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Vika [28.1K]
3 years ago
15

What is -2(7-y)+4=-4?

Mathematics
1 answer:
xeze [42]3 years ago
3 0
-2(7-y)+4=-4
Distributive property for -2(7-y)
-14+2y+4=-4
Addition property
-14+14+2y+4=-4+14
2y+4=10
Subtraction property
2y+4-4=10-4
2y=6
Division property
2y/2=6/2
Y=3
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Scale ____________ reduces the size of objects so they appear to be farther away.
Lunna [17]
I am pretty sure the answer is scale model

4 0
3 years ago
Which of the following shows the extraneous solution to the logarithmic equation log7(3x^3+x)- log7(x)=2
Misha Larkins [42]
To solve the give logarithm we proceed as follows;
log7(3x^3+x)-log7(x)=2
this can be written as:
log7[(3x^3+x)/(x)]=2

but;
log7(49)=2
thus;
log7(3x^3+x)/x=log7(49)
hence canceling log7 we get:
(3x^3+x)/x=49
This can be simplified further to get:
3x^2+1=49
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getting the square root of both sides we get:
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6 0
4 years ago
Read 2 more answers
How do i write 2 1/5 as a fraction
balandron [24]

2 1/5

mutiply the whole number with the denominator

whole number =2

denominator=5

2*5=10

Add 10 with the numerator=1

10+1=11

Answer:

11/5

6 0
4 years ago
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Solve the problem.
Alex

Answer:

0.081

Step-by-step explanation:

Given parameters:

Vertical drop  = 70ft

Horizontal distance  = 866ft

Unknown:

Slope of the rapids  =?

Solution:

Slope is the rise or vertical height divide by the horizonal distance.

  Slope  = \frac{vertical drop}{horizontal distance}

  Insert the parameters and solve;

  Slope  = \frac{70}{866}   = 0.081

8 0
3 years ago
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DerKrebs [107]

The answer is C.

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(distribute the 3, then subtract)

7 0
3 years ago
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