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saw5 [17]
3 years ago
9

Please help me its about solving system by substitution

Mathematics
1 answer:
zheka24 [161]3 years ago
5 0

Answer:

heres an example of substitution in a world problem. hope this helps on some other problens

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If four times the sum of a number and 3 is divided by 2, the quotient is 0: find the number
AveGali [126]

The other number is -3.

Step-by-step explanation:

Step 1; First we develop formulae for the given information. A number is added with 3 and the resulting sum is multiplied by 4. This number is then divided by 2 and the quotient is 0. Assume the unknown number is x, then the given information is as follows

The quotient of \frac{4(x+3)}{2} is 0. So \frac{4(x+3)}{2} = 0.

Step 2; Now we solve the above equation. The denominator is taken to the RHS and the RHS remains zero.

\frac{4(x+3)}{2} = 0, 4(x+3)= 0, 4x+ 12 = 0, 4x = -12, x = \frac{-12}{4} = -3.

So the other number is -3.

3 0
4 years ago
I need help on this one
bulgar [2K]

Answer:

16 months

Step-by-step explanation:

Look at the chart on the left and look at what number of months is closest to 15,000. 16 is at 15,034

To solve mathematically:

y is the balance that his account would have. You want to find the amount of months it will take before it becomes $15,000, so 15000 is your y value

15,000= - 440.91x+22,060.7

-7,060.7= - 440.91x    Subtract 22,060.7 from both sides

16.0139=x   Divide both sides by - 440.91

6 0
3 years ago
(12) Check all that apply. Inequalities
MrRa [10]
The circle is open i think is the right answer i hope i got it right if not im very sorry :(
6 0
3 years ago
What is the following sum?
Yakvenalex [24]

Answer:

A

Step-by-step explanation:

4 0
3 years ago
Find value of the variables#7
RideAnS [48]
Because of exterior angles theorem, y=39+65, so y=104
x and y are a linear pair, so they add up to 180. x=180-104, x=76
all angles in a triangle add up to 180, so 21+104+z=180. therefore, z=55

y=104
x=76
z=55
3 0
3 years ago
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