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Elden [556K]
4 years ago
8

Evaluate the function at the fiven values of the variables:

Mathematics
1 answer:
Arlecino [84]4 years ago
4 0

Answer:

f(-3)=5x^2+5x*3

-f*3=5x^2+5*3x

-3f=5x^2+15x

f=-5x(x+3)/3

f(-9)=5x^2+5x*3

-f*9=5x^2+5*3x

-9f=5x^2+15x

f=-5x(x+3)/9

Step-by-step explanation:

hope it helps you?

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you have some $5 dollar bills and $10 dollar bills in your wallet. You have a total of 12 bills that are worth $95 how many of e
Marina CMI [18]
Let
x = # of <span>$5 dollar bills
y = </span># of  <span>$10 dollar bills

x + y = 12 so x = 12 - y
5x + 10y = 95

substitute </span>x = 12 - y into 5x + 10y = 95

5x + 10y = 95
5(12 - y) + 10y = 95
60 - 5y + 10y = 95
5y = 35
y = 7

x = 12 - 7 = 5

answer
# of <span>$5 dollar bills = 5
</span># of $10 dollar bills = 7
8 0
3 years ago
Read 2 more answers
The United States won 63 gold medals at the Olympics. 12 of those were in swimming. Write an equation to express how many medals
sp2606 [1]

Let's assume

number of gold medals were won in sports other than swimming =x

we are given

total number of gold medals =63

number of gold medals in swimming =12

so,

total number of gold medals =number of gold medals in swimming+number of gold medals were won in sports other than swimming

so, we will get equation as

63=12+x

now, we can solve for x

63-12=12+x-12

x=63-12

so, equation is

x=63-12............Answer

8 0
3 years ago
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What is the greatest common factor of 42a5b3, 35a3b4, and 42ab4? 7ab3   6a4b 42a5b4 77a8b7
lbvjy [14]

The <em><u>correct answer</u></em> is:

7ab³

Explanation:

The greatest common factor is the largest thing that each term is divisible by.

The coefficients of our terms are 42, 35 and 42.  Using the prime factorization for each,

42 = 6*7

6 = 2*3

42 = 2*3*7

35 = 5*7

The greatest common factor is 7.

For the variables, each term has at least a¹ and at least b³.  This means that ab³ is part of the GCF; this gives us a GCF of 7ab³.

3 0
3 years ago
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The formula for the circumference, C, of a circle with given radius, r, is C = 2nr.
LekaFEV [45]

Answer:

C. 22

Step-by-step explanation:

C = circumference

n (pi) = 22/7

r = 3 1 /2

Plug in the numbers for each variable.

C = 2x (22/7) x (3 1/2)

Change the mixed number inIto an improper fraction by multiplying 3 x 2 and adding the 1 which gives us 7 over 2 because 2 is our denominator  so, 3 1/2 = 7/2. It also helps to have 1 as the denominator for 2.

C = (2/1) x (22/7) x (7/2)

Lastly, just multiply the numerators across which give us 308 then multiply the denominators across which gives us 14, so then we divide 308 by 14 and get 22.

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3 years ago
In the triangle below, x= degree. Round to the nearest tenth
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Answer:

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