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ratelena [41]
3 years ago
15

HELP PLEASE!!! I WILL FIVE STAR!!

Mathematics
2 answers:
Anna007 [38]3 years ago
6 0

The sum of all angles in any triangle is 180°.

\beta=180-(\alpha+\gamma)

\beta=180-(72+63)

\beta=180-135=\boxed{45}

e-lub [12.9K]3 years ago
4 0

Answer: The answer here is 45* because all you need to do is 180-72-63 then BAM you get your answer :)

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Which of the following is the best approximation of the area of a circle whose diameter is 14 feet?
Ray Of Light [21]
Area of a circle is pi x r^2

R = d/2 = 14.2 = 7

Area = 3.14 x 7^2
Area = 3.14 x 49
Area = 153.86 round to 154

Answer is 154 square feet.
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3 years ago
What is the inverse of the functionf(x)=2x+1
inna [77]
To find the inverse you have steps
1. replace f(x) with y
2. swich x and y places
3. solve for y
4. replace y with f⁻¹(x) (read 'f inverse')

so we have
f(x)=2x+1

replace f(x) with y
y=2x+1

switch x and y
x=2y+1

solve for y
x=2y+1
subtract 1
x-1=2y
divide both sides by 2
\frac{x-1}{2}=y
y=\frac{x-1}{2}
repplace y with f⁻¹(x)
f⁻¹(x)=\frac{x-1}{2}



7 0
3 years ago
Guys plss help me I need it rn plss​
OLga [1]

Answer:

First statement: Angles 1 and 3 are vertical angles.

First reason: Definition of supplementary

Second Reason: Vertical angles are congruent

Third Reason: Vertical Angles Theorem

Step-by-step explanation:

Hope this helps: Angles that form an X- Type figure are congruent.

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Answer:

(8+24)÷(12x4) the correct answer is B

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