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KengaRu [80]
3 years ago
11

You hammer a nail into a tree trunk 10 ft above the ground (and the tree is currently 20 ft tall). The tree grows taller at a ra

te of 2 feet per year. How far above ground level will the nail be in 10 years
Mathematics
1 answer:
AnnZ [28]3 years ago
3 0

Answer:

The nail would be 30 feet above the ground in 10 years.    

Step-by-step explanation:

We are given the following in the question:

Height of nail = 10 feet.

The tree grows taller at a rate of 2 feet per year.

Thus, the height of nail can be represented by a linear function:

h(t) = 10 + 2t

where t is the number of years.

We have to find the height of nail in 10 years.

Putting t = 10, we get,

h(10) = 10 + 2(10)\\h(10) = 30

Thus, the nail would be 30 feet above the ground in 10 years.

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Carlos had 7¾ cups of cheese. After making 5 pizzas, he now only has 2 cups of cheese. How much cheese did Carlos use?
Musya8 [376]

Answer:

5 3/4 cups of cheese used for the pizza

Step-by-step explanation:

7 3/4 = 31/4 cups cheese to start

Two cups of cheese remaining.  2 = 8/4 cups

31/4 cups - 8/4 cups = 23/4 cups used for the pizza.

23/4 = 5 3/4 cups of cheese used for the pizza

4 0
2 years ago
Michelle is filling out a form and needs to enter her height in meters. She knows that she is 145 centimeters tall. What value s
Viefleur [7K]
The value is 1.45 meters
3 0
3 years ago
Read 2 more answers
Please help me please !!
sweet [91]

Answer:

Acute

Step-by-step explanation:

7² + 9² ? 11²

49 + 81 ? 121

130 is greater than 121, so it is an acute triangle

8 0
3 years ago
A cheetah can travel up to 29 meters per second.what is the cheetahs speed to the nearest tenth in miles per hour? (1 mile=1690
Ray Of Light [21]
 64.87=64.9 mph
I think I'm not so familiar with meters.
1 mps (meters per second) = about 2.23 mph (miles per hour) 
Therefore, 29 x 2.23=64.8712
Rounded to the nearest tenth and it is 64.9.

3 0
3 years ago
A retail variety store that advertises extensively by mail circulars expects a sale with 20% probability. Suppose 30 prospects a
KIM [24]

Answer:

The expected number of sales of this store from this sample of 30 is 6.

Step-by-step explanation:

For each prospect, there are only two possible outcomes. Either there is a trade, or there is not. Prospects are independent of each other. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

A retail variety store that advertises extensively by mail circulars expects a sale with 20% probability.

This means that p = 0.2

Suppose 30 prospects are randomly selected from a city-wide mailing.

This means that n = 30

What is the expected number (mean) of sales of this store from this sample of 30?

E(X) = np = 30*0.2 = 6

The expected number of sales of this store from this sample of 30 is 6.

4 0
3 years ago
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