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eduard
2 years ago
12

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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Please help me! i got this wrong and i dont know what i did wrong
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8 0
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

2nd number = x+101

x+x+101=-25

2x=-126

x=-63

1st number = x = -63

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6 0
3 years ago
Read 2 more answers
X^{2} -25=0 Please help meeee
-BARSIC- [3]

Answer:

x=5,x=-5

Step-by-step explanation:

x^2-25=0

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x^2-25+25=0+25

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Square root both sides:

x=\sqrt{25},\:x=-\sqrt{25} (Since a negative number multiplied by itself gives positive, there are two answers.)

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8 0
3 years ago
Read 2 more answers
R, S, and T are coplanar.<br> True<br> False
Pavel [41]

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8 0
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

LCD = 2*3 = 6

We multiply the whole equation by 6

\frac{1}{2}*6+ \frac{1}{3}*6 + x*6= *6

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subtract 5 on both sides

6x = 1

divide both sides by 6

x= \frac{1}{6}



5 0
3 years ago
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