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Nady [450]
3 years ago
15

B-13=7 как решить этот уровнения​

Mathematics
1 answer:
beks73 [17]3 years ago
7 0

Answer:

b equals 20

Step-by-step explanation:

b - 13 = 7

7 + 13 = b

7 + 13 = 20

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Step-by-step explanation:

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I REALLY NEED HELP WITH THIS QUESTION ILL GIVE 15 FREE POINTS PLUS BRAINLIEST FOR CORRECT ANSWER!!!
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3 0
4 years ago
Read 2 more answers
20.) A=49.23 degrees, c=54.8Solve the right triangle. Express angles in decimal degrees.
vivado [14]

\begin{gathered} a=41.50 \\ b=35.78 \\ B=40.76\text{ \degree} \\  \end{gathered}

Explanation

Step 1

a) let

\begin{gathered} A=49.23\text{ \degree} \\ c=54.8\text{ \degree} \end{gathered}

b) b value

to find the measure of side b we can use cosine function

\begin{gathered} cos\theta=\frac{adjacent\text{ side}}{hypotenuse} \\ replace \\ cos\text{ 49.23=}\frac{b}{54.8} \\ b=54.8*cos49.23 \\ b=35.78 \end{gathered}

c) angle B

to find the measure of Angle B we can use sine function

\begin{gathered} sin\theta=\frac{opposite\text{  side}}{hypotenuse} \\ replace \\ sin\text{ B=}\frac{35.78}{54.8} \\ sin\text{ B= 0.65}\Rightarrow inverse\text{ function to isolate B} \\ B=\sin^{-1}(0.65) \\ B=40.76 \end{gathered}

d) side a

\begin{gathered} sin\theta=\frac{opposite\text{ side}}{hypotenuse} \\ sin\text{ A=}\frac{a}{c}=\frac{\placeholder{⬚}}{\placeholder{⬚}} \\ sin\text{ 49.23=}\frac{a}{54.8} \\ multiply\text{ both sides by 54.8} \\ 54.8s\imaginaryI n\text{49.23=}\frac{a}{54.8}*54.8 \\ 41.50=a \end{gathered}

so, the answer is

\begin{gathered} a=41.50 \\ b=35.78 \\ B=40.76\text{ \degree} \\  \end{gathered}

I hope this helps you

7 0
1 year ago
1. If two angles share a vertex and one side they are called _______.
wel

Answer:

1. adjacent angles

2. supplementary angles

3. Angle G = 144 Angle H = 36

4. 45 degrees

Step-by-step explanation:

For #3, u can make an equation to help solve:

4x + x =  180

5x = 180

x = 36

For #4, since complementary angles = 90, u can subtract 45 from 90 to get ur answer.

90 - 45 = 45

hope this helps!!

6 0
3 years ago
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