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balandron [24]
3 years ago
15

7.

Mathematics
2 answers:
o-na [289]3 years ago
6 0

Answer:

answer...

Step-by-step explanation:

here is u answer

IRINA_888 [86]3 years ago
4 0

Answer:

-  \frac{1}{2}  {n}^{2}  + 18 = 0 \\ -  \frac{1}{2} {n}^{2}  =  - 18 \\  {n}^{2}  =  - 18 \times  - 2 \\  {n}^{2}  = 36 \\ n =   +  - \sqrt{36}  \\ n =  +  - 6

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G(X)= 6X - 3<br> What is g-1 (9)
harkovskaia [24]
G(X)=6X-3
Y=6X-3
X=6Y-3
X+3=6Y
Y=(X+3)/6
G^-1(9)=(X+3)/6
G^-1(9)=(9+3)/6
G^-1(9)=2
6 0
3 years ago
In a random sample of 200 Americans, 51% said they favor building more nuclear power plants. In a random sample of 150 French, 4
Varvara68 [4.7K]

Answer:

Yes, there is enough evidence to say the proportions are the same.

Step-by-step explanation:

Null hypothesis: The proportions are the same.

Alternate hypothesis: The proportions are not the same.

Data given:

p1 = 51% = 0.51

n1 = 200

p2 = 48% = 0.48

n2 = 150

pooled proportion (p) = (n1p1 + n2p2) ÷ (n1 + n2) = (200×0.51 + 150×0.48) ÷ (200 + 150) = 174 ÷ 350 = 0.497

Test statistic (z) = (p1 - p2) ÷ sqrt[p(1-p)(1/n1 + 1/n2) = (0.51 - 0.48) ÷ sqrt[0.497(1-0.497)(1/200 + 1/150)] = 0.03 ÷ 0.054 = 0.556

The test is a two-tailed test. At 0.10 significance level the critical values -1.645 and 1.645

Conclusion:

Fail to reject the null hypothesis because the test statistic 0.556 falls within the region bounded by the critical values.

8 0
3 years ago
PLEASE HELP ME FAST! THIS IS A SIMPLE TRIG PROBLEM BUT I SKIPPED CLASS.
NikAS [45]

we can factor the whole thing:

(2sin(x) -1)(sin(x)+1) = 0.

Therefore, sin(x) = -1 and sin(x) = 1/2.

For the first one x = 3π/2 and the second is π/6 and 5π/6

So 3π/2, π/6 and 5π/6 are the solutions.

I do kind of have a problem with this because it doesn't mention if you should go over 360°. Otherwise, you have to add in an 2nπ into the equations like 3π/2 + 2nπ; n \in \mathbb{W}

but I don't know if that is necessary for you.

3 0
3 years ago
What is an example of karma
Leokris [45]

Answer:

Negative karma: You yell at someone for being dumb, but you fail your exam.

Good karma: You give money to the homeless, and then find money on the floor.

4 0
3 years ago
Read 2 more answers
16. (-4) = what is the answer<br>​
kirill115 [55]

Answer

-64

just use ur calculator since my teacher let us use the calculator i just typed in 16.(-4) and got -64  

5 0
3 years ago
Read 2 more answers
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