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
AnnyKZ [126]
3 years ago
8

Mary left with a speed of 51 mph. Alyssa left in the opposite direction at the same time traveling 68 mph. How long does Alyssa

need to travel before that are 315 miles apart
Mathematics
2 answers:
QveST [7]3 years ago
7 0

Answer:

2.65 hours

Step-by-step explanation:

relative speed = 51 + 68 = 119

315 / 119 = 2.65 hours

Sindrei [870]3 years ago
6 0

Answer: it will take 2.65 hours

Step-by-step explanation:

Let t represent the time it takes for them to be 315 miles apart.

By the time both of them are 315 miles apart, then, they would have travelled a total distance of 315 miles.

Distance = speed × time

Mary left with a speed of 51 mph. This means that the distance that she would travel in t hours is 51 × t = 51t

Alyssa left in the opposite direction at the same time traveling 68 mph. This means that the distance that she would travel in t hours is 68 × t = 68t

Since the total distance is 315 miles, the.

51t + 68t = 315

119t = 315

t = 315/119

t = 2.65 hours

You might be interested in
The length of a rectangle is twice its width. The perimeter of the rectangle is 15 inches. What are the measurements of the leng
Airida [17]

Step-by-step explanation:

Let the breadth (b) of a rectangle be x

Then Length (L) = 2x

Now

Perimeter of the rectangle = 15 inches

Or, 2(L + b) = 15

2 ( 2x + x) = 15

2* 3x = 15

6x = 15

x = 15 / 6

x = 2.5 inch

Also Now

Length (L) = 2*2.5 = 5 inches

Breadth (b) = 2.5 inches

Hope it will help :)

5 0
3 years ago
A recipe requires 3/4 of a cup of flour.
nalin [4]

Answer:

<h2>168.75 g</h2>

Step-by-step explanation:

the required mass of flour = (3÷4)×225 = 168.75

8 0
3 years ago
PLEASE HELP ME! IM ON A TIMED QUIZZZZ
viktelen [127]

Answer:


Step-by-step explanation:

Part A: 20 shows $20 which Cory earns by mowing one lawn. 9 shows $9 which he earns by trimming one hedge. x shows the number of lawns. y shows the number of hedges. Part B: There are two terms in this expression. 20x which shows the total earning of Cory by mowing lawns. 9y which shows his earning by trimming hedges. It can be judged by the description of rates explained in part A. Part C: From explanation given in Part C, we can easily see that the expression 9y is used for the total earned from trimming hedges.



4 0
2 years ago
The area of a circle is 360.9. Find the radius of the circle. (Round to 2 decimal places.)
Ksju [112]
The radius of a circle is a=pi r^2.
so 360.9=3.14r^2, so that's around 114.94=r^2
r=10.72
4 0
3 years ago
Please answer the question in the picture!
Rama09 [41]

The correct answer is the second one, I already answered it.

8 0
3 years ago
Other questions:
  • Multiply 5 4/7 x -2 2/5
    13·1 answer
  • What is 19% of 72? I NEED TO KNOW HOW YOU GOT THE ANSWER TO!!
    14·1 answer
  • Anthony is making a collage for his art class by picking shapes randomly. He has five squares, two triangles, two ovals, and fou
    6·2 answers
  • What is another way to write 1 1/2
    11·2 answers
  • What is the surface area of a cylinder with base radius 444 and height 555?
    11·1 answer
  • If you earned $2000 in 10 mins how much would you earn in an hour?
    14·1 answer
  • Is this problem convergent or divergent?
    14·1 answer
  • Mother mixed cream and milk in the ratio of 2 parts cream to 3 parts milk. How many cups of each are needed to have 80 cups of m
    6·1 answer
  • A new bbq grill costs 725 if the extended warranty on the bbq grill costs 26% of the purchase price how much does the extended w
    6·1 answer
  • evaluate the impact of risky behaviour on your personal expectations in relation to your career help with maths too​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!