3. Which sum is rational? A. 7+ 18 B. 125 +1.75 C. 3 + 5.5 D. 1+ V2

Mathematics

1 answer:

omeli [17]3 years ago

6 0

Answer:

a is rational

Step-by-step explanation

b and c would result in a decimal

and d) v2 isnts a number or a variable

You might be interested in

Write 6^8 • 6^7 as a single power

taurus [48]

<h3>Write 6^8 • 6^7 as a single power:</h3>

$6^8 \times 6^7 = 6^{15}$

Solution:

Given that,

We have to write 6^8 • 6^7 as a single power

Given is:

$6^8 \times 6^7$

Use the following law of exponent

$a^m \times a^n = a^{m+n}$

When, the base is same, powers gets added

Therefore,

$6^8 \times 6^7 = 6^{8+7}\\\\6^8 \times 6^7 = 6^{15}$

Thus the given is written as a single power

3 0

2 years ago

During a fundraiser, Ms. Dawson’s class raised $560, which is 25% more than Mr. Casey’s class raised. How much money did Mr. Cas

evablogger [386]

Answer:

$420

Step-by-step explanation:

To work this out you would need to find the 25% decrease of 560. To do this you would first divide 25 by 100, which gives you 0.25. Then you would minus 0.25 from 1, which gives you 0.75. This is because when finding percentage decreases you would first have to convert it into a decimal. Then you would have to minus it from 1 , to make sure that it will be a 25% decrease not a 75% decrease. Then you would multiply 560 by 0.75, which gives you 420.

1) Divide 25 by 100.

$25/100=0.25$