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Helen [10]
3 years ago
15

What is the sum? I really need help ASAP

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
5 0

Answer:

im confussed

Step-by-step explanation:

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It is known that for all tests administered last​ year, the distribution of scores was approximately normal with mean 74 and sta
Lunna [17]

Answer: 19.77%

Step-by-step explanation:

Given: Mean : \mu=74

Standard deviation : \sigma = 7.1

The formula to calculate z-score is given by :_

z=\dfrac{x-\mu}{\sigma}

For x= 80, we have

z=\dfrac{80-74}{7.1}\approx0.85

The P-value = P(z>0.85)=1-P(z

In percent , 0.1976626\times100=19.76626\%\approx19.77\%

Hence, the approximate percentage of the test scores during the past year exceeded 80 =19.77%

6 0
3 years ago
Jacob’s classroom is on the second floor of his high school building. He’s sitting at his desk and trying to solve a quadratic e
svp [43]

The constant term in the equation is 24.

This is the height of the paper passing through the window at t=0.


This can be proven by replacing t with 0 in the equation, anything multiplied by 0 equals 0, so when t = 0 the height would be 24.


So the paper is 24 feet above the ground.

6 0
3 years ago
Determine the number of solutions that exist to the equation below. <br><br> 8(j - 4) = 2(4j - 16)
pishuonlain [190]
There are infinitely many solutions
5 0
3 years ago
IM HOMESCHOOLED AND I NEED SOME HELP WITH THIS QUESTION. ANYONE PLEASE HELP. my teacher won’t help me :(
gtnhenbr [62]

Answer:

GI = 18;   GE = 12; IE = 6

Step-by-step explanation:

The key to the question is to realize or find out what a centroid is and what it does. You can solve this question by knowing three things.

  1. The centroid is the meeting point of the three medians ( a median is a line that connects the midpoint of the side opposite a given vertex).
  2. The centroid divides the median in a ratio of 2:1. The longest segment is from the vertex to the centroid.
  3. The shortest segment is from the centroid to the midpoint of the side opposite the given vertex.

Point two is what you have to focus on.

GE/EI = 2/1

GE = 12                        Given

Solution

GE / EI = 2/1                 Substitute for the given    

12 / EI = 2/1                  Cross multiply

2*EI = 12 * 1                  Simplify the right

2 * EI = 12                     Divide by 2      

EI = 12/2                        Divide

Part Two

GI = EI + GE

GI = 6 + 12

GI = 18  

EI = 6

4 0
3 years ago
Following the pattern in squaring a binomial, fill-in the missing term. I need fast, please ​
melisa1 [442]

Answer:

c

Step-by-step explanation:

im not completely sure

8 0
3 years ago
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