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lyudmila [28]
3 years ago
10

10) What is the solution to the system of equations shown below?

Mathematics
1 answer:
kkurt [141]3 years ago
5 0

Answer:

B

X= 7.5

Y= -5

Step-by-step explanation:

In systems of equations, the goal is to add both of the equations together so it cancels one of the variables and you solve for that variable. Before you add they together, you multiply one of the equations by a negative number so when you add them together one of the numbers with x or y cancel.

I will upload a picture showing my work.

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Answer:

Kevin spends $1,600 on life and health insurance

Step-by-step explanation:

1% = 400

400*4 = 4%

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3 years ago
Help me out please? it would mean a lot tysm
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Answer:

0

Step-by-step explanation:

Graph Rate of Change:

(0,1) (1,3)

\frac{3-1}{1-0} = \frac{2}{1} = 2

Table Rate of Change:

(5,13) (7,17)

\frac{17 - 13}{7 - 5} = \frac{4}{2} = \frac{2}{1} = 2

2 - 2 = 0

7 0
3 years ago
Sarah has a cell phone plan that charges $0.12 per minute plus a monthly fee of $21.00. She budgets $65.50 per month for total c
kirill115 [55]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Write in word form: (24-8) ÷ 2
Vadim26 [7]

Answer:

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4 0
3 years ago
Read 2 more answers
The following table gives projections of the U.S. population from 2000 to 2100.
PSYCHO15rus [73]

The equation of best fit is f(X) = 2.91964X + 265.86364.

f(65) = 455.64024. It means that the population, in millions, after 65 years from 2000 is 455.64024.

The slope of the line is 2.91964 which means population is increasing at the rate of 2.91964 per year.

Sum of X = 550

Sum of Y = 4530.3

Mean X = 50

Mean Y = 411.8455

Sum of squares (SSX) = 11000

Sum of products (SP) = 32116

Regression Equation = y = bX + a

b = \frac{SP}{SSX} = \frac{32116}{11000} = 2.91964

a = MY - bMX = 411.85 - (2.92*50) = 265.86364

y = 2.91964X + 265.86364

f(X) = 2.91964X + 265.86364

f(65) = 2.91964\times 65 + 265.86364

f(65) = 189.7766 + 265.86364

f(65) = 189.7766 + 265.86364

f(65) = 455.64024

It means that the population, in millions, after 65 years from 2000 is 455.64024.

From the equation, f(X) = 2.91964X + 265.86364

the slope of the line is 2.91964 which means population is increasing at the rate of 2.91964 per year.

Learn more about line of best fit here:

brainly.com/question/14279419?referrer=searchResults

3 0
3 years ago
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