What is the height of 1000 pennies in cm

155 centimetres high.

Step-by-step explanation:

A penny is 1.55 millimetres thick. One thousand pennies would be 1.55 x 1000 = 1550 millimetres high. There are 10 millimetres in one centimetre, so the pennies would be 1550/10 = 155 centimetres high.

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

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step-by-step explanation: