2 years ago

Evaluate 3 3/4 ÷ 5/6 =

Mathematics

1 answer:

jeka942 years ago

6 0

Answer:

9/2 or 4.5

Step-by-step explanation:

15/4x6/5 = 3/2x3 = 9/2

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If a = 7 and b = 11, what is the measure of ∠B? (round to the nearest tenth of a degree) A) 32.5° B) 39.2° C) 50.5° D) 57.5°

Ilia_Sergeevich [38]

Answer:

D) 57.5°

Step-by-step explanation:

As the question is not complete. So, let's suppose it is a right angle triangle then, we can apply Pythagoras theorem to calculate the hypotenuse or the third side.

Pythagoras Theorem = $c^{2}$ = $a^{2} + b^{2}$

a = 7 and b = 11

$a^{2}$ = 49

$b^{2}$ = 121

Plugging in the values, we will get:

$c^{2}$ = 49 + 121

$c^{2}$ = 170

c = $\sqrt{170}$

To calculate the unknown angle B, we can use law of sine.

Law of sine = $\frac{a}{sinA}$ = $\frac{b}{sinB}$ = $\frac{c}{sinC}$

So,

$\frac{c}{sinC}$ = $\frac{b}{sinB}$

$\frac{\sqrt{170} }{sin90}$ = $\frac{11}{sinB}$

Sin90 = 1

sinB = $\frac{11}{\sqrt{170} }$

B = $sin^{-1}$ ( $\frac{11}{\sqrt{170} }$ )

B = 57.5°

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2 years ago

Maria earns $48 every three hours she works. How much will she earn by working 13 hours?

Valentin [98]

Answer:

$624

Step-by-step explanation:

48 x 13

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HELLPPP PLSSS<br><br>100÷10+3-100+ (6+ 19)+ 3 × -5 -19+100

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Step-by-step explanation:

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Need help. Number 54.

Vesnalui [34]

If you work out the difference between 2 and 7 you will get 4 so you add 4 each time.
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Evaluate 3 3/4 ÷ 5/6 =​

Evaluate 3 3/4 ÷ 5/6 =