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
loris [4]
4 years ago
7

Help plz dont know the answer

Mathematics
1 answer:
stealth61 [152]4 years ago
6 0

Answer is B

How I got is because I had to first figure out what 40 seconds worth of heartbeats are equal to. 80 - 48 is 32 divided by 2 is 16. Next, I added 48 and 16 which got me 64. All I had to do next was to add 80 and 16 because the rate of heartbeats per 10 seconds is 16. 80+16=96 and thats how I figured that the answer is B

You might be interested in
What is the equation of the line, in slope-intercept form, that passes through (3, -1) and (-1,5)?
romanna [79]
m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}} = \frac{5 - (-1)}{-1 - 3} = \frac{5 + 1}{-4} = \frac{6}{-4} = \frac{3}{-2} = -1\frac{1}{2}
  y - y₁ = m(x - x₁)
y - (-1) = -1¹/₂(x - 3)
  y + 1 = -1¹/₂(x) + 1¹/₂(3)
  y + 1 = -1¹/₂x + 4¹/₂
      - 1              - 1
         y = -1¹/₂x + 3¹/₂

  4x + y - 2 = 0
            + 2 + 2
       4x + y = 2
4x - 4x + y = -4x + 2
               y = -4x + 2
         y - y₁ = m(x - x₁)
      y - (-3) = -4(x - 4)
         y + 3 = -4(x) + 4(4)
         y + 3 = -4x + 16
             - 3            - 3
               y = -4x + 13

  2x - 3y - 5 = 0
             + 5 + 5
2x - 2x - 3y = -2x + 5
             -3y = -2x + 5
              -3         -3
                y = ²/₃x - 1²/₃
       y - (-3) = -1¹/₂(x - 4)
          y + 3 = -1¹/₂(x) + 1¹/₂(4)
          y + 3 = -1¹/₂x + 6
              - 3              - 3
                y = -1¹/₂x + 3

8 0
4 years ago
Read 2 more answers
NO LINK I WILL MARK BRAINLIEST
kkurt [141]

Answer:

13.5

Step-by-step explanation:

6 0
3 years ago
Peter drove 57 miles down the coastline in 3 hrs what was the average speed
Gala2k [10]

Answer:

19mph

Step-by-step explanation:

Divide 57 by 3 and you'll get 19mph - the average speed.

6 0
3 years ago
4 is what percent of 550
vladimir2022 [97]
If you want to evaluate what percent of 550 is 4, you can do this in two following steps.<span>
<span>First, you have to write it as a fraction: 4</span>/550.
Second, you have to transform this fraction to percent: (4/550)*100%.

(4/550)*100% = 0.0072727272727273*100% = 0.727%

<span>The correct result is </span>0.727%.</span>
6 0
3 years ago
On a map with a scale of 2 cm = 1 km, the
Hunter-Best [27]

Answer:

A. 2.3km

Step-by-step explanation:

Since 2cm = 1km

4.6cm = xkm

xkm = 4.6 x 1 / 2

= 2.3km

5 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELPPPPP FASSSTT
    11·2 answers
  • Use substitution method <br> 8x=-2y-10<br> 2x=4y
    13·1 answer
  • Draw a picture of a figure that has more than three lines of symmetry draw the lines of symmetry
    15·1 answer
  • * 16. Solvex + 1 = 50<br><br>​
    12·1 answer
  • 5x + 5<br><br> 18x + 6<br><br> 4x - 7<br><br> 10x - 35<br><br> 32x + 24y<br><br> 30x - 40
    5·1 answer
  • Seventeen thousand in standard form
    11·2 answers
  • The length of a rectangular field is 6 feet less than 5 times its width.
    7·1 answer
  • Find the area of following rhombuses. Round your answers to the nearest tenth if<br> necessary.
    9·1 answer
  • Help with geometry !!!!!!!!!!!
    13·2 answers
  • 7. An aquarium is shown below. The
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!