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MrRa [10]
2 years ago
10

Help meeeeeeeeeeeeeeee​

Mathematics
1 answer:
laila [671]2 years ago
8 0

Answer:

D.

Step-by-step explanation:

Complementary angles are two angles whose measures add to 90°.

A.

m<CFD = 150° - 100° = 50°

m<EFD = 180° - 150° = 30°

Sum = 80°

No

B.

m<AFB = 40°

m<DFE = m<EFD = 30°

Sum = 70°

No

C.

m<AFC = 100°

Sum > 100°

No

D.

m<BFC = 100° - 40° = 60°

m<DFE = 30°

Sum = 90°

Yes

Answer: D.

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ziro4ka [17]

Answer:yhjghjghj

Step-by-step ex6757lanation:

4 0
4 years ago
Events A and B are such that P(A) = 3 8 , P(B) = 2 7 and P(A ∩ B) = 1 7 Work out P(A|B)
tigry1 [53]

Answer:

\frac{17}{27}

Step-by-step explanation:

Given: Events A and B are such that P(A)=38\,,\,P(B)=27 and P(A∩B) = 17

To find: P(A|B)

Solution:

Probability refers to the chances of occurrence of any event.

An event is described as an outcome of a random experiment.

A random experiment is an experiment for which outcomes cannot be predicted.

P(A|B)= P(A∩B) ÷ P(B) = \frac{17}{27}

3 0
3 years ago
2x - 3 - 8x = 14 + 2x - 1. Solve for x.
Lilit [14]
The answer is -2. To do this, combine all like terms then solve for x by dividing.
6 0
4 years ago
Read 2 more answers
A company produces packages of granola and has changed its recipe. It claims that the proportion of almonds in how is the approp
vova2212 [387]

Answer:

The correct answer is

t = \frac{0.49-0.29}{\sqrt{\frac{(0.42)^2}{100} +}\frac{(0.29)^2}{100}  }

Step-by-step explanation:

To solve the question we note that the question involves a test statistic calculation given by

t = \frac{x_1-x_2}{\sqrt{\frac{s_1^2}{n_1} +}\frac{s_2^2}{n_2}  } Where

x₁ = Mean of sample 1

x₂ = Mean of sample 2

n₁ = Sample size of sample 1

n₂ = Sample size of sample 2

s₁ = Variance of sample 1

s₂ = Variance of sample 2

s₁ = ∑(x₁ - x₁')²/n₁,  s₂ = ∑(x₂ - x₂')²/n₂

The test statistic is a variable that is derived from a given data sample and is applied in hypothesis testing. The test statistic measures the available data against the expected value from the null hypothesis

With the given data, we have

t = \frac{0.49-0.29}{\sqrt{\frac{(0.42)^2}{100} +}\frac{(0.29)^2}{100}  }

4 0
3 years ago
You must accumulate 790 points to achieve your goal this month. If you work 22 business days this month, how many points must yo
Digiron [165]

Answer:

36 points each day.

Step-by-step explanation:

We have been given that we must accumulate 790 points to achieve our goal this month.            

To find the number of points earned each day, on average, we will divide total number of points achieved in a month by number of business days we worked.

\text{ Points earned each day on average}=\frac{790}{22}

\text{ Points earned each day on average}=35.9090909\approx 35.91    

If we need an integer answer, we can round 35.91 to 36. Therefore, we must  earn 36 points each day, on average to meet our goal.  


8 0
4 years ago
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