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kobusy [5.1K]
3 years ago
15

Lesson 3.2 percent increase and decrease

Mathematics
1 answer:
sp2606 [1]3 years ago
4 0
What is the question you are asking and no one is gonna know what lesson 3.2 means.
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In 2008, the price of gasoline was $2.79 per gallon. In 2009, the price of gasoline was
ikadub [295]

Answer:

36%

Step-by-step explanation:

line up $ and % data like this:

$2.79 represents 100%

$3.79 represents  X%

cross multiply

X*2.79 = 3.79*100

divide both sides by 2.79

X= 3.79*100 / 2.79 ≈ 136%

so it increased 36%

7 0
3 years ago
Solve: -4x-8x+17=23<br> check solution
Sveta_85 [38]

Answer:

x = -1/2

Step-by-step explanation:

To solve the equation, we first need to combine like terms:

-12x+17=23

Simplify further:

-12x=6

Divide by -12 on both sides to get:

x = -\frac{1}{2}

To check  the solution, plug x back into the original equation and check if we get the correct answer:

-4(-\frac{1}{2})-8(-\frac{1}{2})+17=23

2+4+17= 23

23=23

Thus, it checks out and our answer is correct.

4 0
3 years ago
2/3y + v = s solve for y
DanielleElmas [232]

Answer:

y = \frac{3s-3v}{2}

Step-by-step explanation:

Given

\frac{2}{3} y + v = s ( subtract v from both sides )

\frac{2}{3} y = s - v

Multiply through by 3 to clear the fraction

2y = 3s - 3v ( divide both sides by 2 )

y = \frac{3s-3v}{2}

3 0
4 years ago
What is 25÷5what is 25 / 5 ​
sladkih [1.3K]

Answer:

5

Step-by-step explanation:

25/5

=5✖️5=25

=5/1

4 0
3 years ago
Read 2 more answers
If you want to buy an item in a store that costs $45.50 and is on sale for 10% off, then how much would the item actually cost y
dalvyx [7]

Answer:

$40.95

Step-by-step explanation:

Multiply 45.50 by 0.10 and get 4.55. 4.55 is the discount. Then subtract 4.55 from 45.50 and get 40.95

5 0
3 years ago
Read 2 more answers
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