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3 years ago

HELPP PLEASEEEEE!!!!!!

Mathematics

1 answer:

finlep [7]3 years ago

8 0

Answer:

The perimeter is 32.4 and the area is 1094.4

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What is the product of (4x-7)(4x+7)?

miskamm [114]

(a+b)(a-b)=a^2 - b^2
so

<span>(4x-7)(4x+7) = 16x^2 - 49

answer
</span>16x^2 - 49

6 0

3 years ago

What is the width of a rectangle with an area of 5/8 in. squared and a length of 10 inches?

Ad libitum [116K]

5/8=10×w this is my equation then i divide by 10 on both sides
w=6.25

6 0

3 years ago

Please help to find an explicit formula for calculating the sum Mn

defon

The explicit formula for calculating the sum is

$S_N=\frac{n(n-1)}{2} \cdot\frac{n(n+1)}{2}$

The sum of the nth term of a sequence is expressed as;

$S_n=\frac{n}{2}(2a+(n-1)d)$

a is the first term

d is the common difference

n is the number of terms

For the sequence 0 + 1 + 2 + 3 +...

$S_n=\frac{n}{2}(2(0)+(n-1)1)\\S_n= \frac{n}{2}(n-1)\\S_n= \frac{n(n-1)}{2}$

Similarly for the sequence:

1 + 2+ 3 + 4+...

$S_n=\frac{n}{2}(2(1)+(n-1)1)\\S_n= \frac{n}{2}(2+n-1)\\S_n= \frac{n(n+1)}{2}$

Taking the product of the sum to get the explicit formula for calculating the sum

$S_N=\frac{n(n-1)}{2} \cdot\frac{n(n+1)}{2}$

Learn more here: brainly.com/question/24547297

8 0

3 years ago

Becky has a board that is 2 and 3/4 feet long. She needs to cut the board into 11 pieces of equal length. How long should each p

zzz [600]

Answer:

1/4 feet long should each pieces be.

Step-by-step explanation:

Unit rate defined as the rates are expressed as a quantity of 1 such as 3 miles per second or 4 km per hour

As per the statement: Becky has a board that is 2 and 3/4 feet long.

⇒ Length of a board = $2\frac{3}{4} =\frac{11}{4}$ feet

Also, she need to cut the board into 11 pieces.

by unit rate definition:

$\text{Unit rate per pieces} = \frac{\frac{11}{4} }{11}$

$\text{Unit rate per pieces} = \frac{11}{4} \times \frac{1}{11} = \frac{1}{4}$

Therefore, 1/4 feet long should each pieces be.

4 0

3 years ago

Your friend evaluates ( 10-k ) divided by 5 . K stands for 5 and the friend gets 9 as the answer . Explain the error

Oliga [24]

Answer:

(10 - k) ÷ 5 = 9

(10 - 5) ÷ 5 = 9

5 ÷ 5 = 9

1 = 9

1 does not equal 9

Hope this helps! Please mark brainliest! Have a great day!

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8 0

3 years ago