MATHEMATICS MIDDLE SCHOOL

Solve by substitution to find x and y

4=-x-y
2x-y=10

Answers

Answer 1
Answer:

Hello Jay

4=-x-y

2x-y=10

We need to solve 4=-x-y for x

Now add x to both sides

4+x=-x-y+x

x+4==-y

Add -4 to both sides

x+4-4=-y-4

x=-y-4

Now we need to substitute -y-4 for x in 2x-y=10

2x-y=10

2(-y-4)-y=10

To find the result of this factor we need to simplify

-3y-8=10

Add 8 to both sides so we can start finding the y value

-3y-8+8=10+8

-3y=18

Divide both sides by -3 so we can find the y value

-3y/-3=18/-3

y=-6

Now let's find the x value by substitute -6 for y in x=-y-4

x=-y-4

x=-(-6)-4

x=2

Answer: x=2 and y=-6


I hope that's help:0

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Nick's bank account balance was $21. if he writes a check for $30 and his bank charges him $35 for overdrawing his account, find his account balance

Answers

The balance of Nick's bankaccount is $86.

Concept:

  • As we have the bank balance after deducting the check amount and bank charges, we will add those amounts to the balance to get the initial bank balance.

How to solve this question?

  • Amount of Check = $30
  • Amount of Bank Charges = $35
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  • ∴ Initial bank balance = 21 + 30 + 35 = $86

Thus ,the balance of Nick's bank account is $86.

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It is saying that the Balance was 21 if he wrote a check for 30 and The bank was charging him $35 for overdrawing his account of basically you’re gonna just Add so 21+30+35 is 86

140% of what is 56? My profile says I'm 19 but I'm really not.

Answers

Whole * percent = part\n x * 1.40 = 56\n x = (56)/(1.4)=40

x = 40

How tall is a tower of 100 pennies

Answers

A stack of 100 pennies, one on top of the other, is 15.5 centimeters tall. 

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Answers

Answer:

The answer is -4.

Step-by-step explanation:

Start with distribution: -6x+9=33

Additive Inverse of 9: -6x+9=33

                                          -9   -9

                                      ----------------

  Divide both sides by -6: -6x  = 24

                                            x=-4                                      

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Answers

Answer:

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Step-by-step explanation:

It's pretty simple. The cost of a concert ticket is unknown, which is h. And a service charge is $6.75. You are adding how much you would have to pay. That's why you add h+$6.75
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