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3 years ago

Help me with this please

Mathematics

2 answers:

svp [43]3 years ago

8 0

3/2
I picked a point and counted up 3 and over 2 to the next point

SCORPION-xisa [38]3 years ago

7 0

3/2 remember rise over run

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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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3 years ago

When was the first world war

MAVERICK [17]

Answer:

July 28, 1914--World War 1

Step-by-step explanation:

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3 years ago

48 is 9 less than 3 times a number. What is the number?

Kamila [148]

19 x 3 = 57 57 - 9 = 48 Your answer is 19.

4 0

4 years ago

Read 2 more answers

PLS HELP! DUE IN 30 MINUTES!

gayaneshka [121]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Sovle the equation for x0.5x-4=12

Amanda [17]

Value of x is x=32

Step-by-step explanation:

We need to find the value of x of the equation $0.5x-4=12$

Solving the equation and finding value of x

$0.5x-4=12\\$

Adding 4 on both sides

$0.5x-4+4=12+4\\0.5x=16\\$

Divide both sides by 0.5

$\frac{0.5x}{0.5} =\frac{16}{0.5}\\ x=32$

So, value of x is x=32

Keywords: Solving Equations

Learn more about Solving Equations at:

#learnwithBrainly

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3 years ago