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mafiozo [28]
3 years ago
8

Which expression is equivalent to 9a + 12?

Mathematics
2 answers:
miv72 [106K]3 years ago
7 0
3(3a+4) have a good day I hope this helps
Veronika [31]3 years ago
4 0

Answer:

3(3a+4)

Step-by-step explanation:

3(3a+4)

use distributive property

9a+12

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Which is greater 5/8 or 7/16
melamori03 [73]

Answer:

5/8=0.62

7/16=0.43

So 5/8 is greater

6 0
2 years ago
): How many times longer is the diameter of a grain of sand than the diameter of the average cell in the human body? Show your w
Airida [17]
<span>Approximately 25. Of the 5 grades of sand used in the United states, medium sand has particles ranging from 0.25 mm to 0.5 mm. For convenience, I'll use 0.5mm as the diameter of a grain of sand. Human cells range from a volume of 30 cubic micrometers (human sperm cell) up to 4 million micrometers (human egg cell). For the average human cell, I'll use an osteoblast with a volume of 4000 cubic micrometers or a diameter of 2x10^-5 meters. Now just take the diameter of a grain of sand and divide by the diameter of a human cell. 5 x 10^-4 / 2x10^-5 = 5/2 x 10^(-4 - -5) = 2.5x10^1 = 25 So the diameter of a grain of sand at 0.5 mm is approximately 25 times larger than that of a human cell at 0.02mm</span>
4 0
3 years ago
Mariela and Deborah go to the same school. Mariela lives 8 miles east of the school, while one person lives 12 miles south of th
Alik [6]

Just add it and then round

8+12=20 now round

7 0
3 years ago
Heather made a total of $451.78 last month at her part-time job. If she worked 14 hours, how much did she make per hour?
Step2247 [10]
The amount of money divided by the amount of hours will give you how much money she makes per hour.

451.78/14=32.27.

She earned $32.27 per hour.
3 0
3 years ago
9 stores is 3% of how many stores?
hichkok12 [17]
Hello there! We can solve this question by writing and solving a proportion. Set it up like this:

9/x = 3/100.

This is because 9 is 3% of x number of stores and percents are parts of 100. Setting it up like this will help us get the correct answer. Cross multiply the values . 9 * 100 is 900 and 3 * x = 3x. You get 900 = 3x. Now, divide each side by 3 to isolate the x. 3x/3 cancels out the x. 900/3 is 300. There. x = 300. 9 stores is 3% of 300 stores.
3 0
3 years ago
Read 2 more answers
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