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
mixer [17]
3 years ago
12

An object travels 8 miles in 20 minutes at a constant speed. What is the

Mathematics
1 answer:
strojnjashka [21]3 years ago
6 0

Answer: 24miles/hour

Step-by-step explanation: Speed is the change in distance of a body with respect to time.

Speed = Distance/tIme

Given parameters

Distance = 8miles

TIME = 20minutes

Convert minutes to hour

since 60minutes = 1hr

20 min = x

cross multiply

20 = 60x

x = 20/60

x = 1/3

Hence 20mins = 1/3 hr

Speed = 8miles/(1/3)hr

speed = 8 miles * 3/1 hr

speed = 24 miles/hr

You might be interested in
Consider the function f(x) = 6sin(x^2) on the interval 0 ≤ x ≤ 3.
Vitek1552 [10]
<span> a) F' = 6 sin(x^2) = 0
x^2 = pi
x = sqrt(pi)

b) Fmax = F(1) + integral [1, pi] f(x) dx = 9.7743 </span>
4 0
3 years ago
Read 2 more answers
The promising alternative energy sources currently under development are fuel cell technology and large-scale solar energy power
Mumz [18]

Answer:

Step-by-step explanation:

a) Denote the event of commercially availability of f_uel cell technology as F_, commercial availability of solar power technology as S

Write the probability of energy supplied by these energy sources in the next 10 years  

P(energy supplied) = P(S ∪ F) -----(1)

Rewrite eqn (1)

P(energy supplied) = P(S) + P(F) - P(F) P(S) ----(2)

substitute 0.85 for P(S) and 0,7 for P(F) in eqn (2) to find the probability of energy supplied by these energy sources

P(energy supplied) = 0.85 + 0.7 - (0.7 * 0.85)

= 0.85 + 0.7 - (0.595)

= 1.55 - 0.595

= 0.955

Therefore, the probability that there will be energy supplied by these two alternative sources in the next 10 years is 0.955

B) write the probability of only one source of energy available

P(only one source of energy available) = P(\bar F S) ∪ P( \bar S F) ---(3)

Rewrite the equation (3)

P(only one source of energy available) =

=P(\bar F S)+P(\bar S F)\\\\=\{[1-P(F)]P(S)+[1-P(S)]P(F)\}---(4)

=\{[1-0.7]0.85+[1-0.85]0.7\}\\\\=0.255+0.105\\\\=0.36

Therefore,The probability that only one of the two alternative energy sources will be commercially viable in the next 10 years is 0.36

4 0
3 years ago
Which of the following inequali
Maru [420]

Answer:

3<5

Step-by-step explanation: dont see a picture but i have an example

3 0
3 years ago
If the shaded cross sections of the solids have the same area, which of the following corresponds to the value of a: the side le
Nikolay [14]

Answer:

4\sqrt{\pi}

Step-by-step explanation:

  • The cross section of a sphere is a circle with area  \pi r^2, where radius is given as 4
  • The cross section of the cube is a square with area  a^2, where a is side length of square

The circle area = the square area. Thus we have:

\pi r^2 = a^2 \\\pi(4)^2=a^2\\16\pi=a^2\\\sqrt{16\pi}=a\\ a=\sqrt{16} \sqrt{\pi} \\a=4\sqrt{\pi}

6 0
3 years ago
Read 2 more answers
0.4 divided by 0.08=
NISA [10]

Answer:

The answer is five (5)

Step-by-step explanation:


3 0
3 years ago
Other questions:
  • The horizontal distance of E is 9 units to the east of point F. Determine the coordinates of F if the coordinates of E are (3,8)
    9·1 answer
  • Shannon says the two expressions below are equivalent. Is she correct? Explain why or why not? 2(3a - 2) + 4a and 10a - 2
    14·2 answers
  • Is PQR=STU if so name the congruence postulate that applies
    14·2 answers
  • Find the measure of the larger angle.
    8·2 answers
  • A car is traveling along a test track in the desert at a constant rate of 85 feet per second The test track has a length of 10,0
    9·1 answer
  • Sixty-eight students, out of 100 surveyed, chose pizza as their favorite lunch item. If the school has 1250 students, how many s
    13·1 answer
  • Write an equation of line that passes through the points (4,3) land (1, 2) in point-slope form.
    5·1 answer
  • Which graph represents this system? y=5x+3 3 y=zx-1​
    9·2 answers
  • 156 ÷789<br> what the answer
    6·2 answers
  • Complete the description of how to transform the graph of f(x)=x2 to obtain the graph of the related
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!