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3 years ago

10

the equation y=15x+500 represents the amaunt y that lin earns by working for x hours plus a performance bonus. what is lin hourl

y rate

1 answer:

sp2606 [1]3 years ago

6 0

The hourly rate is the slope or $15 in this case.

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Mrs. Blake's bill at a restaurant was $42.75. She wants to leave the waiter an 18% tip. How much will she pay in all, including

svlad2 [7]

The quick way to do this is to multiply the bill by 1, mult. it again by 0.18, and then add the two results together.

Better and faster: Mult. the bill amount ($42.75) by 1.18:

1.18($42.75) = $50.45 (answer)

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3 years ago

In ΔABC, centroid D is on median AM. AD = x + 3 and DM = 2x - 1. Find AM.

nata0808 [166]

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3 years ago

Read 2 more answers

How many one-third packages can the worker make from 20 pounds of cookies?

andreev551 [17]

Answer: 60

Step-by-step explanation:

1/3 means 3 packages per 1 pound

3 x 20 + 60

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3 years ago

B. How many hundreds are in 4362? How many<br> whole hundreds?

zhannawk [14.2K]

Answer:

3

Step-by-step explanation:

4362

3= hundreds place value

So that means there are 3 whole hundreds

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2 years ago

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The weekly earnings of students in one age group are normally distributed with a standard deviation of 47 dollars. A researcher

ELEN [110]

Answer:

Option D) 340

Step-by-step explanation:

We are given the following in the question:

Alpha, α = 0.05

Population standard deviation, σ = $47

Margin of error = 5

95% Confidence Interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

$\text{Margin of error} = z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$5 = 1.96(\dfrac{47}{\sqrt{n}} )\\\\\sqrt{n} = \dfrac{47\times 1.96}{5}\\\\n = 339.443776\\\Rightarrow n \approx 340$

Thus, the correct answer is

Option D) 340

7 0

3 years ago