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krok68 [10]
3 years ago
12

I need help 2x+y=7 to solve for y

Mathematics
2 answers:
Irina-Kira [14]3 years ago
8 0

Answer:

X=7-y over 2

Step-by-step explanation:

Subtract yy from both sides.

2x=7-y2x=7−y

2 Divide both sides by 22.

x=\frac{7-y}{2}x=

​2

​

​7−y

​​  

mart [117]3 years ago
5 0

Answer:

y=-2x+7

Step-by-step explanation:

Add -2x to both sides

2x+y+(−2x)=7+(-2x)

y=-2x+7

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marshall27 [118]
The answer is 11367736100!
3 0
3 years ago
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If 70 is decreased by 50%, what is the new amount
Serga [27]

Answer:

35

Step-by-step explanation:

70 × 0.5 = 35

or

50% = 1/2

so

70/2 = 35

4 0
3 years ago
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I just need one more answer to this. Please someone help!
den301095 [7]

Answer:

(1,0)

(-2,3)

(5,24)

Step-by-step explanation:

To solve this you can can just plug in the x and y values and see which work

y = x²-1

Lets test (0,1):

1 = 0²-1

1 = -1

This pair <em>does not</em> work, because 1 does not equal -1

Lets test (1,0):

0 = 1²-1

0 = 0

This <em>does</em> work, because 0 equals 0

Lets test (3,5):

5 = 3²-1

5 = 9 - 1

5 = 8

This pair <em>does not</em> work, because 5 does not equal 8

Lets test (5,24):

24 = 5²-1

24 = 25 -1

24 = 24

This pair <em>does</em> work, because 24 equals 24

Lets test (-2,3):

3 = (-2)²-1

3 = 4-1

3 = 3

This pair <em>does</em> work, because 3 equals 3

Lets test (-4,-17):

-17 = (-4)²-1

-17 = 16 - 1

-17 = 15

This pair <em>does not</em> work, because -17 does not equal 15

So the pairs that are on the graph are:

(1,0)

(-2,3)

(5,24)

4 0
3 years ago
Please help with my math assignment
Umnica [9.8K]

Answer:

you mean prostitution

Step-by-step explanation:

3 0
3 years ago
The graph of a function f(x)=5to the power of x -5 contains the point (2,y) what is the value of y
Mila [183]

I believe this this the function.

f(x) =  {5}^{x - 5}

then

f(x) =  {5}^{2 - 5}

then

f(x) =   {5}^{ - 3}

then

y =  \frac{1}{125}

3 0
3 years ago
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