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Paul [167]
3 years ago
10

Morgan rewrote the expression 90 + (10 + 4.8) as (90 + 10) + 4.8. How will this change the work that is needed to evaluate the e

xpression?
4.8 is now multiplied by 90 and 10.
4.8 is now added to 10 before adding 90.
4.8 is now added after finding the sum of 90 and 10.
4.8 is now added to both 90 and 10.
Mathematics
2 answers:
serg [7]3 years ago
8 0

Answer:

Answer is c

Step-by-step explanation:

Nat2105 [25]3 years ago
4 0

Answer:

C

Step-by-step explanation:

just did it

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y=22x

Step-by-step explanation:

If x=1 and y=22 then y=22x

4 0
2 years ago
How do I subtract decimals from whole numbers?
Gekata [30.6K]

Answer:

Just use long subtraction by expanding the decimal places of the whole number. This is done by adding a point, and enough zeros to it to match the number of decimal digits in the other number (digits after the decimal point).

12345678

i.e: 5 - 2.48374827, 2.48374827 has 8 decimal digits, so add 8 zeros after the point.

=

1 1 1 1 1 1 1

5.00000000

-

2.48374827

_______________

2.51625173

7 + 3 = <u>1</u>0, 7 + 2 + <u>1</u> = <u>1</u>0, 8 + 1 + <u>1</u>= <u>1</u>0, 5 + 4 + <u>1</u> = <u>1</u>0, 2 + 7 + <u>1</u> = <u>1</u>0, 3 + 6 + <u>1</u> = <u>1</u>0, 1 + 8 + <u>1</u> = <u>1</u>0, 5 + 4 + <u>1</u> = <u>1</u>0, 2 + 2 + <u>1</u> = <u>5</u><u> </u><u>:</u><u> </u>5.00000000

This is basically borrowing a group of 10s which are the same as 1s in the next decimal place up.

For each digit except the first to the right, let 10 subtract that number from it and minus 1 since the 1 is carried over.

7 0
3 years ago
Twice the sum of 15 and a number
pashok25 [27]
2(15+N)
 
replace a number by N 

replace the sum of 15 and N by (15+N)

and lastly, replace twice by 2 

So your answer is 2(15+N)


7 0
3 years ago
Read 2 more answers
I don't like word problems, i need help with this guys
alina1380 [7]
Okay so first we want to find out how many cans one person uses a year. To find this we divide 16,801 by 53 and we get 317 cans a year. Using this we can find how many cans 1,694,000 people use a year by multiplying the people by 317. You get 536,998,000 cans a year, which is your answer.
7 0
3 years ago
A school custodian waxed a gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?
stealth61 [152]
A school custodian waxed a gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?

If it's 20 feet * 20 feet = to
400 sq.ft

Hope this helps!
6 0
3 years ago
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