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3 years ago

8

57% of what number is 22.2 million?

1 answer:

Mademuasel [1]3 years ago

5 0

I got 12.654 I'm not sure it is right though.

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How do you multiple fractions

Diano4ka-milaya [45]

Fractions they are easy REALLY!!

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3 years ago

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Simplify the surd 3√ 20 +√ 45

melisa1 [442]

Answer:

9 $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplify the radicals

$\sqrt{20}$

= $\sqrt{4(5)}$

= $\sqrt{4}$ × $\sqrt{5}$

= 2 $\sqrt{5}$

$\sqrt{45}$

= $\sqrt{9(5)}$

= $\sqrt{9}$ × $\sqrt{5}$

= 3 $\sqrt{5}$

Then

3 $\sqrt{20}$ + $\sqrt{45}$

= 3(2 $\sqrt{5}$ ) + 3 $\sqrt{5}$

= 6 $\sqrt{5}$ + 3 $\sqrt{5}$

= 9 $\sqrt{5}$

3 0

3 years ago

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Help me please . quick :)

ycow [4]

Answer:

x= 1

QS = 10 cm

QRS = 40cm

Step-by-step explanation:

4x + 1 = 5x

x= 1 cm

QS = 4x + 1 + 5x

= 9x + 1

= 9 + 1

= 10cm

QRS perimeter

QS + RQ + RS but ( RQ = RS)

= 10 + 15 + 15

= 40cm

3 0

3 years ago

PLZZZ HELP WILL GIVE BRAINLIESTTTT

Anarel [89]

10 is the missing number.

8 0

3 years ago

What is 464.1587734 in fraction form

loris [4]

Answer:

464.1587734 = 464 793867/5000000

3 0

3 years ago