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Ymorist [56]
3 years ago
8

A car travels 120 miles in 3 hours (with a constant spee

Mathematics
2 answers:
Sindrei [870]3 years ago
8 0

Answer:

120 miles = 3 hrs

1 mile = 3/120 = 1/40

200 miles = 1/40 × 200

= 5 hrs

Q2.if we do unitary method

then..

50/25=0.5

1 apple cost 0.5

75=75*0.5 =rupee 37.5

defon3 years ago
4 0
The answer is 4 hours
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Find x. <br><br> _______________
devlian [24]

Answer:

16

Step-by-step explanation:

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7 0
3 years ago
If the correlation between height and weight of a large group of people is 0.75​, find the coefficient of determination​ (as a​
Shtirlitz [24]
Independent variable is the predictor variable which is the height and dependent variable is the response variable which is weight in this scenario.

The square of correlation coefficient gives the coefficient of determination. It is denoted by R² (R squared).

We are given:
R = 0.75

So,
R²  = 0.75²

R² = 0.5625

R²  = 56.25 %
The coefficient of determination tells how much of the trend of dependent data can be explained by the independent data using the linear regression model. So in the given case, Height can explain 56.25% of the trend in the weight.
4 0
3 years ago
Read 2 more answers
Pls help me answer this question
docker41 [41]

x=
d+a
——
b+c
Answer above
7 0
2 years ago
Light travels at approximately 2.998*10^5 kilometers per second. There are 6.048*10^5 seconds in one week. About how many kilome
BartSMP [9]

Answer:

okay, you have pay special attention to time.i.e 60secs = 1 minute, 60 minutes = 1 hour, 24 hours in one day, and 7 days in one week. No. of seconds in one week we are told is 6.1048 x 10 ^5 seconds.  

Step-by-step explanation:

s = d/t [ speed = distance/time]

therefor, rearranging, we get d = s x t

Since speed = 2.998*10^5 Km/s and time = 6.048^10^5

d = (2.998 x 10^5) x (6.048 x10^5) = (2.998 x 6.048) x 10 ^(5+5)

d = 18.131904 X 10^10 km

d = approximately 18.132 x 10^10 km (to 3 decimal places)

6 0
3 years ago
Joe spent 15/22 of his pocket money in a story book which costs $75. How many pocket money did he have at first?
ehidna [41]

Answer:

$51.1

Step-by-step explanation:

If Joe spent 15/22 of his pocket money in a story book which costs $75, he had $51.1 at first.

15/22 of 75 = 51.1363636364 or 51.1

6 0
3 years ago
Read 2 more answers
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