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Gemiola [76]
3 years ago
10

Math is not my thing! Can you help?

Mathematics
2 answers:
aksik [14]3 years ago
8 0

Answer:

12

Step-by-step explanation:

Equation: 5x + 9 - 4x

Plug in x = 3

New equation: 5(3) + 9 - 4(3)

Simplify: 15 + 9 - 12

Simplify: 12

<u>Answer: 12</u>

V125BC [204]3 years ago
6 0

Answer:

x+9

Step-by-step explanation:

5+9−4

1+9

x + 9

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Kylie bought 5 rolls of paper towels. She got 411.2 meters of paper towels in all. How many meters of paper towels were on each
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Answer:82.24 meters were on each roll

Step-by-step explanation: 411.2/5=82.24

3 0
2 years ago
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The equation x2+y2=14 represents a
Ann [662]

Answer:

r = √14

Step-by-step explanation:

Is this what you meant?  If so heres' the answer

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Let C(x) be the cost to produce x batches of​ widgets, and let R(x) be the revenue in thousands of dollars. R(x) = − x² + 6x​, C
Musya8 [376]

Answer:

Step-by-step explanation:

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R(x) = -x^2 + 6x,\\ C(x) = x + 4.

Profit function = Revenue  - cost

So we get profit function by subtracting C(x) from R(x) using algebraic method of subtraction.

Profit function of x

= Pr(x) = R(x) -C(x)\\= -x^2+6x-x-4\\=-x^2+5x-4

7 0
3 years ago
Math question please help me
Vinvika [58]

Answer:

C

Step-by-step explanation:

There are 140 women in the 5% sample. to find an estimate of all the women we can multiply but by 20. 5% x 20 = 100%. 140 x 20 = 2,800.

7 0
3 years ago
Find the net change in the value of the function between the given inputs. h(t) = t2 + 2; from −5 to 8
pashok25 [27]

Answer:

39

Step-by-step explanation:

Given the function :

h(t) = t² + 2

From t = 5 to t = 8

when, t = 5

h(5) = 5² + 2

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h(t) at t = 5 ; equals 27

when, t = 8

h(5) = 8² + 2

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h(t) at t = 8 ; equals 66

Net Change :

h(8). - h(5)

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3 0
3 years ago
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