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3 years ago

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Mathematics

2 answers:

gayaneshka [121]3 years ago

5 0

Answer:

7(3+5)= 8+7=15

15-10= 5 (3-2=1) then 5-1= 4. So I think the answer is 4

Step-by-step explanation:

Anuta_ua [19.1K]3 years ago

5 0

7(3+5)=21+35

15-10= 5(3-2)

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Which of these professionals most directly uses geometry?

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A restaurant averages ales of $120,000 when serving 20,000 guests. The restaurant's variable costs when 20,000 is $90,000. The c

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Answer: Restaurant's monthly breakeven point in sales is $31333.

Step-by-step explanation:

Since we have given that

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Is y=10-x a function?

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Solving this problem will require a system of equations. Since it's already assigned variables, we can make the equations. They are as follows.

x + y = 13 (The sum of the two numbers, x and y, is 13.)
2x - 3y = 1 (Two times the first number minus three times the second number is 1.)

To solve this system using the substitution method, isolate either x or y in the first equation. I'll isolate y.

x + y = 13
y = 13 - x

Substitute 13 - x for y into the second equation and solve algebraically for x.

2x - 3y = 1
2x - 3(13 - x) = 1
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Substitute 8 for x into either of the original equations and solve algebraically for y.

x + y = 13
8 + y = 13
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Check all work by plugging the x- and y-values accordingly into each equation.

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