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g100num [7]
3 years ago
11

3x-y=2 y=x-1 when the expression x is substituted into the first equation for y the resulting equation is

Mathematics
2 answers:
bija089 [108]3 years ago
5 0

Answer: y=-1/2

Step-by-step explanation: Solve for the first variable in one of the equations, then substitute the result into the other equation.

Hope this helps you out. ☺

avanturin [10]3 years ago
5 0

Answer:

the answer to your question Y=-1/2

Step-by-step explanation:

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Evaluate the expression, using the given value of the variable z÷3-5z+4 (z-2) when z=12
zvonat [6]
12/3-5(12)+4(12-2)
pemdass
12-2=10

12/3-5(12)+4(10)
divide or multiply
12/3=4
5(12)=60
4(10)=40

we now have
4-60+40
add
-16
7 0
4 years ago
Circle B has a radius of 7.2in. Find the diameter of circle B dilated by a factor of 8.1
Helen [10]
Since the scale factor is greater than 1, this dilation will be an enlargement. Therefore, you multiply 7.2 times 8.1 to get 58.32. This question asks for diameter, so multiply 58.32 times 2 to get 116.64 in.
5 0
3 years ago
What is the equation for g, which is f(x) = 2x2 + 3x − 1 reflected across the y-axis? Group of answer choices g(x) = −2x2 − 3x −
Sergio [31]

Answer:

g(x) = 2x^2 - 3x - 1

Step-by-step explanation:

Given

f(x) = 2x^2 + 3x - 1

Required

Determine g(x), if f(x) is reflected across the y axis

<em>When a function (x,y) is reflected across the y axis, the new function becomes (−x,y).</em>

<em />

In other words,

g(x) =  f(-x)

Calculating f(-x)

f(-x) = 2(-x)^2 + 3(-x) - 1

f(-x) = 2x^2 - 3x - 1

Substitute g(x) for f(-x)

g(x) = 2x^2 - 3x - 1

<em>Hence;</em>

g(x) = 2x^2 - 3x - 1

7 0
3 years ago
What is the slope of the line through (-9,6)(-3,9)
zheka24 [161]

Answer:

Rise/Run

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3 / -3 + 9

3 / 6

1/2

3 0
3 years ago
Correct answer will be marked brainliest<br><br>find the value of x<br>4x + 2 = 8​
amid [387]

Answer:  x = 6/4

Step-by-step explanation:  

4x + 2 = 8

4x = 6

x = 6/4 or 1 1/2

Hope this helped :)

3 0
3 years ago
Read 2 more answers
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