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
Afina-wow [57]
2 years ago
15

A student on the track team runs 45 minutes each day as a part of her training. She begins her workout by running at a constant

rate of 8 miles per hour for 푎 minutes, then slows to a constant rate of 7.5 miles per hour for 푏 minutes. Which equation describes the relationship between the distance she runs in miles, 퐷, and her running speed, in miles per hour?
Mathematics
1 answer:
jeka57 [31]2 years ago
6 0

D = RT would be the fundamental equation to answer this, which is

Distance in D

Rate is R (speed)

It is now.

We can determine the individual distances for the two legs of the whole to determine the overall distance D.

Initial Leg:

R = 8

T = a

D = 8a

8(45 – b) + 7.5b =D

What is the formula for rate and distance?

Use the formula d = st to determine speed, distance, or time. Distance is equal to speed multiplied by time. Given two known numbers, the Speed Distance Time Calculator can solve for the unknown sdt value.

Units of seconds (s), minutes (min), hours (hr), or hours, minutes, and seconds can be used to input or solve for time (hh:mm:ss). Time format shortcuts are shown below.

Use the formula d = st, or distance equals speed times time, to find the distance.

Distance Equals speed x time

Since both reflect a certain amount of distance per unit of time, such as miles per hour or kilometers per hour, rate and speed are comparable. If speed s and rate r are equal, then r = s = d/t. The corresponding formula is d = rt, which denotes Rate times time are equivalent to distance.

Distance = Rate x Time

Use the speed formula, s = d/t, which states that speed is equal to distance divided by time, to solve for speed or rate.

speed equals distance/time.

Use the time formula, t = d/s, which states that time is equal to distance divided by speed, to solve for time.

Time = Speed/Distance

Learn more about rate and distance brainly.com/question/1090517

#SPJ9

You might be interested in
Kyle’s account was overdrawn so that the account showed $9 less than zero. Kyle deposited $25 in the account. The next day he wi
SOVA2 [1]
X=(-9+25)-10 I think
7 0
3 years ago
Read 2 more answers
Plssss help (ZOOM IN TO SEE FULL PIC)
MA_775_DIABLO [31]

Answer:

d and e

Step-by-step explanation:

IV must have a pos x value and a negative y value

we can eliminate everything except d e & f

f is wrong bc it has a positive 3 value

5 0
3 years ago
Simplify: i) (a + b)(5a – 3b) + (a – 3b)(a – b) ii) (a – b) (a2 + b2 + ab) – (a + b) (a2 + b2 – ab) iii) (b2 – 49) (b + 7) + 343
marin [14]

Answer:

plz mark brainliest✌️✌️

8 0
3 years ago
Solve for aaa: a-\left(-3.75\right)=6.11a−(−3.75)=6.11a, minus, left parenthesis, minus, 3, point, 75, right parenthesis, equals
Ganezh [65]

Answer:

Step-by-step explanation:

                              To isolate <em>a</em>, we add -3.75 to both sides.

                                              <em>a</em>-(-3.75)=6.11

                                   <em>a</em>-(-3.75)<u><em>+(-3.75)</em></u>=6.11<u><em>+(-3.75)</em></u>

                                                           <em>a</em>=6.11<em><u>+(-3.75)</u></em>   Simplifying, we get:  

<em>a</em>=2.36

(I got this from khan)

4 0
3 years ago
Write an equation if the line that passes through (0,-3) and (3,3) .
liq [111]

Answer:

y = 2x - 3

Step-by-step explanation:

y = mx + b

m = (y2-y1)/(x2-x1)

m = (3-(-3))/(3-0)

m = 6/3

m = 2

y = mx + b

y = 2x + b

3 = 2(3) + b

3 = 6 + b

b = -3

therefore

y = 2x - 3

6 0
3 years ago
Other questions:
  • Solve this please<br><img src="https://tex.z-dn.net/?f=%20%20logx%20%2B%20%20log%20%5Cfrac%7Bx%20-%202%7D%7B21%7D%20%3D%203%20lo
    11·1 answer
  • miss holman gave a 90 cent tip to a waitress for serving a meal costing $6.00. what is the percent of the bill was her tip?
    5·2 answers
  • 5. Which function would have the point (0,0) on its graph?
    7·1 answer
  • Quadrilateral FLAG has coordinates F(1,5), L(6,3), A(3,-1), and G(-2,1). Which
    11·2 answers
  • Solve for x and show work<br><br> -2(8x - 1) = 4(3x + 4)
    9·2 answers
  • Aluminium has a density of 2900 kg/mº. A construction company
    11·1 answer
  • What is the depth of the soup ( the area shaded) 20cm is the diameter?
    14·1 answer
  • 5.
    12·1 answer
  • Dave's favorite baseball team has won 10 fewer games than Kimiko's favorite baseball team. Write an algebraic expression for the
    5·1 answer
  • HELP PLEASE!!!A 2-column table with 5 rows. Column 1 has entries 25 percent, 25 percent, 25 percent, 25 percent, Total 100 perce
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!