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tigry1 [53]
3 years ago
11

5. which ordered pair is a solution pf the equation y = -5x + 4

Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
6 0

1. Replace x with the given values and see if the equation equals the Y value:

y = -5x +4  

 -5(5)+4 - -25 +4 = -21

The answer is D.


2. -4 = g+1

Subtract 1 from each side:

-5 =g

The answer is C.


3.  The 2nd chart is correct, ( the top one on the picture with 2) because when Tony is 5 the line is on Y = 0, when the line is on 6 it is on Y=1, which keeps Tony at 5 years older.


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Nadia is mountain climbing. She started at an altitude of 19.26 feet below sea level and then changed her altitude by climbing a
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5,418.2 feet

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3 0
3 years ago
Solve for u.<br> |5u + 15| = 10
Rudiy27

Answer:

-1 and -5

Step-by-step explanation:

You must account for negative u values (which the abs nullifies).

So 5u+15=10 and 5u+15=-10 is what we have to solve for.

As for usual equations, isolate the u variable.

5u + 15 = 10

5u + 15 (-15) = 10 (-15)

5u = -5

\frac{5u}{5}=\frac{-5}{1}

u = -1

Now you can do the same operation for the other equation and you should get u = -5.

Let's make sure we did it right by replacing u with one of our solutions (-1 or -5).

|5(-1)+15| = 10\\10 = 10

That's true. What about the other one?

|5(-5)+15|=10\\10=10

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