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
mash [69]
3 years ago
13

Please help! It’s not too hard! Will mark brainliest!

Mathematics
1 answer:
Yuki888 [10]3 years ago
7 0

Step-by-step explanation:

In the first part, he was travelling with twice the speed, or Vs, for distance

48 - d, for 2 hours.

speed = distance/time

distance = speed * time

First part :

48 - d = 2V * 2

⇒d + 4V = 48  

Second part:

d = V * 2

⇒d = 2V  

Substitute 2s for d in equation 1.

2s + 4s = 48

6s = 48

s = 8

The speed in the second part is 8 mph.

<u>The speed in the first part is 2s = 2(8) = 16</u>

I hope this helps

You might be interested in
Please Help!!!! Emergency!!!!
Norma-Jean [14]
The volume of a cylinder is pi r^ h
R (radius) is 5, h (height) is 2.
pi x 5^ x 2 = 157.080
6 0
3 years ago
Which represents the measures of all angles coterminal with a 400° angle?
ozzi
It’s c, for any integer,n
4 0
3 years ago
Read 2 more answers
Rewrite the equation by completing the square.
ser-zykov [4K]

Answer:

4 × 2 + 20×

Step-by-step explanation:

please your questions are mixed up

4 0
3 years ago
Solve the equation for x.<br> – 1/2x – 3 = 4
Nana76 [90]

Answer:

x = -4

Step-by-step explanation:

Multiply both sides by 2. Move constant to the right-hand side and change the sign. Add the numbers. And change the signs on both sides of the equation.

5 0
3 years ago
Read 2 more answers
In November 2010, an article titled "Frequency of Colds Dramatically Cut with Regular Exercise" appeared in Medical News Today.
disa [49]

Answer:

Part a

For the given study, the explanatory variable or independent variable is given as regularity or frequency of exercise. This variable is classify as categorical variable because variable is divided into two categories such as whether participant exercise 5 or more days a week or not.

Part b

For the given study, the response variable or dependent variable is given as frequency of colds. This variable is classified as quantitative variable because we measure the quantities or frequency of number of colds.

Part c

A confounding variable for this research study is given as incidence of upper respiratory tract infections that provides an alternative explanation for the lower frequency of colds among those who exercised 5 or more days per week, compared to those who were largely sedentary. This confounding variable is categorical in nature.

5 0
4 years ago
Other questions:
  • What is the square root of 164
    11·2 answers
  • · B__________8cm___________C·
    7·1 answer
  • What is the location of the point on the number line that is 2/5 of the way from A = -6 to B = 9
    14·1 answer
  • Why is it important to choose a bank that is a member of the FDIC?
    15·2 answers
  • What does 50/x=2 what is x
    13·2 answers
  • For any integer k &gt; 1, the term "length of an integer" refers to the number of positive prime factors, not necessarily distin
    7·1 answer
  • What is 19 half of??
    6·2 answers
  • Please help me lol..
    9·1 answer
  • Which of the following equations has a solution that is negative?
    15·2 answers
  • Find the value of each variable in the parallelogram.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!