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svetoff [14.1K]
3 years ago
8

Sandra has taken 3 Test this Quarter. She has scored an 78%, 76%, and a 93%. Sandra wants to earn at least and 85% for the Quart

er. What score will she need to earn on her Final Test in order for her to Average at least an 85% for the Quarter? Then Explain what your answer means.
Mathematics
2 answers:
Lady bird [3.3K]3 years ago
8 0
I got 86% as the answer
algol [13]3 years ago
5 0

Answer:

I think at least a 86% hope this helps, hope i am right

Step-by-step explanation:

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g Nationwide, a certain disease occurs only a small proportion of people (.000215). A certain town has 74,000 residents. Use the
Andrei [34K]

Answer:

The probability that the town has 30 or fewer residents with the illness = 0.00052.

Step-by-step explanation:

So, we have the following set of data or information or parameters given from the question above and they are; the number of people living in that particular society/community/town = 74,000 residents and the proportion of people that the diseases affected = .000215.

The first step to do is to determine the expected number of people with disease. Thus, the expected number of people with disease = 74,000 × .000215 = 15.91.

Hence, the probability that the town has 30 or fewer residents with the illness = 1.23 × 10^-7 × 15.91^30/ 2.65253 × 10^-32 = 0.00052.

Note the formula used in the calculating the probability that the town has 30 or fewer residents with the illness =  e^-λ × λ^x/ x!

8 0
3 years ago
4(x-12)^1/3 = -16<br> Help please, thank you
Lina20 [59]

Hello!

4 (x-12) ^ 1/3 = -16

Step 1. Simplify each side of the equation, 4/ 3x + −16 = −16 and 4 /3 x −16 = −16

Step 2. Add 16 to both sides, 4 /3 x − 16 + 16 = −16 + 16

Step 3: Multiply both sides by 3/4, ( 3/4)*(4/3x)=(3/4)*(0)

Final Answer: x= 0

Hope I could help! :)


7 0
3 years ago
Solve the system of equations given below
yaroslaw [1]

Answer:

idek

Step-by-step explanation:

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3 years ago
The square root of 175<br> (Please show how you found it, thanks!)
Kisachek [45]
Type it into ur calculator as √175 and if you need radical form it’ll be 5√7 or just 13.2 (13.2287565553)
7 0
3 years ago
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Find the volume of a cone that has a height of 15 centimeters and a radius of 6 centimeters.
Mekhanik [1.2K]

Answer:

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Step-by-step explanation:

Cone=1/3bh

B is pir^2

so that means b=pi36 (6*6 =36)

36*15/3 is 565.2

7 0
3 years ago
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