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
never [62]
3 years ago
12

During her 8th week of training a woman ran 20 total miles,during her 13th week of training she ran 33 total miles.

Mathematics
1 answer:
allochka39001 [22]3 years ago
4 0
So 8th week:20
13th week:33
13-8=5
33-20=13
grouth of 13 per 5 weeks or about 2.6 increse per week

so if she ran 37 miles then
37-33=4
so an increse of 4 or about 1.5 more weeks soweek 14.5

another way is to find the ratio of miles to weeks
20/8=2.5
33/13=2.54
average 2.5 and 2.54 and get 2.52
37/x=2.52
solve for x
37/x=2.52
multiply both sides by x
37=2.52x
divide both sides by 2.52
14.68=x
she is on her 14.68 week
you might want to round up

You might be interested in
Please help! Thank you
Temka [501]

Answer:

b. the radio of feet to inches

4 0
2 years ago
Need help on these math questions. please and thank u
Svetach [21]

9514 1404 393

Answer:

  a) x = -3

  b) y = (28/27)x -27

Step-by-step explanation:

a) College street has a slope of 0, so is a horizontal line. 2nd Ave is perpendicular, so is a vertical line, described by an equation of the form ...

  x = constant

For 2nd Ave to intersect the point (-3, 1), the constant must match that x-coordinate. The equation is ...

  x = -3

__

b) Since Ace Rd is perpendicular to Davidson St, its slope will be the opposite reciprocal of the slope of Davidson St. The slope of Ace Rd is ...

  m = -1/(-27/28) = 28/27

Using the point-slope equation for a line, we can model Ace Rd as ...

  y -y1 = m(x -x1)

  y -1 = (28/27)(x -27)

  y = (28/27)x -27

4 0
3 years ago
Please help I don’t understand how to solve this !
Ket [755]

Answer:

x = 30

Step-by-step explanation:

x + 2x + 3x = 180

             <u>6x</u> = <u>180</u>

              6       6

               x =  30

8 0
2 years ago
The lifetimes of 10,000 watch batteries are normally distributed the mean lifetime is 500 days the standard deviation is 60 days
Lelu [443]
Given:
μ = 500 days, the population mean
σ = 60 days, the population standard deviation

Therefore
μ + σ = 560
μ - σ = 440
μ + 2σ = 620
μ - 2σ = 380
μ + 3σ = 680
μ - 3σ = 320

The figure shown below illustrates the normal distribution
About 68% of the total area lies in x = (μ-σ, μ+σ)
About 95% of the total area lies in x = (μ-2σ, μ+2σ)
About 99.7% of the total area lies in x = (μ-3σ, μ+3σ).

7 0
3 years ago
(x^2-1)(4x^3-3x^2+5)
emmainna [20.7K]

Anwser: 4x^5-3x^4-4x^3+8x^2-5

Step-by-step explanation:

yes

6 0
1 year ago
Other questions:
  • Carlos didn't earn enough for the last apartment he was looking at, so he is still searching. He found one that costs $625 per m
    15·1 answer
  • Name all the angles you can conclude have greater measures of 9
    12·1 answer
  • The coordinates of the vertices of a polygon are (−2, −2) , (−2, 3) , (2, 4) , (3, 1) , and (0, −2) .
    8·1 answer
  • Can some one please help me with these five questions
    15·1 answer
  • lori finds her company's profit by subtracting the company's costs from its revenue. the profit loris company is represented by
    13·1 answer
  • Please help asap i’ll give u a brainliest if u get the right answer
    7·1 answer
  • Which is the best estimate for the height of the candle after 1 hour?
    15·1 answer
  • Is x=2y a proportional relationship??
    5·1 answer
  • Which equation is equivalent to the formula m = ca? a = cm a equals m over c c = am c equals a over m.
    12·2 answers
  • A rectangle has an area of 65 cm² and a length of<br> 13 cm. Find the perimeter of this rectangle.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!