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Ivenika [448]
2 years ago
11

Solve the linear system using the method of substitution

Mathematics
1 answer:
nika2105 [10]2 years ago
3 0

Answer:

y = -1

x = 9

(9, -1)

Step-by-step explanation:

1) Since "x" equals <em>-4y+5, </em>substitute that into the bottom equation for x: -4y+5+2y=7

2) Combine like terms: -2y+5=7

3) Subtract 5 from both sides: -2y=-2

4) Divide both sides by -2: y=-1

Now you have figured out that <em>y= -1 </em>

1) Substitute <em>-1 </em>for <em>y </em>in the top equation: x=-4(-1)+5

2) Solve: x=4+5

3) x=9

Now you have figured out that <em>x=9 </em>

<em />

The final answer is (9, -1)

Hope this helps! :)

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Write an equation of the translated function of the parent function f(x)=|x| with the following transformations:
MrRa [10]

Answer:

Option b

Step-by-step explanation:

To write the searched equation we must modify the function f (x) = | x | in the following way:

1. Do y = f(x + 4)

This operation horizontally shifts the function f(x) = | x | by a factor of 4 units to the left on the x axis.

y = | x +4 |

2. Do y = f (\frac{1}{4}x)

This operation horizontally expands the function f (x) = | x | in a factor of 4 units. y = |\frac{1}{4}x + 1|

3. Do y = f(x)-4

This operation vertically shifts the function f (x) = | x | by a factor of 4 units down on the y-axis.

y = |\frac{1}{4}x +1| -4

4. After these transformations the function f(x) = | x | it looks like:

f(x) = |\frac{1}{4}x +1| -4

Therefore the correct option is option b. You can verify that your vertex is at point (-4, -4) by making f (-4)

f(-4) = |\frac{1}{4}(-4) +1| -4 = -4

8 0
3 years ago
Simplify the expression 3(x + 9) by distributing. Which expression is equivalent?
notsponge [240]

3(x+9)

3 multiply both x and 9

3x+27

hope it's helpful ❤❤❤

THANK YOU.❤

8 0
3 years ago
The product of 6 and 2 added to the quotient of 9 and 3
Firdavs [7]

Answer:

15

Step-by-step explanation:

Follow pemdas and multiply 6 and 2, then divide 9 and 3, finally, add the two together to get 15

6×2+9÷3

12+9÷3

12+3

=15

8 0
2 years ago
Read 2 more answers
Please help me solve this question
brilliants [131]
Bestie the answer: is C
5 0
2 years ago
Without dividing or multiplying, explain why 0.8 divided by 0.7 is greater
Art [367]

Answer:

It is greater because when you divide decimals you move the decimal which would automatically make the product less than the quotient.

Step-by-step explanation:

3 0
3 years ago
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