cubes formula

$\displaystyle \sum_{i=1}^n i^3 = \frac{n^2(n+1)^2}4$

The sum under the square root is this sum with $n=5$ . Then

$1^3+2^3+3^3+4^3+5^3 = \dfrac{5^2\times6^2}4 = 225 = 15^2$

and so the square root again reduces to 15.

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2 years ago

The ratio of length :width :height of a box is 6 : 3 : 2. What is the volume if the height is 5 centimetres.

Dovator [93]

Answer:

90cm cube

Step-by-step explanation:

V= lbh

V= 6×3×5

V= 90cm cube

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3 years ago

Mariana knit a total of 20 centimeters of scarf over 2 nights. After 5 nights of knitting, how many centimeters of scarf will Ma

Tema [17]

Answer:50

Step-by-step explanation:

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3 years ago