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Gnoma [55]
2 years ago
7

Keith earns $42.00 in 3 hours. How much would he earn in 10 hours? A. $135.00 B. $140.00 C. $84.00 D. $112.00

Mathematics
2 answers:
xeze [42]2 years ago
7 0
The answer is B. $140
Musya8 [376]2 years ago
3 0

Answer:

B.$149.00

Step-by-step explanation:

=$42.00÷3=$14.00

=$14.00×10=$140.00

<em>I</em><em>m</em><em> </em><em>s</em><em>o</em><em>r</em><em>r</em><em>y</em><em> </em><em>i</em><em>f</em><em> </em><em>t</em><em>h</em><em>i</em><em>s</em><em> </em><em>n</em><em>o</em><em>t</em><em> </em><em>h</em><em>e</em><em>l</em><em>p</em><em>f</em><em>u</em><em>l</em><em>l</em>

Have a nice day

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The mean height of an adult giraffe is 18 feet. Suppose that the distribution is normally distributed with standard deviation 0.
Klio2033 [76]

Answer:

1. the probability that giraffe will be shorter than 17 feet tall is equal to 0.1056

2. the probability that a randomly selected giraffe will be between 16 and 19 feet tall is equal to 0.8882

3. the the 90th percentile for the height of giraffes is 19.024

Step-by-step explanation:

To calculate the probability that a giraffe will be shorter than 17 feet tall, we need to standardize 17 feet as:

z=\frac{x-m}{s}

Where x is the height of the adult giraffe, m is the mean and s is the standard deviation, so 17 feet is equivalent to:

z=\frac{17-18}{0.8}=-1.25

Now, the probability that giraffe will be shorter than 17 feet tall is equal to P(z<-1.25). Then, using the standard normal distribution table, we get that:

P(z

At the same way, 16 and 19 feet tall are equivalent to:

z=\frac{16-18}{0.8}=-2.5\\z=\frac{19-18}{0.8}=1.25

So, the probability that a randomly selected giraffe will be between 16 and 19 feet tall is equal to:

P(-2.5

Finally, to find the the 90th percentile for the height of giraffes, we need to find the value z that satisfy:

P(Z

Now, using the standard normal distribution table we get that z is equal to 1.28. Therefore, the height x of the giraffes that is equivalent to 1.28 is:

z=\frac{x-m}{s} \\1.28=\frac{x-18}{0.8} \\x=(1.28*0.8)+18\\x=19.024

it means that the the 90th percentile for the height of giraffes is 19.024

4 0
3 years ago
Before a sale, an item’s price was $28.00. After the sale discount the price became $21.00. What was the percent of the sale dis
NARA [144]
The discount was 25% off use 21/28 which is 75 percent of what it was before. 25 percent off.
4 0
3 years ago
Luke’s basketball team went to an amusement park at the end of the season. The cost of the admission for 5 coaches and 12 player
Finger [1]

Answer:

The admission cost for each player was <u>22.50</u>.

Step-by-step explanation:

Given:

Luke’s basketball team went to an amusement park at the end of the season.

The cost of the admission for 5 coaches and 12 players was 407.50.

The admission cost for each coach was 27.50.

Now, to find the admission cost for each player.

Total admission cost = 407.50.

Number of coaches = 5.

Admission cost for each = 27.50.

So, the cost of admission of all coaches:

27.50\times 5

=137.50.

Then, we deduct the cost of admission of all coaches from the total admission cost:

407.50-137.50

=270.

<em>Remaining cost = 270.</em>

Number of player = 12.

Now, to get the admission cost for each player we divide the remaining cost  by number of players:

270\div 12

=22.50.

Therefore, the admission cost for each player was 22.50.

7 0
2 years ago
Combine and simplify these radicals.<br> √3-√16<br><br> A 3√4<br> B 3√16<br> C 16√3<br> D 4√3
Tom [10]

Answer:

A 3√4

Step-by-step explanation:

The 3 stays and 16 gives you 4 and 4 becomes positive

8 0
1 year ago
What is the length of a diagonal of a rectangular picture whose sides are 12 inches by 17 inches? Round to the nearest tenth of
Nostrana [21]

Answer: d≈20.81in

Hope this helpsss!!!

6 0
3 years ago
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