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2 years ago

Xavier (x) has $20 more than Sara (s). Their combined money totals $90. Which system of equations represents this situation?

Mathematics

1 answer:

borishaifa [10]2 years ago

8 0

Answer:

B) x + s = 90, x - s = 20

Step-by-step explanation:

x + s = 90 represents that both Xavier and Sara's money combined is $90.

x - s = 20 represents that Xavier has 20 more dollars than Sara.

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3 years ago

The sum of two numbers is -25. One number is 101 less than the other. Find the numbers

zlopas [31]

Answer:

-63, 38

Step-by-step explanation:

1st number = x

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3 years ago

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X^{2} -25=0 Please help meeee

-BARSIC- [3]

Answer:

$x=5,x=-5$

Step-by-step explanation:

$x^2-25=0$

Add 25 to both sides:

$x^2-25+25=0+25$

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3 years ago

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R, S, and T are coplanar.<br> True<br> False

Pavel [41]

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3 years ago

8. There are 3 people who work full-time and are to work together on a project, but their total time on the project is to be equ

Mama L [17]

Answer:

1/6 of the third workers time

Step-by-step explanation:

one of the people is budgeted for 1 /2 of his time to the project and a second person for 1/3 of her time

Let x be the third workers time

Let the completed job time = 1

Time taken for 3 workers to complete the job = 1

$\frac{1}{2}+ \frac{1}{3} + x= 1$

now we solve for x

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We multiply the whole equation by 6

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divide both sides by 6

$x= \frac{1}{6}$

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3 years ago