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Scorpion4ik [409]
2 years ago
11

Select the correct answer.

Mathematics
2 answers:
Nataly [62]2 years ago
3 0

Answer:

Consider function f.

Which graph represents function f?

( Graphs in photo below )

W. X.

Y. Z.

A. W

B. X

C. Y

D. Z

Answer:

D. Z

Explanation:

( In photo below )

Step-by-step explanation:

Bond [772]2 years ago
3 0

Answer:

the answer is c. I did this question.

Step-by-step explanation:

You might be interested in
Does Anyone know this?
lukranit [14]

Answer:

∠AEC = 139°

Step-by-step explanation:

Since EC bisects ∠BED then ∠BEC = ∠CED = 4x + 1

∠AED = ∠AEB + ∠BEC + ∠CED = 180 ← straight angle

Substitute values into the equation

11x - 12 + 4x + 1 + 4x + 1 = 180, that is

19x - 10 = 180 ( add 10 to both sides )

19x = 190 ( divide both sides by 19 )

x = 10

Hence

∠AEC = ∠AEB + ∠BEC = 11x - 12 + 4x + 1 = 15x - 11, hence

∠AEC = (15 × 10) - 11 = 150 - 11 = 139°

6 0
2 years ago
Select all of the following 2D shapes that may be formed by slicing a square pyramid?
ivann1987 [24]

Answer:

A and D

Step-by-step explanation:

Ok so first, if you slice parallel to the base, you can get a square.

If you slice parallel to a face, you get a triangle.

8 0
3 years ago
Failinggggggggggg mathhhhhhhhhhhhhhhhhhhhhhhhh
azamat
2. (D)
3. (B) Hope it helps
3 0
3 years ago
Read 2 more answers
There are 2,000 eligible voters in a precinct. A total of 500 voters are randomly selected and asked whether they plan to vote f
Ann [662]

Answer:

0.7 - 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.647

0.7 + 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.753

And the 99% confidence interval would be given (0.647;0.753).

So the correct answer would be:

a. 0.647 and 0.753

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

The estimated population proportion for this case is:

\hat p = \frac{350}{500}=0.7

The confidence interval would be given by this formula

\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}

For the 99% confidence interval the value of \alpha=1-0.99=0.01 and \alpha/2=0.005, with that value we can find the quantile required for the interval in the normal standard distribution.

z_{\alpha/2}=2.58

And replacing into the confidence interval formula we got:

0.7 - 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.647

0.7 + 2.58 \sqrt{\frac{0.7(1-0.7)}{500}}=0.753

And the 99% confidence interval would be given (0.647;0.753).

So the correct answer would be:

a. 0.647 and 0.753

7 0
2 years ago
What is 3 1/8 - 1 7/8
Gekata [30.6K]

Answer:

Exact Form:  5 /4

Decimal Form:  1.25

Mixed Number Form:

    1

1     -----

    4

(I put it in different forms because you did not specify how you wanted your answer)

Please mark me brainliest if this helped (I need It)

3 0
3 years ago
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