answer.
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
Cerrena [4.2K]
2 years ago
11

Bartolo is running a race. He determines that if he runs at an average speed of 15 feet/second, he can finish the race in 6 seco

nds. If he runs at an average speed of 18 feet/second, he can finish the race in 5 seconds.
Bartolo thinks that the fastest he can run is 30 feet/second. How long would it take him to finish the race at this speed?

A.
2 seconds
B.
2.5 seconds
C.
3 seconds
D.
3.5 seconds
Mathematics
1 answer:
Gelneren [198K]2 years ago
7 0

Answer:

C

Step-by-step explanation:

the distance is 15•6 = 18•5 = 90 feet

so, time needed = 90/30 = 3 second

You might be interested in
What is the horizontal asymptote of f (x) =StartFraction negative 2 x Over x + 1 EndFraction? y = –2 y = –1 y = 0 y = 1
miv72 [106K]

Answer:

  y = -2

Step-by-step explanation:

Any asymptotes of a rational function will be described by the quotient of the numerator and denominator (excluding any remainder).

  f(x)=\dfrac{-2x}{x+1}=-2+\dfrac{2}{x+1}

The horizontal asymptote is ...

  y = -2

8 0
2 years ago
Read 2 more answers
A rectangular solid with a square base has a volume of 5832 cubic inches. (Let x represent the length of the sides of the square
Aleks04 [339]

Answer:

a) 18 in x 18 in x 18 in

b) S = 1944\ in2

Step-by-step explanation:

a) Let's call 's' the side of the square base and 'h' the height of the solid.

The surface area is given by the equation:

S = 2s^2 + 4sh

The volume of the solid is given by the equation:

V = s^2h = 5832

From the volume equation, we have that:

h = 5832/s^2

Then, using this value of h in the surface area equation, we have:

S = 2s^2 + 4s(5832/s^2)

S = 2s^2 + 23328/s

To find the side length that gives the minimum surface area, we can find where the derivative of S in relation to s is zero:

dS/ds = 4s - 23328/s^2 = 0

4s = 23328/s^2

4s^3 = 23328

s^3 = 23328/4 = 5832

s = 18\ inches

The height of the solid is:

h = 5832/(18)^2 = 18\ inches

b) The minimum surface area is:

S = 2(18)^2 + 4(18)(18)

S = 1944\ in2

8 0
2 years ago
How many grams of salicylic acid should be added to 75 g of a polyethylene glycol ointment to prepare an ointment containing 6%
Alla [95]

Answer:

4.79 g

Step-by-step explanation:

mass of salicylic acid = ??

Mass of polyethylene = 75 g

% w/w concentration = 6% w/w

Let the mass of  salicylic acid be x

Let the mass of solution = 75 + x

from

% w/w = mass of solute/ mass of solution * 100

Hence concentration of salicylic is;

6 = (x/75 + x) * 100

6/100 = x/75 + x

0.06 (75 + x) = x

4.5 + 0.06x =x

4.5 = x-0.06x

x = 4.5/0.94

x= 4.79 g

6 0
2 years ago
A steel plant has two sources of ore, source A and source B. In order to keep the plant running, at least three tons of ore must
masha68 [24]
The correct answer for the question that is being presented above is this one: "C) 3 tons from source A, 0 tons from source B." The tons of ore from each source should be processed each day to maximize the amount of steel produced is that <span>C) 3 tons from source A, 0 tons from source B </span>
5 0
2 years ago
Read 2 more answers
The pizza shop also sells artwork by local artists. For
Svetach [21]

Answer:

$25.50

Step-by-step explanation:

15% of 30

.15 times 30

(.15 times 30) subtracted from 30

25.5

4 0
2 years ago
Read 2 more answers
Other questions:
  • You earn 13.76/hr part-time and work 10hrs/wk. your deductions are FICA(7.65%), federal tax withholding (9.8%) and state tax wit
    11·2 answers
  • The surface areas of two similar figures are 25 in2 and 36 in2. If the volume of the smaller figure is 250 in3, what is the volu
    14·2 answers
  • Tickets to a school play cost $2 if bought in advance, and $3 if bought at the door. By selling all 400 of their tickets, $1030
    10·2 answers
  • Clarissa's income puts her in the bottom tax bracket (10%) last year. During the same year, she earned $250 in dividends and $75
    8·1 answer
  • Drag the values to order them from least to greatest, with the least at the top. Item 2 moved to position 3. 79 − − √ + 63 − − √
    7·1 answer
  • When an apple is dropped from a tower 256 feet high, the function h(t) =-167 +256 models the height of the
    7·1 answer
  • Water flows into a swimming pool at the rate of 8.0 gal/min. The pool is 16 ft wide, 32 ft long and 8.0 ft deep. How long does i
    12·1 answer
  • What are all the expressions that equivalent to 2(15 - 20d + 5c)
    11·2 answers
  • Lucinda began the year with a certain balance in her bank account. During the first month, she made 3 withdrawals of $25 each. D
    8·2 answers
  • Give the most specific name for each quadrilateral.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!