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ruslelena [56]
3 years ago
15

Can someone please answer these questions?

Mathematics
1 answer:
andrew11 [14]3 years ago
8 0

5.a) since the distance is 140km, and the time is 2hours, and we need the speed in km/h,  we have to divide the distance by time, and we will get the speed: s=d/t = 140km/2h = 70km/h

b) the distance is 43km, and the time is 30 minutes, which is 0,5hours, we do the same thing here, with given formula : s=d/t = 43km/0,5h = 86km/h

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John wants to see the formulas he has used in his spreadsheet but he does not want to see the results of the formulas. How does
vova2212 [387]
In order to see the formulas that you used in a spreadsheet, but doesn't want to see the results of the formulas, then just click on Show Formulas. That can be done by clicking the cell and click, show formula. Letter A.
5 0
3 years ago
What is the perimeter of the triangle?
12345 [234]
Answer: D

Work is shown in picture :)

6 0
2 years ago
The prices of three t-shirts styles are $24, $30 and $36. the probability of choosing a $24 t-shirt is 1/6. the probability of c
Slav-nsk [51]

\text{Answer} : \text{The expected value of a t-shirt is \$31.}

Explanation:

Since we have given that

The prices of three t-shirts styles  i.e $24, $30, $36 with their probability is given by

\frac{1}{6}, \frac{1}{2},\frac{1}{3}

As we know that,

E(X)= \sum_{1}^{3}x_iP(x_i)

\text{where} x_i \text{ is the prices of t- shirts styles}

Now,

x_1= \$24 , x_2=\$30 , x_3=$36

and

P(x_1)=\frac{1}{6},P(x_2)=\frac{1}{2}, P(x_3)=\frac{1}{3}

So,

E(X)= 24\times \frac{1}{6}+30\times\frac{1}{2}+36\times \frac{1}{3}\\=4+15+12\\=31

So, the expected value of a t-shirt = $31.

4 0
3 years ago
1.4 – 5.5 – 1.73 + 1.8 – 1.09<br><br> –5.12<br> –8.72<br> 5.12<br> –1.66
Novay_Z [31]
<span>We'll do two by two,
1.4 – 5.5= -4.1
</span><span>– 1.73 + 1.8= 0.07
Leaving </span><span>– 1.09,

You get </span> 
=-4.1+<span> 0.07- 1.09
=-4.03-1.09
=-5.12</span>
7 0
2 years ago
Write two equivalent fractions for each. 1/2 and 4/5
Butoxors [25]
An equivalent fraction for 1/2 would be 2/4. This is because you can simplify 2/4 by dividing it by 2. The final answer would be 1/2.

An equivalent fraction for 4/5 would be 8/10. It's basically the same thing. Divide them both by 2 and you'll get 4/5 since 8 divided by 2 is 4, and 10 divided by 2 is 5.

5 0
3 years ago
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