3 years ago

I need some help with this question

Mathematics

1 answer:

VashaNatasha [74]3 years ago

7 0

Answer:

(7w + 9x)(7w - 9x)

Step-by-step explanation:

Given expression;

49w² - 81x²

Now to solve the problem;

49w² - 81x² = 7²w² - 9²x²

Using differences of two squares;

x² - y² = (x + y)(x - y)

So;

7²w² - 9²x² = (7w + 9x)(7w - 9x)

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A sum of $9, 000 paid into a bank account for two months (61 days) to attract simple interest will produce $9, 020 at the and of

Juliette [100K]

Answer:

Rate of interest will be 1.33 %

Return on this investment = $=\frac{9020-9000}{9000}=0.222$ %

Step-by-step explanation:

We have given principle amount P = $9000

Time = 61 days = $\frac{61}{365}=0.167\ years$

We have to find the rate of interest

Total amount produce at the end of term = $9020

So interest = $9020 - $9000 = $20

We know that simple interest $=\frac{principle\ amount\times rate\times\ time}{100}$

$20=\frac{9000\times rate\times\\ 0.167}{100}$

$rate=1.33$ %

Return on this investment = $=\frac{9020-9000}{9000}=0.222$ %

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4 years ago

Lainey bought a set of 20 markers for $6 dollar sign,<br> What is the cost of 1 marker?

Semenov [28]

Answer:.3

Step-by-step explanation: 20/6 =.1

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4 years ago

HELP PLEASE 12 POINTS

zepelin [54]

Your answer would be 44602.24 that’s the answer

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3 years ago

What is 24 144 in simplest form

photoshop1234 [79]

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4 years ago

Draw 3 points that are noncoplanar.

aalyn [17]

Answer:

Coplanar is when all 3 points are on the same plane

Noncoplanar is when they are not

For ex:

Coplanar->

.x, .z, and .s are all on the plane R

Noncoplanar->

.x, and .z are on plane R

.s is on plane Y

3 0

4 years ago

I need some help with this question​

I need some help with this question