All categories

2 years ago

The fahrenheit and celsius scales are related by the equation F = 9/5C+32.

Mathematics

1 answer:

Ksivusya [100]2 years ago

4 0

Step-by-step explanation:

by the equation u put down as

F=9/5C+32

since mexico is 81°f

81=9/5C+32

81-32=9/5C

49=9/5C

49*5=9C

245=9C

C=245/9

C=27.2°

to the nearest whole number

C=27°C

You might be interested in

Expand the polynomial 6x(x–3)–x(2–x)

tester [92]

Please see the attached picture for full solution

Hope it helps

Good luck on your assignment

Stay safe

4 0

3 years ago

Read 2 more answers

Please can you help me with this problem. Thanks.

Semenov [28]

33 * 1/4 = 8.25
22 * 1/4 = 5.5

x = 5.5
scale factor = 1/4

8 0

3 years ago

Which set of numbers is correctly ordered from greatest to least?

shepuryov [24]

Answer:

Step-by-step explanation:

Here is the corrected question and options:

Option 1:

$7\frac{1}{3} , \frac{221}{30} , 7.36, 3.16\sqrt{2e}$

Option 2:

$7\frac{1}{3} , 7.36 , \frac{221}{30} , 3.16\sqrt{2e}$

Option 3:

$3.16\sqrt{2e}, 7.36 , \frac{221}{30} , 7\frac{1}{3}$

Option 4:

$3.16\sqrt{2e}, \frac{221}{30} , 7.36 , 7\frac{1}{3}$

Solution:

Lets write each of the above given numbers in a simplified form:

$7\frac{1}{3}$

Simplify this by converting it into a decimal form:

This becomes:

(3*7+1) / 3 = (21 + 1) / 3 = 22/3 = 7.333333

$7\frac{1}{3}$ = 7.3

$\frac{221}{30}$

Simplify this by converting it into a decimal form:

This becomes:

221/30 = 7.3666666667

So,

$\frac{221}{30}$ = 7.367

$7.36$

This number comes with a bar sign on .36 which means that the number has a non terminating repeating decimal expansion as 7.3636363636...

So after rounding it off this becomes:

7.36

$3.16\sqrt{2e}$

Simplify this by converting it into a decimal form:

The value of e = 2.718

This becomes:

3.16 $\sqrt{2*2.718}$

= 3.16 (√5.436)

= 3.16 * 2.331523

= 7.3679949818

= 7.368

$3.16\sqrt{2e}$ = 7.368

7.367995

Now we get the numbers in decimal form:

$7\frac{1}{3}$ = 7.333333 = 7.3

$\frac{221}{30}$ = 7.3666666667 = 7.367

7.36 = 7.3636363636

$3.16\sqrt{2e}$ = 7.3679949818 = 7.368

Now lets order the numbers from greatest to least:

$3.16\sqrt{2e}$

$\frac{221}{30}$

7.36

$7\frac{1}{3}$

So the correct option is:

Option 4

$3.16\sqrt{2e}, \frac{221}{30} , 7.36 , 7\frac{1}{3}$

7 0

3 years ago

How can I trust your guys

Zinaida [17]

Answer:

Step-by-step explanation:

you just do, everyone in here needs help so i dont think theres people in here just messing arround, you can trust.

7 0

3 years ago

Read 2 more answers

Which of these statements are true if you need to make an inference about the mean of a population?

lorasvet [3.4K]

Answer:

I. You must use a t test rather than a z-test unless you know the population standard deviation.

Correct when the population deviation is not known we can assume that the distribution follows a t distribution in order to do inferences about the population mean

II. If you do not know the population standard deviation, your sample must be a simple random sample from a normal population.

False is not required since we can use the t distribution when the sample size is not large enough and when the data is not perfectly Normal

III. Sample sizes must be at least 30.

True that ensure that the condition 2) would be satisfied.

Step-by-step explanation:

In order to make inferences about the population mean we need 4 important conditions:

1) Random: We need data from a random sample of size n out of the population of interest.

2) Normal: We need that the variable follows a Normal distribution. Sometimes we just need that the distribution would be symmetric and with a large sample.

3) Independent: We need that the population would be much larger than the sample (at least 20 or 30 times as large).

4) Standard Deviation: We need to have the population standard deviation.

Now if we analyze one by one the conditons we have:

I. You must use a t test rather than a z-test unless you know the population standard deviation.

Correct when the population deviation is not known we can assume that the distribution follows a t distribution in order to do inferences about the population mean

II. If you do not know the population standard deviation, your sample must be a simple random sample from a normal population.

False is not required since we can use the t distribution when the sample size is not large enough and when the data is not perfectly Normal

III. Sample sizes must be at least 30.

True that ensure that the condition 2) would be satisfied.

6 0

3 years ago