All categories

3 years ago

I need help plz. Can you explain it to me. I have a test tommorow but I am confused.

Mathematics

2 answers:

Darya [45]3 years ago

8 0

All you have to do is figure out how many kilometers are in 50 miles

jonny [76]3 years ago

8 0

Ok. So there are 50 miles in 1 hour.
How many km are there in one min. Well first ok all there are 60 seconds in one min. So the denominator would be 60. Then there are 1000 m in one km. So it would be 1 km in 1 mins and 1000 m in 1 second

You might be interested in

Factor the polynomial. 30xy+36x^2+30x+25y

zavuch27 [327]

30xy + 36x^2 + 30x + 25y

= 6x(5y + 6x) + 5(6x + 5y)

= (6x + 5)(6x + 5y) Answer

7 0

3 years ago

Your family needs a set of 4 tires. Which of the following deals would you prefer? Complete the explanation below to tell which

kherson [118]

Answer

Buy 2, get 2 free and/or 1/2 off

Step-by-step explanation:

OK, lets say that the tire price was 15. (l)= 15+15=30 (ll)= 15/45%= 33.33x4=133.32 (lll)= 15/2=7.5 7.5x4=30

6 0

3 years ago

5/8x64= what is the answer

uysha [10]

Answer:

40 is the answer

hope this helps

have a good day :)

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A simple random sample with n = 58 provided a sample mean of 24.5 and a sample standard deviation of 4.4. (Round your answers to

nasty-shy [4]

Answer: (23.53, 25.47)

Step-by-step explanation:

The confidence interval for population mean(when population standard deviation is unknown) is given by :-

$\overline{x} \pm\ t^*\dfrac{s}{\sqrt{n}}$

, where $\overline{x}$ = sample mean

n = sample size.

s = sample standard deviation.

t* = Critical value.

Given : $\overline{x}=24.5$

s= 4.4

Confidence level = 90% =0.090

Significance level = $\alpha=1-0.90=0.10$

Sample size : n= 58

Degree of freedom : df= n-1= 57

Using t-distribution table , the critical value :

$t_{\alpha/2,\ df}= t_{0.05,\ 57}=1.6720$

Then, the confidence interval will be :-

$24.5 \pm\ (1.6720)\dfrac{4.4}{\sqrt{58}}$

$24.5 \pm\ (1.6720)\dfrac{4.4}{7.61577310586}$

$24.5 \pm\ 0.965995165263\approx24.5\pm0.97\\\\=(24.5-0.97,\ 24.5+0.97)\\\\=(23.53,\ 25.47)$

Hence, a 90% confidence interval for the population mean = (23.53, 25.47)

6 0

3 years ago

I don’t know how to do this

Rina8888 [55]

Slope is .5/5
B) the longer you talk on the phone, the more it’s going to cost
C) .50 cents
D)30 minutes

5 0

3 years ago