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kap26 [50]
3 years ago
12

20 points <3

Mathematics
2 answers:
DerKrebs [107]3 years ago
7 0
C is the correct answer
Neko [114]3 years ago
5 0

Answer:

d=2r

Step-by-step explanation:

edge 2020

<em>p.s. pls mark brainliest, and have a good day! :)</em>

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Please help, algebra is annoying
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The zeros are the x-intercepts, which are -2 and 4.

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3 years ago
The sample consisted of 50 night students, with a sample mean GPA of 3.02 and a standard deviation of 0.08, and 25 day students,
bulgar [2K]

Answer: The test statistic is t= -0.90.

Step-by-step explanation:

Since we have given that

n₁ = 50

n₂ = 25

\bar{x_1}=3.02\\\\\bar{x_2}=3.04\\\\\sigma_1=0.08\\\\\sigma_2=0.06

So, s would be

s=\sqrt{\dfrac{n_1\sigma_1^2+n_2\sigma_2^2}{n_1+n_2-2}}\\\\s=\sqrt{\dfrac{50\times 0.08^2+25\times 0.06^2}{50+25-2}}\\\\s=0.075

So, the value of test statistic would be

t=\dfrac{\bar{x_1}-\bar{x_2}}{s(\dfrac{1}{n_1}+\dfrac{1}{n_2})}\\t=\dfrac{3.02-3.04}{0.074(\dfrac{1}{50}+\dfrac{1}{25})}\\\\t=\dfrac{-0.04}{0.074(0.02+0.04)}\\\\t=\dfrac{-0.04}{0.044}\\\\t=-0.90

Hence, the test statistic is t= -0.90.

7 0
3 years ago
I really need help with number 9. and with number 14. please help me
harina [27]

Answer:

8 is D 9 is B and 14 is C

Step-by-step explanation:


3 0
4 years ago
Read 2 more answers
You purchased an investment for $5000 that gains 11% in value every year.
german

Answer:

After 20 years the investment will be worth 11,000$

Step-by-step explanation:

in order to solve the problem you have to turn the percent into a decimal by moving the percent sign twice to the left. which will result in ".11"

then you multiply 5,000x.11 and it equals to 550 per year.

multiply 550x20 and you get 11,000

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Kruka [31]
I think -3 but I’m kinda dumb so idk
5 0
3 years ago
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