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Andrews [41]
3 years ago
10

How do I solve this problem

Mathematics
2 answers:
densk [106]3 years ago
5 0
You would put 6 in for k and 2 in for c, making it "5*6-20+8", which equals 18. Hope this helps! :)
Snezhnost [94]3 years ago
5 0
In these problems  u substitute the number specified so in this problem you would put 6 in for k which would makes the problem   5* 6-10c+8  then you put 2 in for c which makes  the problem 5*6-10 *(times) 2+8 so then u do the order of operation so 5 times 6 and u get 30 so now the problem is 30 - 10 *2+8 so now you do  10 times 2 is 20 so the problem is 30-20+8 now you do it from left to right so 30 -20 wich is 10 so the problem is 10 +8  and 10  plus 8 is 18 so i would say that it is 

18 

hope i help  <span />
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34567ygyt

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Answer:

(a) 2.29 km/h

(b) 9 km/h

Step-by-step explanation:

For part (a) you have to apply<em> the average speed formula</em>, which is defined by:

v=\frac{d}{t}

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d=\frac{4.00}{1.75}=2.29 km/h

For part (b) you have to calculate the running time (T) , which is the total time of the race minus the nap time:

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90/60 = 1.5 h (because there are 60 minutes in one hour)

The running time is:

T= 1.75 - 1.5 = 0.25 h

Let t1 represent the time before the nap and t2 the time after the nap:

t1+t2 = T

t1+t2 = 0.25

You have to apply the formula d=vt before and after the nap:

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0.50 = v1t1

-Afer the nap, the distance traveled was 3.50 km

3.50=v2t2

But v2=2v1 (because after the nap the rabbit runs twice as fast)

You have to solve the system of equations:

t1=0.25-t2 (I)

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2v1t2=3.50 (III)

Replacing (I) in (II)

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Applying distributive property and solving:

0.25v1-v1t2=.050

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7 0
2 years ago
3.753 rounded to the nearest tenth
Archy [21]
The tenth place will be the number right after the decimal "." You have to look at the number behind the 7 to see if the 7 will stay at 7 or if it will round up to 8. Since 5 means you round up, you round the 7 to an 8, giving you:

3.8
8 0
3 years ago
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Ierofanga [76]
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3 years ago
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