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Makovka662 [10]
4 years ago
7

The expression πr² is used to determine the area of a circle, where r is the length of the radius. What does the expression π(5b

)² represent?
a) the area of a circle with radius 5

b) the area of a circle with radius 25

c) the area of a circle with radius 5b

d) the area of a circle with radius 25b²
Mathematics
1 answer:
Monica [59]4 years ago
8 0
The answer is c because all you are doing here is subbing the variable r for 5b.
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Which expression uses the greatest common factor and the distributive property to rewrite the sum 7 + 75
Lady_Fox [76]

Answer:

75 + 45 = 15(3 + 5)

Step-by-step explanation:

Given

75 + 45 <em>-- Corrected</em>

Required

Use the GCF to write it as a distributive property

First, we find the GCF of 75 and 45

45 = 3 * 3 * 5

75 = 3 * 5 * 5

The common factor is:

GCF = 3 * 5

GCF = 15

So, 75 + 45 becomes

75 + 45 = 15 * 3 + 15 * 5

Factorize

75 + 45 = 15(3 + 5)

<em>Hence, the sum has been rewritten as </em>15(3 + 5)<em></em>

5 0
3 years ago
Which graph shows the solution to the inequality -3X-/ &lt;20?
konstantin123 [22]

Answer:

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6 0
3 years ago
Kate sold 12 of her paintings and purchased 7 more. if kate has 21 paintings now, how many paintings did she have to begin with?
kicyunya [14]
First, let x or any variable represent the number of paintings Kate initially has. After selling 12 of it, her paintings now becomes only x - 12. Then, she purchased 7 more making the number of her paintings become x - 12 + 7 = x - 5. This number tantamount to 21. 

                                           x - 5 = 21      ; x = 26

Thus, Kate initially had 26 paintings. 
7 0
3 years ago
PLEASE HURRY.
hichkok12 [17]

Answer:

i think B.

Step-by-step explanation:

Hope this helps :p

6 0
3 years ago
Write as a product: ax^2+ay^2–bx^2–by^2+b–a
Vesna [10]

Answer:

\large\boxed{ax^2+ay^2-bx^2-by^2+b-a=(a-b)(x^2+y^2-1)}

Step-by-step explanation:

ax^2+ay^2-bx^2-by^2+b-a\\\\=(ax^2-bx^2)+(ay^2-by^2)+(b-a)\qquad\text{use the distributive property}\\\\=x^2(a-b)+y^2(a-b)-1(a-b)\\\\=(a-b)(x^2+y^2-1)

4 0
3 years ago
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