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
e-lub [12.9K]
3 years ago
15

Kristen can run at 9kmh-1 and walk at 3kmh-1. She completed a 42km marathon in 6 hours. What distance did Kristen run during the

marathon?
Mathematics
1 answer:
Hatshy [7]3 years ago
6 0
Kristen completed 42 km. We will imagine that she ran all 6 hours. => 9 * 6 =54 km which is more than she actually completed. So we will find a 9 Multiple less than 42 km and that will be 36 km. (9 * 4 = 36 km completed by running) and the rest until 42 were completed by walking (3 * 2 = 6; 6 + 36 =42).

You might be interested in
URGENT NEED HELP
Sergeeva-Olga [200]
5/50 or 1/10 in winning a prize.
8 0
3 years ago
Read 2 more answers
find the product with the exponent in the simplest form. Then, identify the values of x and y. 6^1/3 * 6^1/4 = 6^x/y
mr Goodwill [35]
<span>6^1/3 * 6^1/4 = 6^x/y

The key to solving this problem is understanding properties of exponents:
If you are multiplying two powers with the same base (in this case the base is 6), the result is the base raised to the power of the two exponents added together.

6^1/3+1/4 = 6^x/y
6^7/12 = 6^x/y
 
So the product would be 6^7/12
x = 7
y = 12</span>
6 0
2 years ago
X ≥ -2 is the inequality of the graph below<br><br> True or False
Pie
It is false because it is equal to 2 the line is straight down
5 0
2 years ago
Josh's soccer team had a competition to see which player should be the goalie. Each player tried to block 15 kicks from entering
poizon [28]
Do not click the link!
8 0
3 years ago
A car is on a driveway that is inclined 10 degrees to the horizontal. A force of 490 lb is required to keep the car from rolling
lara31 [8.8K]

Answer:

a) weight  of the car = 2816,1 lbs

b) 2773 lbs

Step-by-step explanation:

The equilibrium force is 490 lbs. That force keep the car at rest, then

∑ Fy  =  0     and  ∑Fx  =  0

Forces acting on the car:

The external force   490 lbs

weight of the car   uknown

Normal force

sin∠10°  =  0,174

cos∠10° = 0.985

∑Fx  =  0         mg*sin10°- 490 = 0      ∑Fy =  0      mg*cos10° - N  =  0

mg*0,174= 490

mg  =  490 / 0,174

mg = 2816,1 lbs

weight  of the car = 2816,1 lbs

The Normal force

mg*cos10° - N  =  0        2816,1 * 0,985 = N

N = 2773 lbs

Then equal force in magnitude and in opposite direction will car exets on the driveway

3 0
3 years ago
Other questions:
  • You buy a container of cat litter for $12.25 and a bag of cat food for x dollars. The total purchase is $19.08, which includes 6
    9·1 answer
  • What is the correct answer to 14-8=2+
    9·1 answer
  • {1, 4, 9, 4, 10, 8, 42}
    7·1 answer
  • Find the measures of two supplementary angles if their measures are in the given ratio.3:7
    11·2 answers
  • Find f(2) - g(-2) if f(x) = 6^x - 4x and g(x) = 1/2x + 10
    10·1 answer
  • Twice John’s age plus five times Claire’s age is 72. Claire is 2 times as old as John. How old is John?
    15·1 answer
  • I am leaning pre-cal right now and I don't understand it. I did arctan (3/-5) but got it wrong, how do you do this?
    9·1 answer
  • Find the value of h in the following figure.
    14·2 answers
  • In the diagram, line / is parallel to line m and line w is a transversal.
    9·1 answer
  • Fraction math problems, have lots tonight need help for some
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!