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vlada-n [284]
4 years ago
13

Name

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
4 0

Answer:

4x+8

6x-8

48x^2+30x-4

Step-by-step explanation:

a) 4(x + 2)=4x+8

b) 2(3x - 4)  =6x-8

c) 4(3 - 6x) 2x + 18-2(2 – 3x)  

=(12-24x)2x-4+6x

=24x-48x^2-4+6x

=-48x^2+30x-4

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Which equation represents seven times a number decreased by 2 is 19? A)   7 + x -­ 2 = 19 B)   7x + 2 = 19 C)   2x - ­ 7 = 19 D)
Helen [10]

Answer:

7n - 2 = 19

Step-by-step explanation:

7 times a number is 7n.

7 times a number, decreased by 2, is 7n - 2.

7 times a number, decreased by 2, is 19  is represented by 7n - 2 = 19

4 0
3 years ago
Jim, Carla and Tomy are members of the same family. Carla is 5 years older than Jim. Tomy is 6 years older than Carla. The sum o
Blizzard [7]

We are given these three people age below:

  • Jim's age
  • Carla's age
  • Tomy's age

We define the age of Jim as any variable, because the problem doesn't give any specific age. I will define Jim's age as x.

  • Jim's age = x

Next, Carla is 5 years older than Jim. That means if Carla is 5 years older, her age would be x+5.

  • Carla's age = x+5

Then Tomy is 6 years older than Carla. That means the age would be 6+(x+5).

  • Tomy's age = 6+(x+5)

The sum of their three ages is 31 years old. That means we add all these ages and equal to 31.

\large{x + x + 5 + 6 + x + 5 = 31}

Combine like terms and solve for x.

\large{3x + 16 = 31}  \\  \large{3x = 31 - 16} \\  \large{3x = 15} \\  \large{x = 5}

Then we substitute the value of x in ages to find these three people ages.

  • Jim's age = x = 5
  • Carla's age = x+5 = 5+5 = 10
  • Tomy's age = 6+(x+5) = 6+(5+5) = 6+10 = 16.

Answer

  • Jim's age = 5
  • Carla's age = 10
  • Tomy's age = 16
4 0
3 years ago
it takes noam 1 1/2 hours to walk to her friends house 2 1/4 miles away. what is her walking pace in miles per hour?
xeze [42]

1 \frac{1}{2}  \div 2 \frac{1}{4}  =  \frac{3}{2}  \times  \frac{4}{9}  =  \frac{2}{3}

Answer: 2/3 miles per hour

8 0
3 years ago
Read 2 more answers
I need help with problem 19
alexira [117]

Answer:

24 sides

Step-by-step explanation:

Step 1:

You do 180 - 165.

180 - 165 = 15

Step 2:

You do 360 divided by 15.

360/15 = 24

Step 3:

Write your answer.

Answer: 24 sides

8 0
3 years ago
Read 2 more answers
8 x (5 - 2) = ( _ x 5) - ( _ x 2)
Kobotan [32]

Answer:

8 x (5 - 2) = ( 8 x 5) - ( 8 x 2)

Step-by-step explanation:

8 x (5 - 2) = ( _ x 5) - ( _ x 2)

Distribute

8 x (5 - 2) = ( 8 x 5) - ( 8 x 2)

5 0
3 years ago
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