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-BARSIC- [3]
3 years ago
8

What is the solution to the system of equations ? X=y-3 X+3y=13 . Please solve

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
4 0

X=y-3 X+3y=13 so,

first you need to plug in the value of X to make it y-3+3y=13 then you add 3 to both sides and it becomes y+3y=16

After this you can combine the y and 3y to make 4y=16 and you divide both sides by 4 to get y=4

Then you plug 4 in for every time there is a y so, X+3(4)=13 which makes the equation X+12=13 and you subtract 12 from both sides making it X=1

So solution to the system is y=4 and X=1

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Step-by-step explanation:

The denominators are 2, 3, and 4.  The least common denominator is the least common multiple (LCM) of these numbers.

To find the LCM, first write the prime factorizations.

2 = 2¹

3 = 3¹

4 = 2²

The LCM is therefore 2² × 3 = 12.

Rewrite the fractions with a denominator of 12.

⁷/₄ + ¹/₂ + ⁵/₃ + ¹/₃ + ¹/₄ + ¹/₂

= ²¹/₁₂ + ⁶/₁₂ + ²⁰/₁₂ + ⁴/₁₂ + ³/₁₂ + ⁶/₁₂

Now that the denominators are the same, we can simply add the numerators.

= ⁽²¹⁺⁶⁺²⁰⁺⁴⁺³⁺⁶⁾/₁₂

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Simplify the expression. -17+[(8-3)-(-14-19)]=
Alexxx [7]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
The larger of two numbers is 1 more than twice the
stellarik [79]

Answer:

Step-by-step explanation:

Hi there!

Let the smaller number be x and the larger number be 2x+1.

According to the question,

The sum of the numbers is 20 less than three

times the larger.

i.e x + (2x+1)= 3*(2x+1) - 20

or, x + 2x +1 = 6x + 3 -20

or, 3x + 1 = 6x - 17

or, 3x = 18

or x= 18/3

x = 6

And 2x+1 = 2*6+1 = 13.

Therefore the smaller number is 6 and larger number is 13.

Hope it helps!

7 0
3 years ago
Given h(t) = -2(t+ 5)^2 +4, find h(-8).
bekas [8.4K]

Answer:

Substitute -8 as x into the equation.

h(-8)=-2(-8+5)^2+4

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h(-8)=-2(9)+4

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:)

7 0
3 years ago
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