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3 years ago

HELP!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

maxonik [38]3 years ago

7 0

Answer:

Concept: Area

Area= (3.14)r^2
Hence 3.14 * 7^2
3.14* 49 =153.86
Divide by 4 for the qualifications
153.86/4= 38.47

Rudik [331]3 years ago

3 0

38.47 is your answer. Remember pi is 3.14 so you the formula

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Find the value of X

vredina [299]

Answer:

x=8

RPS = 36

Step-by-step explanation:

QPS = 180

The two angles that form QPS

QPR + RPS = 180

7x+88 + 3x+12 = 180

Combine like terms

10x+100 =180

Subtract 100 from each side

10x = 180-100

10x = 80

Divide by 10

x =80/10

x = 8

RPS = 3x+12

= 3(8)+12

24+12

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3 years ago

Find the value of x.

Jobisdone [24]

X=180-125-39=16 degrees

6 0

2 years ago

Solve the inequality. Show your work. |r + 3| ≥ 7

poizon [28]

R could equal any number, but it has to be higher than 4, because 3+4=7.

7 0

3 years ago

Why can you NOT combine 3x and 5x^2 ?

diamong [38]

Although they are the same variable, you cannot add two variables raised to different powers. 3x^1 + 5x^2 cannot work, but 3x^2 + 5x^2 can. Also, if you are multiplying them, they would combine to be 15x^3, as 3 and 5 (The coefficients) multiply together and x^2 times x^1 = x^3.

I hope that helps.

7 0

3 years ago

Which expressions are equivalent?

trapecia [35]

Only 3(a−b) and 3a−3b are equivalent

Further explanation:

We have to evaluate each expression to evaluate if the expressions are equivalent or not.

So,

$3(a-b)\\Distributing\ 3\ in\ bracket\\3.a-3.b\\=3a-3b$

As we can see that 3(a-b) results in 3a-3b so these are equivalent

$2a(2+b)\\Distributing\ 2a\\2a.2+2a.b\\=4a+2ab$

As we can see that 2a(2+b) doesn't result in 4ab so these are not equivalent

Hence,

Only 3(a−b) and 3a−3b are equivalent

Keywords: Equivalent expression, Polynomials

Learn more about polynomials at:

#LearnwithBrainly

3 0

3 years ago