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
rodikova [14]
3 years ago
15

The Rawlins family has travelled 600 km on their vacation. This has taken them 8 hours. If they continued at the same rate, how

long will it take them to complete their journey if the total distance to be travelled is 2100 km?
A. 20 hours
B. 28 hours
C. 26 hours
D. 12 hours
Mathematics
1 answer:
spin [16.1K]3 years ago
6 0

Answer:

B. 28 hours

Step-by-step explanation:

GIVEN :- <em>Time taken by family to travel 600 km is 8 hours</em>

CALCULATIONS :-

<em>To calculate the time to travel 2100 km, we need to calculate distance traveled in 1 hour</em>

<em>Distance traveled in 1 hour = 600 km ÷ 8</em>

<em>                                              = 75 km</em>

<em>Time required to travel 2100 km = 2100 ÷ 75</em>

<em>                                                         = </em><em>28 hours</em>

Therefore time required to travel 2100 km is 28 hours.


You might be interested in
kayden is given this question 42000 x 3000 give your answer in standard form his answer is 12.6 x 10^7 is kayden correct explain
boyakko [2]

Answer:

Step-by-step explanation:

No, Kayden is not correct.

Without even making any calculations, we can evaluate his answer.

When writing standard form, the decimal point should be before the second non-zero number.

While we do not say the answer to the multiplication given is not correct, the expression for the standard form is not

I

7 0
3 years ago
If(√14/√7-2)-(√14/√7+2)=a√7+b√2 find the values of a and b where a and b are rational numbers​
seraphim [82]

Answer:

  • a = 4/3 and b = 0

============================

<h2>Given expression:</h2>

\dfrac{\sqrt{14} }{\sqrt{7}-2} -\dfrac{\sqrt{14} }{\sqrt{7}+2}

<h2>Simplify it in steps:</h2>

<h3>Step 1</h3>

Bring both fractions into common denominator:

\dfrac{\sqrt{14} (\sqrt{7}+2)}{(\sqrt{7}-2)(\sqrt{7}+2)} - \dfrac{\sqrt{14} (\sqrt{7}-2)}{(\sqrt{7}-2)(\sqrt{7}+2)}

<h3>Step 2</h3>

Simplify:

\dfrac{\sqrt{14} ((\sqrt{7}+2) - (\sqrt{7}-2))}{(\sqrt{7}-2)(\sqrt{7}+2)} =

\dfrac{\sqrt{14} (\sqrt{7}+2 - \sqrt{7}+2)}{(\sqrt{7}-2)(\sqrt{7}+2)} =

\dfrac{4\sqrt{14} }{(\sqrt{7}-2)(\sqrt{7}+2)} =

\dfrac{4\sqrt{14} }{(\sqrt{7})^2-2^2} =

\dfrac{4\sqrt{14} }{7-4} =

\dfrac{4}{3}  \sqrt{14} }

<h3>Step 3</h3>

Compare the result with given expression to get:

  • a = 4/3 and b = 0

4 0
2 years ago
Adult male heights have a normal probability distribution with a mean of 70 inches and a standard deviation of 4 inches. What is
raketka [301]

Answer: 0.5

Step-by-step explanation:

Given : Adult male heights have a normal probability distribution .

Population mean : \mu = 70 \text{ inches}

Standard deviation: \sigma= 4\text{ inches}

Let x be the random variable that represent the heights of adult male.

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

For x=70, we have

z=\dfrac{70-70}{4}=0

Now, by using the standard normal distribution table, we have

The probability that a randomly selected male is more than 70 inches tall :-

P(x\geq70)=P(z\geq0)=1-P(z

Hence, the probability that a randomly selected male is more than 70 inches tall = 0.5

4 0
3 years ago
Read 2 more answers
Please help me with this. I give brainliest and give ratings. Don't answer just to take my points or your getting reported
Maksim231197 [3]

Answer:

1/7 +5/9={1×9+5×7)/(9×7)=44/63is your answer

7 0
3 years ago
$32 per hour; cents per minute
cricket20 [7]

Answer:

53 cents per minute

Step-by-step explanation:

32 $ per hour

60 minutes per hour

100 cents per dollar

3 0
3 years ago
Read 2 more answers
Other questions:
  • A circus performer is shot out of a cannon and into a net with an acceleration of 1.5 g. What is her acceleration in meters per
    10·1 answer
  • 1/4 + 2/8 <br>adding fractions with unlike denominators show the work
    6·2 answers
  • There are 3 counselors for every 45 students enrolled in a camp. What is the maximum number of students allowed if there are 10
    12·2 answers
  • What is happening to this graph when the x- value
    7·1 answer
  • Order the steps for Multiplying/Dividing Rational Expressions correctly.
    10·1 answer
  • Mohamed decided to track the number of leaves on the tree in his backyard each year The first year there were 500 leaves Each ye
    15·2 answers
  • What are the next two numbers in the pattern: 27, 18, 12...
    9·1 answer
  • ~HELP WITH MATH PLZ~
    11·1 answer
  • 6.96 = 2.2(w − 5.1) + 3 Solve for w plz help me
    12·1 answer
  • What is the gcf of 99 and 54
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!