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Digiron [165]
3 years ago
15

For the following system, use the second equation to make a substitution for y in the first equation.

Mathematics
1 answer:
alisha [4.7K]3 years ago
7 0

Answer:

Option A:  3x + 5x - 4 = 1

Step-by-step explanation:

Given equations:

3x + y = 1  ------------ eq1

y + 4 = 5x ---------- eq2

eq2 can also be written as:

y = 5x - 4 ----------- eq3

By substituting value of y from eq 3 into eq1, the resulting equation will be:

3x + 5x - 4 = 1

i hope it will help you!

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The length of an edge of a cube is 5 in. what is the volume of the cube?
yKpoI14uk [10]

Hello,

Question:

The length of an edge of a cube is 5 in. What is the volume of the cube?

We Know:

Volume Formula: base x length x height = volume

Solution:

5 x 5 x 5 = 125

Answer:

125in.^3

5 0
3 years ago
a town had about 2120 acres of pine trees 40 years ago. Only about 13% of the pine trees remain. How many acres of pine trees re
DerKrebs [107]
13/100 = x/2120 \\ 100*x = 13*2120 \\ 100x = 27,560  \\ 100x/100 = 27560/100  \\ x = 275.6
275.6 acres of pine trees remain.
6 0
3 years ago
Read 2 more answers
Area of a circular ring: A = 4<img src="https://tex.z-dn.net/?f=%20%5Cpi%20" id="TexFormula1" title=" \pi " alt=" \pi " align="a
OleMash [197]
1a)      A = 4πpw
      /4πw = /4πw
  A / 4πw = p

1b) A = 4πpw
     22 = 4πp(2)
       p = 11/4π (≈0.87)

2a)        P = 2πr + 2x
      P - 2x = 2πr
        /2π      /2π
 P-2x / 2π = r

2b)    P = 2πr + 2x
      440 = 2πr + 2(110)
          r = 110/π (≈35.014)
      

      
8 0
3 years ago
Which statement is not true about the patter shown?
brilliants [131]

Answer:

Each fraction is greater than the previous fraction.

Step-by-step explanation:

Every statement is true except, the one that says "Each fracton is greater than the previous fraction." This statement is not true. I know it looks like it, but let's think about it. Each fraction is equivalent to 2/3, which means they are technically equal to each other. So that means that each fraction is not greater than the previous one. This means that the statement "Each fraction is equal to the previous fraction in the pattern multiplied by 2/2" is a true statement.

2/3 x 2/2 = 4/6

4/6 x 2/2 = 8/12

8/12 x 2/2 = 16/24

16/24 x 2/2 = 32/48

So that means that the next fraction in the pattern is indeed 32/48, making the last statement true.

3 0
3 years ago
Line AB passes through points A(-6,6) and B(12,3). If the equations of the line is written in slope-intercept form, y=me+b then
KIM [24]
<u>Use the previous given coordinates to solve for B.
Y=mx+b,
(3)=1/6(12)+b
3= 2+b
3-2=b
1=b
</u>
7 0
3 years ago
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