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Tcecarenko [31]
2 years ago
11

What is the system solution to 8x + 7y = 39

Mathematics
1 answer:
ludmilkaskok [199]2 years ago
8 0

Answer:

-8/7

Step-by-step explanation:

I thinks this is the answer

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How do you do 124.2 divided by 23
n200080 [17]
It's 5.4- I just used the calculator on my phone but I would've just done long division if I didn't have a calculator
4 0
3 years ago
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A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the
vampirchik [111]
Answer:
area = pi * (64x² + 32x + 4)
Using pi = 3.14:
area = 200.96 x² + 100.48 x + 12.56

Explanation:
We are given that:
area of sphere = 4 * pi * r²
radius = 4x + 1

Substitute with the radius in the given formula to get the area as follows:
area = 4 * pi * (4x+1)²
area = 4 * pi * (16x² + 8x + 1)
area = pi * (64x² + 32x + 4)

Using pi = 3.14:
area = 200.96 x² + 100.48 x + 12.56

Hope this helps :)

7 0
3 years ago
The function P(x) = –0.015x^2 + 1.2x – 11.5 gives the profit, in thousands of dollars, when a company sells a new product at x d
dlinn [17]

Answer:

The profit decreases by $ 375 for every $ 1 increase in the selling price.

Step-by-step explanation:

From the definition of the secant line we get that the average rate of change of P(x) = -0.015\cdot x^{2}+1.2\cdot x -11.5, where x is the selling price of the product, measured in dollars per unit, is:

r = \frac{P(55)-P(50)}{55-50} (1)

Now we evaluate the function at each bound:

x = 50

P(50) = -0.015\cdot (50)^{2}+1.2\cdot (50)-11.5

P(50) = 11

x = 55

P(55) = -0.015\cdot (55)^{2}+1.2\cdot (55)-11.5

P(55) = 9.125

Then, the average rate of change is:

r = \frac{9.125-11}{55-50}

r = -0.375

Hence, the profit decreases by $ 375 for every $ 1 increase in the selling price.

8 0
3 years ago
C =tid circumference = 3.14 x diameter
chubhunter [2.5K]

Answer:

75.36.

Step-by-step explanation:

C= Pi D (Pi times diameter) so you do 3.14x 24 which then you get your answer of 75.36.

6 0
3 years ago
Can someone please explain to me asap? Will mark brainiest
Dmitriy789 [7]

Answer:

It has a period of 180 degrees.

which equals (1/2) PI

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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