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Ivanshal [37]
3 years ago
14

Solve by substitution y=3x+5 and y=x+1

Mathematics
1 answer:
Nesterboy [21]3 years ago
6 0

Answer:

x= -2 y= -1

Step-by-step explanation:

To solve by Substitution you would make this equation equal to each other x+1=3x+5 from there you would solve for x subtract x on both sides. and subtracting 5 from both sides 2x= -4 then divide by 2 to get x by itself x=-2 since we now found what the value of x is you can now plug in x into one of the origunal equations and get your answer for y which is y=-1

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Find x please!!<br> a.10<br> b.32<br> c.116<br> d.16
AysviL [449]

9514 1404 393

Answer:

  (d)  16

Step-by-step explanation:

Angles opposite sides of the same measure are congruent. Here, the triangle is isosceles, so the base angles are congruent:

  2x = 32

  x = 16 . . . . . . divide by 2°

5 0
3 years ago
If 1" = 2.5' then how many feet is 3.75"=
Gnesinka [82]
1" = 2.5'
2.5'(3.75") = 9.375'

3.75" = 9.375'

For every inch is 2.5ft
1 - 2.5 ft
2 - 5 ft
3 - 7.5 ft 
.75' - 0.625 ft
7.5' + 0.625' = 9.375"

5 0
3 years ago
One number is 3 times a first number. A third number is 100 more than the first number. If the sum of the three numbers is 500,
Likurg_2 [28]
<span>Let the first number be x.
Then the second number is 3x.
Then the third number is (x+100).
Sum of the numbers=500

x+3x+(x+100)=500</span>
<span>4x+(x+100)-500=0
</span><span>5x=400</span>
<span>x=80
</span><span>The first number is 80.
The second number is 240.
The third number is 180.

We can check by adding all three of those numbers together: 80+240+180 = 500
</span>
Hope this helps! If you have any questions just ask!
8 0
3 years ago
Jim nasium is building a tree house for histwo daughters. He cuts 12 pieces of wood from a board that is 128 inches long.He cuts
AnnyKZ [126]

Answer:

6.75 inches each

Step-by-step explanation:

128 less 2 inches for the cuttingblade

5 x 15.75 = 78.75

126 - 78.75 =47.25

47.25/7 = 6.75

5 0
4 years ago
Help me with this question ;&lt;;
Ket [755]

Let's set this up in equation form!

We know that 15 equals b and 8 together.

15 = b + 8

b = 7

The value of b that makes the equation true is 7.

Hope this helps!! :)

8 0
4 years ago
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