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2 years ago

CAN SOMEONE PLZZ HELP WIT THIS!!!!!

Mathematics

2 answers:

12345 [234]2 years ago

8 0

Answer:

180˚ or C

Step-by-step explanation:

Complementary angles are two angles that add up to 90˚.

Since m∠A = 40˚ then we can write and equation where ∠B equals x.

40 + x = 90

40 - 40 + x = 90 - 40

x= 50

m∠B = 50˚

Supplementary angles are two angles that add up to 180˚.

Since ∠B is the supplement of ∠C, we will use x as the value of ∠C.

50 + x = 180

50 - 50 + x= 180 - 50

x= 130

So ∠C = 180˚

Thus, 50˚ + 130˚ = 180˚

Shtirlitz [24]2 years ago

6 0

Answer:

Step-by-step explanation:

b and a=40⁰ so if b+c is supplementary they equal 180⁰ together so 180-40= 150⁰

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2 years ago

1. 2(H-8)-h=h-16

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(1) C and (2) D

(1)

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3 years ago

To compare two products such as colas, a random sample is selected to taste two types of colas (A and B). Each selected subject

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Step-by-step explanation:

Let p be the prior population proportion.

Margin of error = E

When not estimate of p is given , the formula to calculate the minimum sample size <em>n</em> = $0.25(\dfrac{z^*}{E})^2$ , where z* = critical value for given confidence interval.

Here z* for 95% confidence level is 1.96.

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