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8090 [49]
3 years ago
11

Find the length of a leg

Mathematics
2 answers:
N76 [4]3 years ago
8 0
The answer to your question is b.
KatRina [158]3 years ago
4 0
The triangle has two angles of 45°, so the straight legs a are equal. Pythagoras says that

a² + a² = 16², so 2a² = 256, a = √128 = √64·√2 = 8√2


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Based on the sample of 500 people, 42% owned cats. Calculate the test statistic. Round to two decimal places.
Tanzania [10]

Answer:

z= 3.63

z for  significance level = 0.05 is ± 1.645

Step-by-step explanation:

Here p = 42% = 0.42

n= 500

We formulate our null and alternative hypotheses as

H0: p= 0.42     against Ha : p> 0.42 One tailed test

From this we can find q which is equal to 1-p= 1-0.42 = 0.58

Taking p`= 0.5

Now using the z  test

z= p`- p/ √p(1-p)/n

Putting the values

z= 0.5- 0.42/ √0.42*0.58/500

z= 0.5- 0.42/ 0.0220

z= 3.63

For one tailed test the value of z for  significance level = 0.05 is ± 1.645

Since the calculated value does not fall in the critical region we reject our null hypothesis  and accept the alternative hypothesis that more than 42%  people owned cats.

4 0
3 years ago
10 points and brainliest. solve by elimination
evablogger [386]

Answer:

(3,-7) I think.

Step-by-step explanation:

3 0
3 years ago
Y= 2x + 5 what is the linear function of this?
melisa1 [442]
I think it is (0,-5)
4 0
3 years ago
90°<br> 46°<br> Find the unknown. angle measure<br> please help :)
Ganezh [65]

Answer:

44 Give me brainliest please!

Step-by-step explanation:

180-90-46

90-46

44

5 0
2 years ago
Read 2 more answers
In her wallet, Ms. Thompson has one-dollar, five-dollar and ten-dollar bills totaling $171. She has the same number of five-doll
Phantasy [73]
 6 one-dollars = $6 15 five-dollars = $75 9 ten-dollars = $90 Add them all up to get $171, so that is correct. Add the number of one-dollar bills and the number of ten-dollar bills together. 6 + 9 = 15, which is the number of five-dollar bills, so that is correct as well. Add all the numbers of bills together, 6 + 9 + 15 = 15 + 15 = 30.
4 0
2 years ago
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