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zvonat [6]
3 years ago
13

Matthew rakes leaves to earn money. The points in this graph represent the total amount of money Matthew earns based on the numb

er of hours he rakes leaves. Matthew wants to purchase sneakers that costs $48. How many hours does Matthew need to rake leaves to earn enough money to buy the sneakers?\
Mathematics
2 answers:
defon3 years ago
8 0

Answer:

it will take him 6 hours to earn enough money to buy the sneakers

Step-by-step explanation:

I took the test

Svet_ta [14]3 years ago
4 0

Answer:

The answer should be 6

Step-by-step explanation:

I took the test too

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Find the values of m and b that make the following function differentiable.
KengaRu [80]

f(x)=\begin{cases}x^2&\text{for }x\le2\\mx+b&\text{for }x>2\end{cases}

In order to be differentiable everywhere, f must first be continuous everywhere, which means the limits from either side as x\to2 must be the same and equal to f(2). By definition, f(2)=2^2=4, and

\displaystyle\lim_{x\to2^-}f(x)=\lim_{x\to2}x^2=4

\displaystyle\lim_{x\to2^+}f(x)=\lim_{x\to2}(mx+b)=2m+b

so we need to have 4m+b=4.

For f to be differentiable at x=2, the derivative needs to be continuous at x=2, i.e.

\displaystyle\lim_{x\to2^-}f'(x)=\lim_{x\to2^+}f'(x)

We then need to have

\displaystyle\lim_{x\to2}2x=\lim_{x\to2}m\implies\boxed{m=4}

Then

2m+b=4\implies\boxed{b=-4}

7 0
3 years ago
The Dynaco Manufacturing Company produces a product in a process consisting of operations of five machines. The probability dist
TEA [102]

Answer:

Answer is given below.

Step-by-step explanation:

Machine Breakdown   Probability      Cumulative-Distribution-Rang         Rang

Per week    

0                                     0.10                              0.10                                    0-9

1                                     0.10                             0.20                                   10-19

2                                     0.20                             0.40                                  20-39

3                                     0.25                              0.55                                   40-64

4                                    0.30                             0.95                                      65-94

5                                       0.5                              1.0                                      95-99

8 0
3 years ago
20. A shoe store owner had an employee record the shoe sizes purchased by customers during one hour on two different days. The
Ulleksa [173]

Answer:

The correct option is C. 9

Step-by-step explanation:

From the graphs shown in the attached file we can see that the maximum number of shoes bought were of size 9. On both days the number of size 9 shoes bought was 5 which was the highest number of shoes bought for any size shoe. Therefore since size 9 sell the most on both days the owner should stock most of size 9 shoes in the store's inventory.

3 0
3 years ago
The safe load for a certain horizontal beam used to hold up part of a building varies inversely as the length between the
Misha Larkins [42]

The statement is true.

Answer: Option 1.

<u>Explanation:</u>

An horizontal beam is constantly flat and has a consistent cross-segment. Notwithstanding normal shaft parameters, bar has the accompanying properties: Direction. A flat shaft might be situated either along the worldwide X-hub or worldwide Y-pivot.

A horizontal beam is used to hold a building up right and to give the support to the building. But the length of the horizontal beam differs in an inverse way between the supports.

6 0
3 years ago
Margie threw a ball upwards while standing on a platform 65ft above the ground. The trajectory follows the​ equation:h(t)=-1.5t^
EastWind [94]

Answer:

  • 14 seconds

Step-by-step explanation:

Given equation is representing the graph of parabola which opens down and its pick is its vertex

<u>The vertex is calculated by vertex formula:</u>

  • x = -b/2a for the equation y = ax² + bx + c

<u>In our case t is the vertex and its value is:</u>

  • t = -42/(-1.5*2) = 42/3 = 14 seconds

7 0
3 years ago
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