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Otrada [13]
3 years ago
12

Which best represents the commutative property of addition?

Mathematics
1 answer:
Alexxandr [17]3 years ago
6 0

Answer:

i think D

Step-by-step explanation:

please mark me brainliest please

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Celine has a bottle that contains 20% milk and the rest water. The bottle has 1 liter of water.
sashaice [31]
We know the amount of water is 1 liter and the milk is 20% of that. Let y be the total amount of liquid in the bottle.
so
y=1+(0.2*1)
7 0
4 years ago
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: 2/18 of the students in Mr. P’s classroom had blonde hair. If there were 36 students in his class, how many students did not h
sesenic [268]
4 did not have blonde hair
7 0
3 years ago
Find the area of the circle. Round your answer to the nearest hundredth with 3in i really need help
REY [17]

Answer:

The area of the circle with a 3-inch diameter is 7.07 square inches.

Step-by-step explanation:

The formula for the area of a circle is

A = πr²

If you are given diameter, take half of that to get the radius:  3 ÷ 2 = 1.5

Then take the radius, 1.5 and square it  (multiply by itself)  1.5 × 1.5 = 2.25

Then multiply r² times pi. You can use 3.14. (sometimes you will need 3.14159)

2.25 × 3.14 = 7.065

Your instructions are to "round to the nearest hundredth" so you look to the thousandth place and see a 5. Rules fro rounding: "If the number is 5 or higher, add 1 to the place you are rounding to. If 4 or less, leave the place as it is."

You see a 6 in the hundredths place. Add 1. so the rounded answer is 7.07.

Then you put in the units measure. Inches are given, so the Area will be square inches

7.07 in²

3 0
3 years ago
A chemist wants to make 45 ml of a 17% acid solution by mixing a 13% acid solution and a 19 % acid solution. How many milliliter
liq [111]

Answer:

22 millilitres of 13% solution

23 millilitres of 19% solution

Step-by-step explanation:

A + B = 45

13A + 19B = 45 x 17 = 765

-13A - 13B + 13A + 19B = -650 + 765 = 115

5B = 115

B = 23

22 + 23 = 45

A = 22

6 0
2 years ago
55/78= what as a decimal?
Alinara [238K]
55/78
= (55*(50/39)) / (78*(50/39))
= 70.(512820)/ 100
= 0.7(051282)

The final answer is 0.7(051282)~
5 0
3 years ago
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