1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
postnew [5]
3 years ago
11

If a car cover a distance of 189km in 4.5 hours, what is it average speed?​

Mathematics
2 answers:
sertanlavr [38]3 years ago
6 0

Answer:

Average Speed = 42 km/hr

Step-by-step explanation:

<u><em>Given:</em></u>

Distance = 189 km

Time = 4.5 hours

<u><em>Required:</em></u>

Average Speed = ?

<u><em>Formula :</em></u>

Average Speed = Total Distance Covered/ Total Time Taken

<u><em>Solution:</em></u>

Putting the givens

Average Speed = 189/4.5

Average Speed = 42 km/hr

11111nata11111 [884]3 years ago
3 0

Answer: 42 kmh

Step-by-step explanation:

Speed = distance / time

= 189 / 4.5

= 42 kmh

You might be interested in
PLEASE I BEG SOMEONE TO HELP
boyakko [2]

Answer:

16 + 3n

Step-by-step explanation:

a = 19 ;  common difference = 22 - 19 = 3

a(n) = a + (n -1 ) *d

      = 19 + (n-1)*3

      = 19 + 3n - 3

      = 16 + 3n

4 0
2 years ago
Please help ASAP!<br> Questions 1-4
marusya05 [52]

Answer:

it is a test I am not going to help

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What’s the system of y=x-4 and y=4x-10?
Natasha_Volkova [10]

Answer:

That is the system.

y = x - 4

y = 4x - 10

If you are looking for the solution then use the method of substitution or the method of elimination.

4 0
3 years ago
Read 2 more answers
uppose germination periods, in days, for grass seed are normally distributed and have a known population standard deviation of 2
natka813 [3]

Answer: 0.701

Step-by-step explanation:

Formula :  EBM =z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}} , where \alpha= significance level , \sigma = Population standard deviation, n= sample size.

As per given,  n= 22

\sigma = 2

Critical z- value for 90% confidence level : z_{\alpha/2}=1.645

Then,

 EBM =(1.645)\dfrac{2}{\sqrt{22}}\\\\=(1.645)\dfrac{2}{4.690416}\\\\\approx0.701

Hence ,  error bound (EBM) of the confidence interval with a 90% confidence level= ± 0.701

5 0
3 years ago
Chris is reading a book that has 364 pages she reads 3/4 of them then put the book away for a week then she read 3/7 of the rema
Xelga [282]
According to my calculations it should be 52 pages
7 0
3 years ago
Other questions:
  • A box contains 20 lightbulbs, of which 5 are defective.
    14·1 answer
  • Two opposite rays____form a line. A. Always B. Never C. Sometimes
    10·1 answer
  • Find the GCF for 15az and 25az
    5·2 answers
  • Find the rate of interest per annum when<br> 1. P= 900<br> T= 2 years<br> S.l. = 90
    14·1 answer
  • Please help tanks i could really use i need to graduate on time
    7·1 answer
  • What percent of 12 is 9?<br> A. 25%<br> B. 67%<br> C. 75%<br> D. 108%<br> E. 133%
    11·1 answer
  • Someone please solve this question ​
    11·1 answer
  • Anyone help pls, IMPORTANT!!!!!! Will give the brainiest. Thank you
    9·2 answers
  • The formula N(x) = x2 -2x + 2016 represents the number N of gang-related homicides across the country x years after 2017. Accord
    15·1 answer
  • Please help please help please help<br> also so subscribe to mr beast
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!