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mixas84 [53]
3 years ago
7

Sur une photographie réalisée avec un

Mathematics
1 answer:
shtirl [24]3 years ago
3 0

Answer:

0.3cm ?

Step-by-step explanation:

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In a certain city of several million people, 7.7% of the adults are unemployed. If a random sample of 300 adults in this city is
Lilit [14]

Answer: 0.2643

Step-by-step explanation:

Given : The proportion of  adults are unemployed : p=0.077

The sample size = 300

By suing normal approximation to the binomial , we have

\mu=np=300\times0.077=23.1

\sigma=\sqrt{np(1-p)}=\sqrt{300\times0.077(1-0.077)}\\\\=4.61749932323\approx4.62

Now, using formula z=\dfrac{x-\mu}{\sigma}, the z-value corresponding to 26 will be :-

z=\dfrac{26-23.1}{4.62}\approx0.63

Using standard distribution table for z , we have

P-value=P(z\geq0.63)=1-P(z

=1-0.7356527=0.2643473\approx0.2643

Hence, the probability that at least 26 in the sample are unemployed  =0.2643

6 0
3 years ago
2-3x=-6 solve the ecuation<br> <img src="https://tex.z-dn.net/?f=2%2F-3x%3D-6" id="TexFormula1" title="2/-3x=-6" alt="2/-3x=-6"
Mkey [24]
Answer:

2-3x=-6

We simplify the equation to the form, which is simple to understand
2-3x=-6

We move all terms containing x to the left and all other terms to the right.
-3x=-6-2

We simplify left and right side of the equation.
-3x=-8

We divide both sides of the equation by -3 to get x.
x=2.66666666667

God bless you and have a beautiful rest of the day!
8 0
3 years ago
Read 2 more answers
HELPP ME PLZ WILLING TO SEND MONEY! It’s urgent
ExtremeBDS [4]

Answer:

I think it would be 5 and 5 of each solution

7 0
3 years ago
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Solve for x.<br> -30 = 5(x + 1) <br>x=​
Alecsey [184]

Answer: -7

Step-by-step explanation:

-30 = 5(x + 1)

-30 = 5x + 5.  ( After distrbuting the 5)

-5.            -5

-30 - 5. = 5x

-35 = 5x

x = -7

5 0
3 years ago
Is it A, B, C, or D please help! 9 x to the power of 2 minus 12 x plus 4 = A. 22 B. 49 C. 85 D. 697
Masja [62]

Answer:

B. 49

Step-by-step explanation:

Q; 9x^2 - 12x + 4

I graphed this equation to check A, B, C, and D for a solution and only B had a solution. So, I believe the answer is 49.

5 0
3 years ago
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