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balandron [24]
3 years ago
12

it takes 21 minutes for 5 people to paint 7 walls. how many minutes does it take 3 people to paint 10 walls

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
8 0
21/7=3mins per wall with 5 people.
Because we assume that all of the people paint at the same rate, 3 X 5=15 mins for one person working alone.
15/3=5 mins per wall with 3 people X 10 people= 50 mins for 3 people to paint 10 walls.


The answer is 50 mins.
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Use the graph to find the following.
poizon [28]

The values of x at wich F(x) has local minimums are x = -2 and x = 4, and the local minimums are:

  • F(-2) = -3
  • F(4) = -5

<h3>What is a local maximum/minimum?</h3>

A local maximum is a point on the graph of the function, such that in a close vicinity it is the maximum value there. So, on an interval (a, b) a local maximum would be F(c) such that:

c ∈ (a, b)

F(c) ≥ F(x) for ∀ x ∈ [a, b]

A local minimum is kinda the same, but it must meet the condition:

c ∈ (a, b)

F(c) ≤ F(x) for ∀ x ∈ [a, b]

A) We can see two local minimums, we need to identify at which values of x do they happen.

The first local minimum happens at x = -2

The second local minimum happens at x = 4.

B) The local minimums are given by F(-2) and F(4), in this case, the local minimums are:

  • F(-2) = -3
  • F(4) = -5

If you want to learn more about minimums/maximums, you can read:

brainly.com/question/2118500

3 0
2 years ago
The price of a television decreased from $275 to $190 during a clearance sale. What is the percent of decrease in the price? Rou
just olya [345]
195=275-275p -275 -27 -80=-275p You do -80 divided by -175 which is 0.45 and your answer is C45%.
3 0
3 years ago
Simplify the expression. 4√ 6+ 5√6
pshichka [43]

Answer:

9√6

Step-by-step explanation:

4√6+5√6

=(4+5)√6

=9√6

5 0
2 years ago
Franklin rode his bike 6 5/6 miles on Tuesday. He also rode his bike 5 5/6 miles on Thursday. What is the difference between the
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The difference = miles rode on Tuesday - miles rode on Thursday.
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3 0
3 years ago
What inequalities are shown by this graph?​
kramer

Answer:

the answer is going to be

x>27

8 0
3 years ago
Read 2 more answers
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