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Aleksandr-060686 [28]
3 years ago
8

CAN ANYONE HELP PIZZ FAST

Mathematics
1 answer:
Likurg_2 [28]3 years ago
3 0

The figure/drawing isn't needed to answer this question.

The question tells us ABCD ~ WXYZ, which means trapezoid ABCD is similar to WXYZ.

Point A corresponds to point W, B corresponds with X, C corresponds with Y, and D corresponds with Z (first, second, third, and last letters correspond with each other according to the similarity statement).

Now let's check each answer choice and see which applies to these similar trapezoids:

  • Since point B corresponds with point X and the trapezoids are similar, they must be congruent angles. Thus, the first choice is correct.
  • Point Y does not correspond with point A. Thus, it is possible the angles are not congruent. The second choice is incorrect.
  • Point A corresponds with W and B corresponds with X. Thus, line segment AB will be similar to line segment WX. However, they are not equal. Thus, the third choice is incorrect.
  • There's an equal sign in this choice, too, just like the last, and the two segments are corresponding line segments. Thus, the fourth choice is incorrect.
  • This looks like the third choice, but with a similarity symbol instead of an equal sign. Now, the statement is true and the fifth choice is correct.
  • This looks like the fourth choice but with a similarity instead of an equal sign. Now, the statement is true and the sixth choice is correct.

Let me know if you need any clarifications, thanks!

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Which is a solution of x2 – x – = 0?
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Select the correct answer from each drop-down menu.
Korolek [52]

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The y-intercept is -2 and the equation is y=x-2

Step-by-step explanation:

-That's where the line crosses the y axis.

-The equation is y= x -2 because it has a rise/run of 1/1 which is just 1 and the y intercept is -2

( I'm so sorry I totally missed the second part of the question lol)

8 0
3 years ago
In an experiment to measure the lifetimes of parts manufactured from a certain aluminum alloy, 73 parts were loaded cyclically u
kari74 [83]

Answer:

0.0094.

Step-by-step explanation:

For the given experiment, let X be the lifetimes of parts manufactured from a certain aluminum alloy.

sample size =73

Sample mean = 784

Sample standard deviation = 120

Let µ represent the mean number of kilocycles to failure for parts of this type.

Null hypothesis, H0 : µ ≤ 750

Alternative hypothesis, H1 : µ > 750.

z=\dfrac{\overline{X}-\mu}{\frac{s}{\sqrt{n}}}

where,

\overline{X} is sample mean.

\mu is population mean.

s is sample standard deviation.

n is the sample size.

z=\dfrac{783-750}{\frac{120}{\sqrt{73}}}

z=2.35

It is a right tailed test because alternative hypothesis is µ > 750. So, P-value is the probability of observing a sample mean greater that 783 or the probability of P(z>2.35).

P=P(z>2.35)

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P=0.0094

Therefore the P-value is 0.0094.

5 0
3 years ago
Analyze the diagram below and complete the instructions that follow.Figure ABCD is a kite. If line AD congruent to AB, find AB.
IRINA_888 [86]
Answer:
AB = AD = 22 units

Explanation:
1- solving for r:
We are given that:
AD is congruent to AB
This means that:
AD = AB
2r + 8 = 5r - 13
5r - 2r = 8 + 13
3r = 21
r = 21/3
r = 7
2- getting the value of AB:
Since we calculated the value of r, we can simply substitute in the equation to get AB as follows:
AB = AD = 5(7)-13 = 2(7)+8 = 22 units

Hope this helps :)

4 0
4 years ago
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