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Dominik [7]
4 years ago
13

What is the value of the x variable in the solution to the following system of equations?

Mathematics
2 answers:
pav-90 [236]4 years ago
8 0
Multiply the bottom equation by 2 and you'll get

4x + 2y = 12
2x - 2y = 6

Then combine the two equations and the y's will cancel out and you'll get

6x = 18

Divide by 6.

x = 3
Tems11 [23]4 years ago
5 0
4x+2y = 12
  x+  y = 3
                       Times the bottom one by -2
4x+2y=12
2x-2y=-6
                      Cancel out the 2y and -2y and add 4x and 2x, 12 and -6 together
6x=6
                      divide by 6 for x
x=1
                      your answer is 1



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You deposit $2700 in an account that earns simple interest. After 12 months, the account earns $64.80 in interest, what is the a
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Answer:$4449.6.

Step-by-step explanation:

You deposit $2700 into a bank account paying 64.8% simple interest per year. You left the money in for 1 year. Find the interest earned and the amount at the end of those 1 year?

Result:

The interest is $1749.6 and the amount is $4449.6.

Explanation:

STEP 1: Find an interest by using the formula , where I is interest, P is total principal, i is rate of interest per year, and t is total time in years.

In this examplee P = $2700, i = 64.8% and t = 1 years, so

 

STEP 2: Find an amount by using the formula .A =P+I

Since P = $2700 and I = $1749.6 we have

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3 years ago
If your slope is undefined, what would you put for M in Point slope form?
ivann1987 [24]

Answer:

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Step-by-step explanation:

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3 years ago
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sveta [45]
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7 0
3 years ago
what is the equation of the line that is perpendicular to the line y=3/5x+10 and passes through the point (15,-5)
riadik2000 [5.3K]

Answer:

y = -\frac53x + 20

Step-by-step explanation:

Hello!

A line that is perpendicular to another has an opposite-reciprocal slope.

Meaning:

  • Flip the sign (+/-)
  • Flip the fraction

The slope perpendicular to 3/5 would be -5/3.

We can solve for the y-intercept by plugging in the x and y values given from the coordinate into the equation with out new slope.

<h3 /><h3>Solve for B</h3>
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  • -5 = -25 + b
  • 20 = b

The y-intercept of the new line is 20.

The equation is y = -\frac53x + 20

6 0
2 years ago
Brooks built two similar wooden chests in the shape of rectangular prisms. She used 16 pints of paint to cover the outside of th
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The choices for this question is found elsewhere and as follows:

<span>A. 16/9 B. 4/3 C. 32/9 D. 64/27
</span>
From the choices, i think the correct answer from the choices listed above is option B since from the situation you are reducing the ratio. Hope this answers the question.
7 0
3 years ago
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