Ask question

Ask question

All categories

Nutka1998 [239]

2 years ago

11

On a certain day, the temperature changed at a rate of -2O per hour. How long did it take for the change in temperature to be -1

4O?

1 answer:

topjm [15]2 years ago

7 0

Answer:

it took 7 hours

Step-by-step explanation:

You might be interested in

I really need help plzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Daniel [21]

Answer:

1/100

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is twice 2^30 write using exponents

Alex

Twice of 2^30= 2*2^30= 2^31

5 0

3 years ago

Your answer should be a polynomial in standard form. ( − 2 h + 9 ) ( 9 h − 2 ) = (−2h+9)(9h−2)=

AleksandrR [38]

Answer:

$-18\cdot h^{2} + 85\cdot h - 18$

Step-by-step explanation:

The polynomial in standard form is:

$(-2\cdot h + 9) \cdot (9\cdot h - 2)$

$-18\cdot h^{2} + 81\cdot h +4 \cdot h - 18$

$-18\cdot h^{2} + 85\cdot h - 18$

5 0

3 years ago

According to a poll, 55 % of Americans do not know that GOP stands for Grand Old Party (Time, October 17, 2011). Assume that thi

Ivenika [448]

Answer:

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

The mean is given by:

$\mu_{\hat p} = 0.55$

And the deviation:

$\sigma_{\hat p} =\sqrt{\frac{0.55*(1-0.55)}{953}}= 0.0161$

Step-by-step explanation:

For this case we assume that the true population proportion of Americans do not know that GOP stands for Grand Old Party is 0.55 and we select a random sample of n = 953 americans

For this case we assume that we satisfy the conditions to use the normal approximation for $\hat p$

1) np >10 , n(1-p)>10

2) Independence

3) Random sample

4) The sample size is less than 10% of the population size

We assume that all the conditions are satisfied and the distribution for $\hat p$ would be:

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

The mean is given by:

$\mu_{\hat p} = 0.55$

And the deviation:

$\sigma_{\hat p} =\sqrt{\frac{0.55*(1-0.55)}{953}}= 0.0161$

3 0

3 years ago

The mean distance from Mars to the

kotegsom [21]

105.65 is your answer

8 0

3 years ago