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Westkost [7]
3 years ago
13

Harry, hannah and howard are all going by train to london to watch the olympics. hannah departs on the 2:15 pm train. harry's tr

ain journey takes 50% longer than howard's. harry departs on the 3:00pm train.howard leaves 20 minutes after hannah and arrives at 3:25 pm. when will harry arrive?
Mathematics
2 answers:
ddd [48]3 years ago
6 0
Hanna train departs at 2:15 pm , while harry departs at 3.00 pm  and Howard departs at 2:35 pm (20 minutes after Hannah). Howard arrives at 3.25 pm which means he takes 50 minutes. Harry trains takes 50% longer than Howard which is 1.5 × 50 = 75 minutes( 1 hr 15 minutes . Therefore harry arrives at 4.15 pm ( 3.00 + 1 hr 15 minutes). 
hence, the answer is 4.15 pm
Otrada [13]3 years ago
6 0
First, calculate for the time that Howard leaves which is given to be 20 minutes later than Hannah. Hence, Howard left at 2:35 pm. The total time it took him to travel the distance is calculated by deducting 2:35 pm from 3:25 pm which will give us 50 minutes.

The number of minutes that Harry traveled would be equal to 1.5(50 minutes) which is equal to 75 minutes or equal to 1 hour and 15 minutes. If Harry departed by 3:00 pm, he will be able to reach his destination by 4:15 pm.

Answer:   <em> 4:15 pm</em>
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What is the equation of the line that passes through the point (-3, 0) and has a slope of -1/3?​
ANTONII [103]

Answer:

Y=-1/3x-1

Step-by-step explanation:

Y-0=-1/3(x+3)

5 0
2 years ago
The distribution of cholesterol levels in teenage boys is approximately normal withnbsp mu equals 170 and sigma equals 30 ​(Sour
ddd [48]

Answer: 0.0336

Step-by-step explanation:

Given : The distribution of cholesterol levels in teenage boys is approximately normal with mean :\mu= 170

Standard deviation : \sigma= 30

The formula for z-score is given by :-

z=\dfrac{x-\mu}{\sigma}

For x=225

z=\dfrac{225-170}{30}=1.83

The p-value =P(z>1.83)=1-P(z

=1-0.966375=0.033625\approx0.0336

The probability that a teenage boy has a cholesterol level greater than 225 =0.0336

4 0
3 years ago
A cone is cut by a plane parallel to its base. The small cone on top is similar to the large cone, with a similarity ratio of 1
Pavel [41]

Answer:

<h2>1:1</h2>

Step-by-step explanation:

The ratio between the volume of the small cone to that of the frustum is 1:1.

Notice that the bigger cone is double than the smaller cone, which means the smaller cone is half of the volume of the bigger cone, if you wipe the small one, you would have the frustum with the same volume as the wiped part, because if you delete the smaller cone, you would be deleting half volume of the bigger cone, giving at the end a relation 1 : 1 between the frustum and the smaller cone.

5 0
3 years ago
Write an equation and solve. Round to the nearest hundredth where necessary. 19 is what percent of 40?
snow_lady [41]
You first divide 40 by 19:

19/40=?

Then you convert that to percentage by dropping the decimal point and attaching a %

(hint: you should get 48% about :)
3 0
3 years ago
Read 2 more answers
NO FAKE ANSWERS PLEASE IM BEGGING YOU 40 POINTS!!!!!! PLEEASEEEE HELP!!!!!!!!!!!!!! I already solved half of it pls help on part
Vikki [24]

Answer:

    Part 1

Given equation:

C(t) = -0.30 (t – 12)² + 40  

For t = 0

C(t) = -0.30 (0 - 12)² + 40

C(t) = -0.30 (-12)² + 40

C(t) = -3.2

For t = 12 (noon)

C(t) = -0.30 (12 - 12)² + 40

C(t) = -0.30 (0)² + 40

C(t) = 40

For t = 24 (midnight)

C(t) = -0.30 (24 - 12)² + 40

C(t) = -0.30 (12)² + 40

C(t) = -0.30 × 144 + 40

C(t) = - 43.2 + 40

C(t) = -3.2

Part 2

attached below

Part 3

C(t) = –0.30(t – 12)² + 40

F(t)=9/5C(t)+32

Substituting the values:

F(t)=9/5{–0.30 (t – 12)² + 40}+32

F(t) = -0.54 (t – 12)² + 72 + 32

F(t) = -0.54 (t – 12)² + 104

5, 6 and 7, should be simplish

good luck, i hope this helps :)

Step-by-step explanation:

3 0
2 years ago
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