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elena-14-01-66 [18.8K]
2 years ago
11

Question 4

Mathematics
1 answer:
lukranit [14]2 years ago
5 0

Answer:

Mrs.Harper bought 87.3 key chains which rounds up to 240.075

Step-by-step explanation:

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One cell phone company offers a plan that costs $29.99 and includes unlimited night and weekend
tamaranim1 [39]

Answer: 49.

It's 49 minutes

Step-by-step explanation:

I don't feel like explaining. It's 49 minutes.

8 0
3 years ago
Find the inverse of the relation. Use proper notation. {(8,−1),(−8,−1),(−2,−8),(2,8)} please help!!
tiny-mole [99]

Answer: The inverse relation is { (-1, -8), (-1, -8), (-8, -2), (8, 2) }

The inverse is effectively the opposite of the original relation. It undoes what the original relation does. So we'll swap the x and y values for each given point in the form (x,y). Something like (8,-1) becomes (-1,8). The other points follow the same pattern as well.

6 0
2 years ago
There are 10 students in class and the number of siblings in their families are given by {1,1,1,1,2,3,3,4,4,4}. Consider the exp
Svetllana [295]

Answer:

a. Check the attached image

b. The Pr(Y > 2) = ½

c. The mean is 2.4

d. The standard deviation is: 2.72

e. The exact value is 1 because it is certain from the given data that any probability will fall within that range.

Step-by-step explanation:

a. An image showing the step by step solution is attached.

b. P(Y > 2) = P(3) + P(4)

= 2/10 + 3/10 = 5/10 = ½

c. The mean is 2.4

d. The standard deviation is: 2.72

e. Check the attached image for the steps.

7 0
3 years ago
(7^2)^4= n^8 solve for n
S_A_V [24]

Answer:

n=7

Step-by-step explanation:

(7^2)^4= n^8

We know that a^b^c = a^(b*c)

7^(2*4) = n^8

7^8 = n^8

Since the exponents are the same, the bases must be the same

n=7

4 0
2 years ago
Cark earned grades of 62, 78, 59, and 89 on four tests.<br><br><br>what is the mean of his grades​
serious [3.7K]

Answer:

72

Step-by-step explanation:

mean=average. to get average, you add up the numbers and divide by how many numbers. they add upp to 288 and since theres 4 test grades, divide by 4 to get 72.

4 0
2 years ago
Read 2 more answers
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