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2 years ago

The temperature dropped 12°F in 8 hours. If the final temperature was —7°F, what was the starting temperature?

Mathematics

2 answers:

lapo4ka [179]2 years ago

6 0

Answer:

5°F

Step-by-step explanation:

-7+12 = 5

sergij07 [2.7K]2 years ago

6 0

Answer:

5 degrees farenheit

Step-by-step explanation:

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A large on-demand video streaming company is designing a large-scale survey to determine the mean amount of time corporate execu

Diano4ka-milaya [45]

Answer:

$n=(\frac{2.262(3)}{0.25})^2 =736.79 \approx 737$

So the answer for this case would be n=737 rounded up to the nearest integer

Step-by-step explanation:

We have the following info given:

$\bar X = 12$ the sample mean

$s = 3$ the sample deviation

$n = 10$ represent the sample size

The degrees of freedom are given by:

$df =n-1 =10-1=9$

The margin of error is given by this formula:

$ME=t_{\alpha/2}\frac{s}{\sqrt{n}}$ (a)

And on this case we have that ME =0.25 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{t_{\alpha/2} s}{ME})^2$ (5)

The confidence level is 95% and the critical value for this case would be given by $t_{\alpha/2}=2.262$ , replacing into formula (5) we got:

$n=(\frac{2.262(3)}{0.25})^2 =736.79 \approx 737$

So the answer for this case would be n=737 rounded up to the nearest integer

7 0

3 years ago

An investor has $80,000 to invest in a CD and a mutual fund. The CD yields 8% and the mutual fund yields 6%. The mutual fund

zhenek [66]

Answer:

mutual fund: $9000
CDs: $71000
return: $6220, an average of 7.775%

Step-by-step explanation:

Since the mutual fund is the lower yield vehicle, only the minimum should be invested there.

The investments and returns should be ...

mutual fund: $9000, return = 6% × $9000 = $540

CD: $71000, return = 8% × $71000 = $5680

The maximum return is ...

$540 +5680 = $6220

4 0

3 years ago

has 4 glass ornaments: blue, orange, pink, and purple. How many ways can she hang them in a row so that the blue and pink orname

Tatiana [17]

There are 3 different ways she can hang them

7 0

3 years ago

Read 2 more answers

Mmmmm help HELPPPPP,,,,,,

Aleks [24]

Answer:

I guess it's 63degrees

I hope it will help

4 0

2 years ago

How do u solve 63=-9d?

Len [333]

-9d = 63
you divide both side by -9

sooo...

d = -7

7 0

3 years ago