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mixer [17]
2 years ago
11

Round your answer to the tenths place if necessary Help me please! :(

Mathematics
2 answers:
xz_007 [3.2K]2 years ago
7 0
The answer should be 80.5
Katyanochek1 [597]2 years ago
6 0

Answer:

∠ B = 80.5°

Step-by-step explanation:

Since AB = AC then the triangle is isosceles with base angles congruent, so

∠ B = ∠ C , then

∠ B = \frac{180-19}{2} = \frac{161}{2} = 80.5°

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At a grand-opening sale, 20% of the first 500 customers won a prize. How many of the first 500 customers won a prize ?
katrin2010 [14]

Answer:

100

Step-by-step explanation:

5 0
2 years ago
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I need help if y’all want y’all can help me I need help
Snezhnost [94]

The answer is D. 42

A triangle equals 180 in total so what you would do it subtract 122 from 180 because 180 is also the angle of a straight line. You would get 58 then you add 58 and 80 to get 138. Subtract 138 from 180 and you get your answer of 42

6 0
3 years ago
True or False: Using the formulas A = (bh)/2 and A = 1/2(bh) will get you two completely DIFFERENT answers.
lozanna [386]

Answer:

false they are the same formulas

8 0
2 years ago
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Given: is an angle bisector of ∠JMK<br><br><br>Prove: m
astraxan [27]

Answer:

An angle bisector is a line passing through the vertex of the angle that cuts the angle into two equal smaller angles.

Given: MN is angle bisector,

then  

\angle JMN \cong \angle NMK            .......  [1]

Congruent angles are  two or more angles that have the same measure.

then;

by definition of congruent angles

[1]⇒ m\angle JMN = m\angle NMK                ......[2]

By the  Angle addition postulates states that if M is in the interior of ∠JMK then,

m\angle JMN+m\angle NMK =m\angle JMK            ......[3]

Now, by substitution property ; substitute the equation [2] in [3] we get;

m\angle JMN+m\angle JMN =m\angle JMK                 ......[4]

Like terms terms whose variables  are the same

Combine like terms in equation [4] we get

2 \cdot m\angle JMN=m\angle JMK                      ......[5]

Division property of equality states that you divide the same number to both sides of an equation.

Divide by 2 to both sides in equation [5] , we get

m\angle JMN= \frac{1}{2} m\angle JMK    


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3 years ago
(Photo) Please help me!
SOVA2 [1]
Volume =πr²*h=π*7²*4=196π
answer B
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2 years ago
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