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Luba_88 [7]
3 years ago
7

Please please please help me with this. I can't remember how to work this problem out. If someone could explain to me how to do

this problem that would be great.

Mathematics
1 answer:
RideAnS [48]3 years ago
6 0
If the two triangles are congruent it means that their side lengths are equal, so we can assume that x = 3x - 8 and so 2x = 8 and x = 4. Hope that helps :)
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In a restaurant, the proportion of people who order coffee with their dinner is p. A simple random sample of 144 patrons of the
mote1985 [20]
<h2>Answer with explanation:</h2>

Given : In a restaurant, the proportion of people who order coffee with their dinner is p.

Sample size : n= 144

x= 120

\hat{p}=\dfrac{x}{n}=\dfrac{120}{144}=0.83333333\approx0.8333

The null and the alternative hypotheses if you want to test if p is greater than or equal to 0.85 will be :-

Null hypothesis : H_0: p\geq0.85   [ it takes equality (=, ≤, ≥) ]

Alternative hypothesis : H_1: p  [its exactly opposite of null hypothesis]

∵Alternative hypothesis is left tailed, so the test is a left tailed test.

Test statistic : z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

z=\dfrac{0.83-0.85}{\sqrt{\dfrac{0.85(1-0.85)}{144}}}\\\\=-0.561232257678\approx-0.56

Using z-vale table ,

Critical value for 0.05 significance ( left-tailed test)=-1.645

Since the calculated value of test statistic is greater than the critical value , so we failed to reject the null hypothesis.

Conclusion : We have enough evidence to support the claim that p is greater than or equal to 0.85.

8 0
2 years ago
Solve this quadratic equation using factorization<br> 8xsquared-14x-4=0
Inga [223]
X=2 is the answer for this question.
7 0
3 years ago
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In a zoo there are 21 Lions.<br> 1/3<br> of them are male. How many females are in the zoo?
Jet001 [13]
Answer: 14 female
Explanation:
21/3= 7 male
21-7=14 female
hope it helps!
5 0
2 years ago
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10 minutes to answer<br><br> Write an expression equivalent to<br><br> 4 - (-7) <br><br><br> help
Mama L [17]
11 because -7 subtracted by 4 add kore to the 7 so think of it this way -7 is a bad guy and 4 is a bad guy to because its a subtraction so if both bad guys combine you get 11 because a negative with negative makes a positive so its 11
4 0
3 years ago
HELPP
tigry1 [53]

Answer: C peridotite

Step-by-step explanation:

idk lol i just got it right on the quiz

4 0
3 years ago
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