Please explain and help me with numbers 6-12

Mathematics

2 answers:

Ray Of Light [21]3 years ago

6 0

Don't over think this substitute x for 3 and minus 10 from 3
3 - 10 = -7

lesya692 [45]3 years ago

3 0

The answer to 6 is 9
and the answer to 12 is 7

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Find 30% of 70<br> a. 21<br> b. 36<br> c. 40

gtnhenbr [62]

A is your answer

We can cross multiply using x/70=30%/100

Solving it we get:
100x=2100 (70 times 30)
x=21

So we get a, 21 as your answer.

I hope this helped!

8 0

3 years ago

Read 2 more answers

How do i figure out 9 1/6 - 8 5/6<br> and 10 3/4 - 6 4/4?

Westkost [7]

Answer:

1) $9\frac{1}{6}-8\frac{5}{6}=\frac{1}{3}$

2) $10\frac{3}{4}-6\frac{4}{4}=3\frac{3}{4}$

Step-by-step explanation:

You can convert he mixed numbers to improper fractions:

1. Multiply the whole number part by the denominator of the fraction.

2. Add the product obtained to the numerator.

3. The denominator does not change.

Then:

$9\frac{1}{6}=\frac{54+1}{6}=\frac{55}{6}\\\\8\frac{5}{6}=\frac{48+5}{6}=\frac{53}{6}\\\\10\frac{3}{4}=\frac{40+3}{4}=\frac{43}{4}\\\\6\frac{4}{4}=\frac{24+4}{4}=\frac{28}{4}$