2 years ago

This is urgent please help!

Mathematics

1 answer:

notka56 [123]2 years ago

3 0

Answer:

try the last one

Step-by-step explanation:

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the area of a rectangle is 28 ft squared, and the length of the rectangle is 5 ft less than 3 times the width. find the length a

forsale [732]

The length of the rectangle is 7 and the width is 4 and equation is this 3x4=12
12-5=7 and 7x4=28

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3 years ago

Find a4 for the arithmetic series with S4=-36 and a1=9

erastova [34]

ANSWER

The 4th term is -27

EXPLANATION

The sum of the first n-terms of an arithmetic sequence is

$S_n= \frac{n}{2} (2a_1+d(n-1))$

It was given that,

$S_4 = - 36$

$a_1 = 9$

$- 36= \frac{ 4}{2} (2 \times 9+d(4-1))$

$-36=2(18+3d)$

$-18=18+3d$

$-18 - 18 = 3d$

$3d = - 36$

$d = - 12$

The n-term is given by:

$a_n=a_1+ (n-1)d$

We substitute n=4 to get,

$a_4=9+ (4-1) \times -12$

$a_4=9+ 3\times -12$

$a_4=9 - 36$

$a_4= - 27$

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3 years ago

They want you to find b

Sergeu [11.5K]

Add any negative number that will make it less than three!

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2 years ago

What is one thing that authors include to support their points?

GarryVolchara [31]

A. Evidence. To support a point you would need something to back it up. That being evidence/facts.

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3 years ago

Given mZLMN<br> =<br> 140°, find mZLMP.

Stels [109]

Assuming that the mZLMP is adjacent to mZLMN the answer would be 40

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3 years ago