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kirill [66]
3 years ago
9

Hey lol um pls help i don’t get it

Mathematics
1 answer:
frutty [35]3 years ago
8 0
I can’t see it it’s blurry be
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Write an equation. Let x be the unknown number.
Viktor [21]

4x - 14= -3

hope this helps! (:

4 0
3 years ago
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Determine if "h=3" is a solution.<br> 3h=2(h+2)-1
lutik1710 [3]

Answer:

Yes is a solution

Step-by-step explanation:

3h = 2(h+2)-1

We replace h=3

3*3 = 2(3+2) - 1

Solve

9 = 2(5)-1

9 = 10 - 1

9 = 9

Is correct h= 3

when we manage to find the same value on both sides of equality it means that the value entered is a possible option

4 0
3 years ago
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Find the sample size required to achieve the given margin of error with SD = 51.02 and z - score = 1.96. Round your answer to th
coldgirl [10]

Answer:

The sample size required is 2500.

Step-by-step explanation:

z-score:

In function of the margin of error M, the z-score is given by:

Z = \frac{M}{\frac{\sigma}{\sqrt{n}}} = \frac{M\sqrt{n}}{\sigma}

In this question, we have that:

\sigma = 51.02, M = 2, Z = 1.96

So

Z = \frac{M\sqrt{n}}{\sigma}

1.96 = \frac{2\sqrt{n}}{51.02}

2\sqrt{n} = 51.02*1.96

\sqrt{n} = \frac{51.02*1.96}{2}

(\sqrt{n})^2 = (\frac{51.02*1.96}{2})^2

n = 2500

The sample size required is 2500.

3 0
3 years ago
There are 10000 people living in a certain city. Suppose that the rate of population growth in the city is proportional to the n
hichkok12 [17]

Answer:

.............30000.............

7 0
2 years ago
Multiply the polynomial.<br><br> (4x+2)(x-2)<br><br> PLEASE HELP!!! ASAP!!!
OLga [1]

Answer:4x2−6x−4

Step-by-step explanation:

(4x+2)(x−2)

=(4x+2)(x+−2)

=(4x)(x)+(4x)(−2)+(2)(x)+(2)(−2)

=4x2−8x+2x−4

=4x2−6x−4

5 0
3 years ago
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