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2 years ago

-6h - 13 - (-21) - 4h

Mathematics

2 answers:

bagirrra123 [75]2 years ago

8 0

Answer:

-10h+8

Step-by-step explanation:

First, let's open the brackets:

-6h-13+21-4h (two -'s make a +)

This is equal to -10h + 8

Scilla [17]2 years ago

3 0

-10h+8 because yu have to add -13 to 21 which is 8 and combine like terms which are -6h and -4h which equal -10h+8

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Solve for t in d = rt , if d = 57 and r = 30 t = ?

bulgar [2K]

Answer:

1.9

Step-by-step explanation:

First step would be to separate r from t

$\frac{d}{r} = t$

Then just insert the numbers

$\frac{57}{30} = 1.9$

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3 years ago

For one History test, Keith had to answer 40 questions. Of these 40 questions, Keith answered 28 of them correctly. What percent

muminat

Answer:

Keith scored 70% on the History test.

Step-by-step explanation:

We have been given that for History test, Keith had to answer 40 questions. Of these 40 questions, Keith answered 28 of them correctly.

To find the percentage Keith got on History test, we will have to figure out 28 is what percent of 40.

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3 years ago

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iris [78.8K]

Answer:

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Step-by-step explanation:

K+5/3= -7/4

subtract 5/3 from both sides

K= -7/4-5/3

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K= -21/12-20/12

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2 years ago

Simplify (7x) - (-2x)

Valentin [98]

Just try Google or calculator millions of sites simplify it

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2 years ago

Read 2 more answers

Some algae contains up to 50% oil by weight. How much oil is in a 7.3-ounce sample of this type of algae?

frutty [35]

Answer: 3.65

Step-by-step explanation:

This question is asking basically what is 50% or 1/2 of 7.3.

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Hope this helps you!

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2 years ago