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
Serjik [45]
3 years ago
11

The track team is trying to reduce their time for a relay race. First they reduce their time by 1.2 minutes. Then they are able

to reduce that time by 1/10. If their final time is 3.60 minutes, what was their beginning time?
Mathematics
1 answer:
Digiron [165]3 years ago
5 0

Answer:

5.2 Minutes, or 5 minutes and 12 seconds

Step-by-step explanation:

You can solve this problem by working backward.  Since our number gets smaller by a 1/10 or 0.1, in order to work backward we must multiply 3.60 by 10/9, since one tenth has been taken away already.  When we do this, we get 4.0.  When we add 1.2 minutes to that, we get a final answer of 5.2 minutes, or 5 minutes and 12 seconds.

You might be interested in
At a store, apples cost $0.80 $0.80 each and oranges cost $0.95 $0.95 each. Harry buys some apples and oranges and spends $9.55
gregori [183]

Answer:

Harry buys 6 apples and 5 oranges at the store.

Step-by-step explanation:

Given:

Cost of each apples = $0.8

Cost of each oranges = $0.95

Total money spend =$9.55

Number of fruits bought= 11

We need to find the number of apples bought and number of oranges were bought.

Solution:

Let the number of apples bought be 'a'.

Let the number of oranges were bought be 'o'.

Number of fruits bought= 11

So we can say that;

Number of fruits bought is equal to sum number of apples bought and number of oranges were bought.

framing in equation form we get;

a+o=11 ⇒ equation 1

Now we can say that;

Total money spend is equal to number of apples bought multiplied by Cost of each apples plus number of oranges were bought multiplied by Cost of each oranges.

framing in equation form we get;

0.8a+0.95o=9.55 ⇒ equation 2

Now Multiplying equation 1 by 0.8 we get;

0.8(a+o)=0.8\times11

0.8a+0.8o=8.8 ⇒ equation 3

Subtracting equation 3 from equation 2 we get;

0.8a+0.95o-(0.8a+0.8o)=9.55-8.8\\\\0.8a+0.95o-0.8a-0.8o=0.75\\\\0.15o=0.75

Dividing both side by 0.15 we get;

\frac{0.15o}{0.15}=\frac{0.75}{0.15}\\\\o=5

Substituting the value of o in equation 1 we get;

a+o=11\\\\a+5=11\\\\a=11-5=6

Hence Harry buys 6 apples and 5 oranges at the store.

3 0
3 years ago
What is the product of -1 3/8 and 2 4/5?
kati45 [8]
-1 3/8 and 2 4/5
-1 15/40 and 2 32/40
1 17/40
I hope that helps you!
7 0
3 years ago
Note that the right triangles with sides equal to 5, 12, 13 and 9, 12, 13 both have a side equal to 12. using this fact find the
kondor19780726 [428]
There is a mistake 9,12,13 is not a right triangle. but 9,12,15 is. IF you use this triangle instead, then the area of the 13,14,15 triangle is the sum of the area of the other two triangles.
6 0
3 years ago
Write a real world problem that you would represent with the equation 4x+5=37.
umka2103 [35]
If there were 37 apples. One of your friends took 5 apples. You divided the leftover apples and gave it to your four friends. How many apples did each of the four friends get?

x=8
37-5=32
32/4=8.
8 0
3 years ago
Find the distance between the points (10,10) and (–5,–5).
Eddi Din [679]

Answer:

Distance= 21.21

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • X+3y=-5<br> 4x-y=6<br><br> solve by elimination please
    10·1 answer
  • The qestion is the picture​
    10·2 answers
  • Until a train is a safe distance from the station it must travel at 5 m/s. Once the train is on open track it can speed up to 45
    15·2 answers
  • The amount y (in cups) of flour is proportional to the number x of eggs in a recipe. The recipe calls for 6 cups of flour for ev
    13·1 answer
  • What is 9x +9= 9x + I really need help !!
    5·2 answers
  • Can someone help me please
    9·1 answer
  • How do I write 3(x+2) in the simplest form
    8·2 answers
  • Select the correct answer. Cole’s age is 3 years less than his sister Tina’s age, t. If Cole is 18, which equation represents th
    11·1 answer
  • Tomás found the area of a rectangle to be 1/6 square inch. Which could be the sidelengths of the rectangle?
    6·1 answer
  • The values in the table represent a linear function what is the common difference of the associated arithmetic sequence x 1 2 3
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!