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Solnce55 [7]
3 years ago
9

What is y=2x+4 and 3x+y=9 substitution method

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
8 0
You plug in 2x + 4 into the y for the other equation (3x +y ) and solve for it
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Please help will give Brianliest!!!
marshall27 [118]

Answer: y=2(x-3)-5

I hope this is good enough:

8 0
3 years ago
Today 67 students are going on a
Fudgin [204]

I know this is a little weird but the answer is <u>1.34</u> buses.

You need to divide 67 by 50.

Hope I helped and good luck!

4 0
3 years ago
Read 2 more answers
Ernesto solves the equation below by first squaring both sides of the equation. \sqrt{\dfrac{1}{2}w+8}=-2 2 1 ​ w+8 ​ =−2square
algol [13]

Answer:

<h2>w = -8</h2>

Step-by-step explanation:

Given the equation solved by Ernesto expressed as \sqrt{\dfrac{1}{2}w+8}=-2, the extraneous solution obtained by Ernesto is shown below;

\sqrt{\dfrac{1}{2}w+8}=-2\\\\square\ both \ sides \ of \ the \ equation\\(\sqrt{\dfrac{1}{2}w+8})^2=(-2)^2\\\\\dfrac{1}{2}w+8 = 4\\\\Subtract \ 8 \ from \ both \ sides\\\\\dfrac{1}{2}w+8 - 8= 4- 8\\\\\dfrac{1}{2}w= -4\\\\multiply \ both \ sides \ by \ 2\\\\\dfrac{1}{2}w*2= -4*2\\\\w = -8

Hence, the extraneous solution that Ernesto obtained is w = -8

4 0
3 years ago
Solve the following system of equations using the substitution method.
Novay_Z [31]
X=2y
2x+5y=9

substitute the x=2y into the second equation
2(2y)+5y=9
multiple the 2y by 2. 4y+5y=9
combine like terms. 9y=9
divide the 9 out from both sides. y=1
plug the y back into the first equation
x=2(1)
multiply. x=2

your answer is: x=2
y=1
7 0
3 years ago
1. A die is rolled once. What is the probability of rolling :
aleksklad [387]
Assuming this is a 6-sided die:

(a) 1/6 = 0.167 or 16.7 %
(b) zero (numbers on the die are 1-6)
(c) 3/6 = 50% (can be 2, 4, or 6)
(d) 3/6 = 50% (of the numbers you could roll, 2, 3, and 5 are prime)
7 0
3 years ago
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