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Mars2501 [29]
3 years ago
5

What does ‘x’ equal

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
6 0

Answer:

x=(-9)

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

(−2/3)(9+x)=0

(−2/3)(9)+(−2/3)(x)=0(Distribute)

−6+−2/3x=0

−2/3x−6=0

Step 2: Add 6 to both sides.

−2/3x−6+6=0+6

−2/3x=6

Step 3: Multiply both sides by 3/(-2).

(3−2)*(−2/3x)=(3−2)*(6)

x=−9


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Use same formula: (y2-y1)/(x2-x1)

Find the slope of the other points:
(-2,-5) and (-7,-3)
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(-1, 1) and (-6, -1)
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(0,0) and (2,5)
(5-0)/(2-0) = 5/2

(1,0) and (6,2)
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5 0
3 years ago
Suppose an advertising company wants to determine the current percentage of customers who read print magazines. How many custome
user100 [1]

Answer: 543

Step-by-step explanation:

Given : Level of confidence = 0.98

Significance level : \alpha=1-0.98=0.02

By using the normal distribution table,

Critical value : z_{\alpha/2}=2.33

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The formula to find the population proportion if prior proportion of population is unknown  :-

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\Rightarrow n=0.25(\dfrac{2.33}{0.05})^2=542.89\approx543

Hence, the company survey minimum sample having size  =543

8 0
4 years ago
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