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
AlekseyPX
3 years ago
10

Joanna ran a mile in physical education class. After resting for one hour, her heart rate was 60 beats per minute. If her heart

rate decreased by 2/5, what was her heart rate immediately after she ran the mile?
Mathematics
1 answer:
Ugo [173]3 years ago
4 0
So, if 60 beats was decreased by 2/5 before, we know that 60 beats = 3/5 of her heart rate after she ran the mile.

(Because 1 - 2/5 = 3/5)

So, 3/5 = 60, and we're trying to find 1.

So I would first divide both sides by 3.

3/5 = 60
/3      /3

1/5 = 20

Then multiply both sides by 5.

1/5 * 5 = 20 * 5

1 = 100

So her heart rate was 100 beats per minute immediately after she ran the mile.
You might be interested in
In a recent survey of favorite sodas 7 students chose coke. If these students represent 17.5% of the students surveyed, how many
katovenus [111]

Answer:

40

Step-by-step explanation:

7 = 17.5% × Y

STEP 2 7 =

17.5

100

× Y

Multiplying both sides by 100 and dividing both sides of the equation by 17.5 we will arrive at:

STEP 3 Y = 7 ×

100

17.5

STEP 4 Y = 7 × 100 ÷ 17.5

STEP 5 Y = 40

8 0
3 years ago
What is equivalent to 5(8d)
kati45 [8]

Answer: ( 2 + 3 ) ( 8d )

Step-by-step explanation:

There are multiple possible answers and I'm not sure if you're missing part of the question.

Correct me if I am incorrect.

8 0
2 years ago
Read 2 more answers
Word problem: Ms.Perez often gives a short one problem quiz during her 48 minute class. If a student is out of the room at the t
shepuryov [24]
1/15 because it’s 1 in every 15 minutes.
8 0
3 years ago
What is the lcm of 6 and 4
IceJOKER [234]

12 The least common multiple of 6 and 4 is 12

3 0
3 years ago
Read 2 more answers
Help please)))))))))))))))))))
timurjin [86]
The giraffe (using the ruler) is 11 cm.

1 cm : 50 cm

Multiply both sides by 11.

11 cm : 550 cm 

There are 0.01 meters in 1 centimeter.

Multiply 550 cm by 0.01.

(550)(0.01) = 5.5

The giraffe's real length is 5.5 meters.
5 0
2 years ago
Other questions:
  • PLS HELP ASAP!!!!!!!!!!!!!!
    8·1 answer
  • Help me I’m stuck on this
    9·1 answer
  • How do i find the surface area of the sphere??
    8·1 answer
  • Which are vertical angles to 4?
    12·1 answer
  • Estimate the following product in scientific notation, and then select best answer for the products power of 10.
    14·1 answer
  • HelPPPPP PLSSSSSSSSSSSSSSSSSSSSSSSS page 106 plsssss :(
    14·1 answer
  • Can someone help me with this i don’t understand at all
    10·1 answer
  • Need help this is a hard concept for me
    15·1 answer
  • if (2,3) bisects the line segment joining the points (a,6) and (8,b),then what are the values of a and b​
    15·1 answer
  • Convert the function from vertex form to standard form. <br> -1/2(x + 2)^2 - 3
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!