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Olin [163]
3 years ago
7

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
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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
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