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3 years ago

Please help, I'm so confused

Mathematics

2 answers:

kondaur [170]3 years ago

4 0

Answer:

675

Step-by-step explanation:

use the legend under the map

igor_vitrenko [27]3 years ago

4 0

Answer:

675

Step-by-step explanation:

you take 4.5 and divide it by .5

you should get 9 as your answer.

then you take 9 and multiply it by 75

you should end up with 675

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Jenny makes 5 out of every 6 foul throw shots she attempts. If she missed 36 foul throw

sergeinik [125]

Answer:

216

Step-by-step explanation:

If she makes 5/6 foul throw shots, she misses 1/6;

So, if she misses 36 foul shots missed, she attempts 6 times as many;

Therefore, we just need to multiply 36 by 6:

36×6 = 216

6 0

3 years ago

A random sample of 35 undergraduate students who completed two years of college were asked to take a basic mathematics test. The

disa [49]

Answer:

The 90 % confidence limits are (-2.09, 8.09).

Since the calculated values do not lie in the critical region we accept our null hypothesis.

Step-by-step explanation:

The null and alternative hypothesis are given by

H0: σ₁²= σ₂² against Ha: σ₁² ≠ σ₂²

Confidence interval for the population mean difference is given by

(x`1- x`2) ± t √S²(1/n1 + 1/n2)

Where S ²= (n1-1)S₁² + S²₂(n2-1)/n1+n2-2

Critical value of t with n1+n2-2= 50+ 35-2= 83 will be -1.633

Now calculating

S ²=34* (12.8)²+ (14.6)²*49/83= 192.96

Now putting the values in the t- test

(75.1 -72.1) ± 1.633 √ 192.96(1/35 +1/50)

=3 ± 5.09

=-2.09, 8.09 is the 90 % confidence interval for the difference

The 90 % confidence limits are (-2.09, 8.09).

Since the calculated values do not lie in the critical region we accept our null hypothesis.

5 0

3 years ago

A book sold 35,100 copies in its first month of release. Suppose this represents 9.2% of the number of copies sold to date. How

inessss [21]

Answer:

Total number of copies sold till date are 381522.

Step-by-step explanation:

It is given in the question the book sold 35100 copies in its first month of release and this number is 9.2% of the number of copies sold till date.

To find is how many copies have been sold.

Let the total number of copies sold be = A

Therefore 9.2% × A = 35100

$\frac{9.2}{100}A=35100$

$A=\frac{35100\times 100}{9.2}$

A = 381521.74 ≅381522 copies

3 0

3 years ago

Denise wants to burn at least 5000 calories a week through running. Based on her running speed, she estimates that she can burn

Firdavs [7]

Answer:

She will not meet her goal.

Step-by-step explanation:

There are 5 weekdays, so she will run for 0.5 * 5 = 2.5 hours over the weekdays

There are 2 weekends, so she will run for 2 * 1 = 2 hours over the weekend.

In total, this means she will run for 4.5 hours.

4.5 hours * 550 calories per hour = 2475 calories.

She will not meet her goal.

8 0

2 years ago

Find the distance between 9, 7 and 3,2

Elden [556K]

Answer:683 km

Step-by-step explanation:

4 0

3 years ago

Please help, I'm so confused​

Please help, I'm so confused