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jeyben [28]
3 years ago
6

Find 80% of 80. explain.

Mathematics
1 answer:
mafiozo [28]3 years ago
3 0
80% of 80=80/100 times 80=6400/100=64

answer is 64
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After getting 5 new rocks, George gave half of his rock collection to Susan. If George gave Susan 36 rocks, which equation could
White raven [17]

Answer:

1/2 (x+5) = 36  should be the equation that is used to determine how many rocks George started with.

Step-by-step explanation:

Let 'x' be the number of rocks George had.

As George gave, after getting 5 new rocks, half of his rock collection to Susan which is = 36 rocks

It means after getting 5 new rocks George's total rocks = 72

Given that he gave half collection to Susan = 36

Thus, before inducting 5 new rocks Georg's total rocks were = 67

Thus,

1/2 (x+5) = 36 should be the correct equation.

solving

1/2 (x+5) = 36

Multiplying both sides by 2

1/2 (x+5) × 2 = 36 × 2

x+5 = 72

x = 72 - 5

x = 67

Thus, before getting 5 new rocks, the number of rocks George had = 67

Therefore,

1/2 (x+5) = 36  should be the equation that is used to determine how many rocks George started with.

7 0
2 years ago
Read 2 more answers
Ashley is making $500 a week at her job. She receives a 20% pay raise.
denpristay [2]

Answer:

Ashley would get 100 extra dollars each week

500 X .20 = 100

6 0
3 years ago
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What is the solution to this system of equations? 4x + 5y = 7 3x – 2y = –12
Varvara68 [4.7K]

The answer is (-2,3)

hope you have a great day ;)

5 0
3 years ago
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Set up and solve an equation to find the value of x
gregori [183]
X° + 123° + 90° = 360° (angles at a point)
x° = 360° - 90° -123°
x° = 147°

The answer of x is 147°

Hope I can help you :)
3 0
3 years ago
What is the solution of the system of equations?<br> y = -3x + 7<br> y = 2x - 8
xxMikexx [17]

Answer:

x = 3, y = -2

Step-by-step explanation:

Since y=y

then, -3x +7 = 2x-8

7+8 = 3x+2x

15 = 5x

x=3

substitute

y = 2(3) - 8

y = -2

Hope that helped!!! k

6 0
3 years ago
Read 2 more answers
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