2 years ago

Tom babysat for 4 1/2 hours. If he charges $8 an hour, how much will he earn?

Mathematics

1 answer:

Minchanka [31]2 years ago

6 0

Answer:

$36

Step-by-step explanation:

4.5 * 8 = 36

4 * 8 = 32

1/2 of an hour would be 1/2 of 8= 4

4+32 = $36

You might be interested in

Two trials are conducted for an experiment. In Trial A, the measured value is 240, while the actual value is 200. In Trial B, th

Zepler [3.9K]

Answer:

A is the answer 456% and 512%

Step-by-step explanation:

Percent Errors

Trial A

Trial B

Measured Value

240

195

Actual Value

200

240

Percent Error

Complete the table.

Percent Errors

Trial A

Trial B

Measured Value

240

195

Actual Value

200

240

Percent Error

440440%

435435%

5 0

1 year ago

A hospital uses cobalt-60 in its radiotherapy treatments for cancer patients. Cobalt-60 has a half-life of 7

NeTakaya

Answer:

We have 197 g of Co-60 after 18 months.

Step-by-step explanation:

We can use the decay equation.

$M_{f}=M_{i}e^{-\lambda t}$

Where:

M(f) and M(i) are the final and initial mass respectively
λ is the decay constant (ln(2)/t(1/2))
t(1/2) is the half-life of Co
t is the time at the final amount of m

$M_{f}=228e^{-\frac{ln(2)}{7} 1.5}$

$M_{f}=197\: g$

Therefore, we have 197 g of Co-60 after 18 months.

I hope it helps you!

4 0

3 years ago

Solve for x. x+3.2=−3.5 (Any help at all is greatly appreciated!)

Maksim231197 [3]

You have to subtract 3.2 from 3.5 to get x. 0.3+ 3.2=2.5 so x=0.3

7 0

3 years ago

Read 2 more answers

Their are 5280 feet in 1 mile. How many inches are there in 4 miles

schepotkina [342]

Answer:

21120

Step-by-step explanation:Because you take 5280 and multiply it by 4

7 0

2 years ago

If there are n ways of completing a task, and after completing the task in any of these n ways, there are m ways of completing a

mel-nik [20]

Answer:

Step-by-step explanation:

n × m = nm ways

8 0

2 years ago