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Ratling [72]
3 years ago
12

Better?????????????????????

Mathematics
2 answers:
Nady [450]3 years ago
7 0

Answer:

Yes daddy.

Step-by-step explanation:

Zina [86]3 years ago
5 0

Answer:

vi need pointsi need pointsi need pointsi need points

Step-by-step explanation:

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Ken predicts that the average temperature will be −5°C in December. If he predicts the temperature will rise 6°C in January and
ipn [44]

Answer:

The equations [(-5) + (-3)] + 6 = -2 and [6 + (-5)] + (-3) = -2  he can use to find the sum of the temperatures for those months ⇒ 3rd , 5th

Step-by-step explanation:

i took the assignment

7 0
3 years ago
A true/false test has 40 questions. Suppose a passing grade is 30 or more correct answers. Test the claim that a student knows m
Angelina_Jolie [31]

Answer:

z≈3.16

p≈0.001

we reject the null hypothesis and conclude that the student knows more than half of the answers and is not just guessing in 0.05 significance level.

Step-by-step explanation:

As a result of step 2, we can assume normal distribution for the null hypothesis

<em>step 3:</em>

z statistic is computed as follows:

z=\frac{X-M}{\frac{\sqrt{p*(1-p)} }{\sqrt{N} } } where

  • X is the proportion of correct answers in the test (\frac{30}{40})
  • M is the expected proportion of correct answers according to the null hypothesis (0.5)
  • p is the probability of correct answer (0.5)
  • N is the total number of questions in the test (40)

z=\frac{0.75-0.50}{\frac{\sqrt{0.5*(0.5)} }{\sqrt{40} } } ≈ 3.16

And corresponding p value for the z-statistic is p≈0.001.

Since p<0.05, we reject the null hypothesis and conclude that the student knows more than half of the answers and is not just guessing in 0.05 significance level.

7 0
3 years ago
10 points 8' 5" − 3' 10"
crimeas [40]

Answer:

- 4 cot ( - 45 )

cos ( 390 )

sin ( 330 )

8 0
2 years ago
PLEASE HELP ME this is really hard please
krok68 [10]

Answer:

  1100

  2200

Step-by-step explanation:

Since speed is constant, the distance is proportional to the time. We notice that the number in the second column is 1650/3 = 550 times the number in the first column, so the two missing numbers are ...

  2 × 550 = 1100

  4 × 550 = 2200

7 0
3 years ago
I need help please!:D
Sergeeva-Olga [200]

Answer:

5/10= 1/2            4/12=1/3

3/9= 1/3

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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