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pishuonlain [190]
3 years ago
8

Consider the distribution of exam scores graded 0 from 100, for 79 students. When 37 students got an A, 24 students got a B and

18 students got a C. How many peaks would you expect for distribution?
Mathematics
1 answer:
kondor19780726 [428]3 years ago
8 0

Answer:

Three

Step-by-step explanation:

Assuming the grade score from 70 to 100 is A; for grade score from 60 to 69 is B and grade score from 50 to 59 is C. Well it is certain there are three peaks in the distribution of scores

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While exercising, a person's recommended target heart rate is a function of age. The recommended number of beats per minute, y ,
inysia [295]

Answer:

174.25

Step-by-step explanation:

To solve this equation I will assume you are 15 as this is a High School level problem.

1. Plug in 15 for x

-.85*15+187

2. Solve

-.85*15=-12.75

-12.75+187=174.25

4 0
2 years ago
What is the answer for 10.3(3)+9.5(4)=? +38.0
Vikki [24]

multiply and add then subtract. steps are in the picture.

4 0
3 years ago
I dont know how to do any of these problems can someone help me
HACTEHA [7]

Answer:

#7.  JK = 1

Step-by-step explanation:

So all these problems are similar in the fact that you are given three pieces of information and you need to determine x.  Let's look at #7.

We are to find the length JK but we are given it in terms of x.  To find the length, we need to find x.  Using the information we have about KL and JL, we can find this.  Note, the value of JL is 5, and the value of KL is x + 8.

JK + KL = JL

( 2x + 9 ) + ( x + 8 ) = 5

3x + 17 = 5

3x = -12

x = -4

Now that we have the value of x,  we can find the value of JK:

JK = 2x + 9

JK = 2(-4) + 9

JK = -8 + 9

JK = 1

Hence, the length of JK is 1.

Using this same basic idea, you can solve all of these problems.

Cheers.

4 0
3 years ago
Why am i ugly please tell me
DIA [1.3K]

Answer:

your not ugly you have beauty or handsomeness in your own way you just don't show or give effert trust me I used to say that until someone told me what I told you

3 0
2 years ago
Read 2 more answers
What answer to 1+7v+9
Sveta_85 [38]

Hey There!

In order to simplify this expression, you would have to combine the like terms.

9+1 = 10

Nothing else could be done, therefore the answer would be.

7v + 10

Hope this helped!

8 0
3 years ago
Read 2 more answers
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