Simplify the sum. Answers in the attachment. Will award brainliest.

Mathematics

1 answer:

pychu [463]3 years ago

7 0

Answer:

your answer is C.

Step-by-step explanation:

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Please help with test offering big points pt 4

ivolga24 [154]

Answer:

69?

Step-by-step explanation:

So you first add 1 to 73 then it becomes 74 you subtract 24 its 50+19=69

4 0

3 years ago

The answer I got for this problem was 10.8 (multiplied 18 and 60 then divided by 100) however, it stated that my answer is incor

Delicious77 [7]

9514 1404 393

Answer:

30 mL

Step-by-step explanation:

The meaning of 60% solution is ...

alcohol/(total volume) = 0.60

You are told the amount of alcohol is 18 mL, so you have ...

(18 mL)/(total volume) = 0.60

Multiplying by total volume gives ...

18 mL = 0.60 × (total volume)

Then dividing by 0.60, you have ...

(18 mL)/0.60 = total volume = 30 mL

_____

Additional comment

You need to apply what you know about the real world to consider whether your answer makes any sense. If alcohol is a little more than half of the volume, and the amount of alcohol is 18 mL, then the total volume cannot be less than 18 mL. In fact, you expect it to be not quite double 18 mL.

An answer of 10.8 mL makes no sense in this context. You cannot have less total solution than you have of something that makes up a part of the total solution.

7 0

3 years ago

Expand and simplify (√10-√2)² Give your answer in the formn b-c√5 where b and c are integers

vesna_86 [32]

Answer:

12-4√5

Step-by-step explanation:

(√10-√2)²

(√10-√2)(√10-√2)

Foil/distribute

10-√20-√20+2

12-2√20