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choli [55]
2 years ago
8

X=4y,2x+y=18 solve by substitution show all work

Mathematics
1 answer:
Mkey [24]2 years ago
7 0
Here is the math, did it on paper, sorry it’s blue. just add parenthesis around the x in the second equation and add what x equals. then solve as PEMDAS.

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Can someone help me pretty pls
Vsevolod [243]

Answer:

  Left to right: Zoe, Johana, Kami, Craig

Step-by-step explanation:

The values of x can be found by solving each of the equations.

A) x/-12 -2 = -22  ⇒  x = -12(-22 +2) = 240 . . . (first step: add 2)

B) 3x -21 = 15  ⇒  x = (15 +21)/3 = 12

C) -12x +2 = -22  ⇒  x = (-22 -2)/-12 = 2 . . . (first step: subtract 2)

D) 1/2x +66 = 126  ⇒  x = 2(126 -66) = 120

__

Zoe's equation requires adding 2 as the first step. It is equation A.

Craig's equation's solution is half that of Zoe's. 240/2 = 120. Craig's is equation  D.

Kami's equation requires subtracting 2 as the first step. It is equation C.

Johana's equation's solution is 6 times that of Kami's. 6·2 = 12. Johana's is equation B.

The names that go in the blanks, left-to-right, are ...

  Zoe, Johana, Kami, Craig

5 0
3 years ago
If you have only $50, can you afford to buy a pair of shoes marked $69.99?​
alisha [4.7K]
No, you still need about $20
4 0
1 year ago
Find the number less than 100 that has the largest number of factors​
Gnesinka [82]

Answer:

84 has 12 factors: 1, 84; 2, 42; 3, 26; 4, 21; 6, 14; 7, 12.

96 has 12 factors: 1, 96; 2, 48; 3, 32; 4, 24; 6, 16; 8, 12.

4 0
4 years ago
Read 2 more answers
Can you check if I did this right? (:
ra1l [238]
The graph looks accurate make sure you create a table of values and clearly dot the points at (0,-3) and (2,-3).
7 0
3 years ago
Read 2 more answers
Which of the binomials below is a factor of this trinomial x^2+4x-60
trasher [3.6K]

Suppose x-6 is listed as a possible answer. That is zero if x = 6. So put x=6 into the original x^2 + 4x - 60 to get 6^2 + 4*6 - 60 = 36 + 24 -60 = 0. hence x-6 is a factor.

Answer (x-6)

on this hand :x-5 is not a factor, because plugging x=5 into does not work.

6 0
3 years ago
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