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CaHeK987 [17]
2 years ago
9

3 times the sum of a number and 5 (Write this word expression as an algebraic expression. Use x as your variable.

Mathematics
1 answer:
enyata [817]2 years ago
6 0

Answer:

3(x+5)

Step-by-step explanation:

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The original price of a shirt was $20. It was decreased to $15. What is the percent decrease of the price of this shirt?
KIM [24]

Answer:

25%

Step-by-step explanation:

Price reduction = 20 - 15 = $ 5

Percent decrease of price = (5/20)*100 = 5*5 = 25%

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3 years ago
What is the answer to 9x-7i>3(3x-7u)
Jlenok [28]

Answer:

undefined

Step-by-step explanation:

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3 years ago
At Billy's school, 80 students come to school by bicycle or by car. Together, the vehicles they arrive to school in have 270 whe
Anna35 [415]

Answer:

x = number of bicycles = 35

y = number of cars = 55

Step-by-step explanation:

Let

x = number of bicycles

y = number of cars

x + y = 80 (1)

2x + 4y = 270 (2)

From (1)

x = 80 - y

Substitute x = 80 - y into (2)

2x + 4y = 270 (2)

2(80 - y) + 4y = 270

160 - 2y + 4y = 270

- 2y + 4y = 270 - 160

2y = 110

y = 110/2

y = 55

Substitute y = 55 into (1)

x + y = 80 (1)

x + 55 = 80

x = 80 - 55

x = 35

x = number of bicycles = 35

y = number of cars = 55

6 0
3 years ago
DRAW AN AREA MODEL WITH THIS EQUATION PEOPLE LITERALLY JUST SOLVE THE MULTIPICATION ​
Iteru [2.4K]

Answer:

You need four squares.

On the top left square, you put the number 20 over it, and the number 30 to its left. Put the number 600 in the square.

Next, the bottom left square. But the number 4 on the left side of the square, and put the number 80 in the square.

Now, the top right box. put the number 8 over it, and fill it with the number 240.

Last, fill the bottom right square with the number 32.

7 0
3 years ago
Read 2 more answers
What is the expression
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-9r^2-2r+r^2+r=(-9r^2+r^2)+(-2r+r)=-8r^2-r\to B.
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3 years ago
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