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Gnoma [55]
2 years ago
15

Solve the following system of equations by substitution and select the correct answer below:

Mathematics
1 answer:
Cerrena [4.2K]2 years ago
3 0

Answer:

A

Step-by-step explanation:

Start with variable x.
4x - 6y = 28
Substitute the variables for numbers.
4(1) - 6(-4) = 28
Solve the new equation
4 + -24 = 28

Move to the second equation with variable y.
8x - 4y = 24
Substitute variables
8(1) - 4(-4) = 24
Solve
8 - (-16) = 24

The answer is A, x = 1, y = -4

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Amy and Mary are playing a board game that uses game money if $5 and $10. At the end of the game, Amy has n bills worth $5 each
loris [4]

Answer:

5n + 10d represented the money spend by the Amy in playing board games  of cost $5 and $10 .

Step-by-step explanation:

As given

Amy and Mary are playing a board game that uses game money if $5 and $10.

At the end of the game, Amy has n bills worth $5 each and d bills worth $10 each .

Total amount of n bills = 5n

Total amount of  d bills = 10d

Thus

Total money spend by the Amy in playing board games = Total amount of n bills + Total amount of  d bills

                                                                                             = 5n + 10d

Therefore  5n + 10d represented the money spend by the Amy in playing board games  of cost $5 and $10 .

6 0
3 years ago
What is 3,600 seconds per hour times 24 hours per day times 365.25 days per year?
iren2701 [21]

Answer:31557600

Step-by-step explanation:

3600 x 24 x 365.25

Which equal 31557600

8 0
3 years ago
Read 2 more answers
Tom brought 2 cakes to class for the
jok3333 [9.3K]
Your answer is gonna be 1/25
5 0
3 years ago
Given that S is the centroid of triangle MNO, find SQ.
DochEvi [55]

Answer:

First, we need to calculate for x. Since,

MP = PN

Thus,


3x-4 = x+4

2x = 8

x = 4


Next, we calculate for MS 

MS = 2x + 2 = 10


Since, MS = 2SQ

10 = 2SQ

Then,

SQ = 5 units


Therefore, the correct answer is B.





8 0
3 years ago
Subtract five from three times a number and the result is equal to the number plus five. find the number.
allsm [11]
3(x)-5=x+5
3x=-5+5+x
3x=x
0=x
because 3x=x is basically would make each part into 0 which would end up the same. 
6 0
3 years ago
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