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2 years ago

How do you simplify X^-7?

Mathematics

1 answer:

ad-work [718]2 years ago

8 0

Answer:

below

Step-by-step explanation:

Rewrite the expression using the negative exponent rule

b ^− n =1/ b^ n . 1 x^ 7

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10. A bell rings every 25 minutes while another bell rings every 40 minutes. If the bells rang together at 6 A.M., at what time

Ivahew [28]

Answer:

9:20 A.M.

Step-by-step explanation:

Let's list out the points at which the 25-minute bell rings:

25 mins, 50 mins, 1 hour 15 mins, 1 hour 40 mins, 2 hours 5 mins, 2 hours 30 mins, 2 hours 55 mins, 3 hours 20 mins

Next let's list out the points at which the 40-minute bell rings:

40 mins, 1 hour 20 mins, 2 hours, 2 hours 40 mins, 3 hours 20 mins

From the lists above we see a common multiple of 3 hours and 20 minutes.

So, to find what time they ring after 6 A.M. add 3 hours and 20 minutes to it.

6 AM + 3 hours and 20 minutes = 9:20 A.M.

Thus, both bells would ring together again at 9:20 A.M.

Hope this helps!!

8 0

1 year ago

SCC U of 1 pt 3 of 1 1.2.11 Assigned Media A rectangle has a width of 49 centimeters and a perimeter of 216 centimeters. V The l

Sergeu [11.5K]

Answer:

The length is of 59 cm.

Step-by-step explanation:

Perimeter of a rectangle:

The perimeter of a rectangle with width w and length l is given by:

$P = 2(w + l)$

Width of 49 centimeters and a perimeter of 216 centimeters:

This means that $w = 49, P = 216$

The length is cm.

We have to solve the equation for l. So

$P = 2(w + l)$

$216 = 2(49 + l)$

$216 = 98 + 2l$

$2l = 118$

$l = \frac{118}{2}$

$l = 59$

The length is of 59 cm.

8 0

2 years ago

Need some help :

kondor19780726 [428]

Answer:

Step-by-step explanation:

3 0

2 years ago

Y = 2x + 3 find the 151st term

harkovskaia [24]

Y=2(151)+3

y=302+3

y=305

So the 151st term is 305

3 0

2 years ago

Find the average of the following numbers. -100 and 102.

Nutka1998 [239]

The average is the sum of the numbers divided by the quantity of numbers.

-100 + 102 =2

2/2 = 1

The average is 1

8 0

3 years ago

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