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chubhunter [2.5K]
3 years ago
11

Apply the distributive property to factor out the greatest common factor. 15+21

Mathematics
1 answer:
frez [133]3 years ago
8 0

Answer:

3(5 + 7)

GCF is 3

Step-by-step explanation:

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The cost of petrol rises by 2 cents a liter. Last week a man bought 20 liters at the old price. This week he bought 10 liters at
In-s [12.5K]

Answer: the old price for 1 liter is $0.3

Step-by-step explanation:

Let x represent the old price for 1 liter of petrol.

Last week a man bought 20 liters at the old price. This means that the total amount that the man paid for 20 liters is 20x.

The cost of petrol rises by 2 cents a liter. This means that the new price per liter is x + 2/100 = x + 0.02

This week he bought 10 liters at the new price. This means that the total amount that the man paid for 10 liters is

10(x + 0.02)

= 10x + 0.2

Altogether, the petrol costs $9.20. This means that

20x + 10x + 0.2 = 9.2

30x + 0.2 = 9.2

30x = 9.2 - 0.2

30x = 9

x = 9/30

x = 0.3

3 0
3 years ago
What is the volume of the box if it is scaled down by the a factor of 1/10? 14in height 8inlegth 3in width
Crazy boy [7]

Answer:

0.336 in^2

Step-by-step explanation:

Scale down all the proportions:

14 × 0.10 = 1.4

8 × 0.10 = 0.8

3 × 0.10 = 0.3

Multiply new proportions:

1.4 × 0.8 × 0.3 = 0.336

3 0
3 years ago
Solve the inequality 1(z + 9) ≤ z + 19.
Fed [463]

Answer:

  true for all real numbers

Step-by-step explanation:

Subtracting z from both sides gives ...

  9 ≤ 19

This statement is true for all values of z. The solution is "all real numbers."

3 0
3 years ago
(1+x)=3+x <br> El resultado porfa
arsen [322]
Your answer is No solution
8 0
3 years ago
What is the solution <br> y = 1/2y-6<br> X=-4
WINSTONCH [101]
Y=1/2x-6
y=1/2(-4)-6
y=-2-6
y=-8
4 0
3 years ago
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