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DaniilM [7]
2 years ago
14

Solve for x. Please explain how to do it (if you can).

Mathematics
1 answer:
gtnhenbr [62]2 years ago
3 0
Gimme a sec, i need more time
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5.1x = 1.02<br> Find what x is equal to make this equation true
erik [133]

To solve for x we must get it on one side by itself. Since x is being multiplied by 5.1, we must then divide both sides by 5.1 in order to essentially 'cancel out' the coefficient of x on the left side so that we then get x by itself:

5.1x=1.02

\frac{5.1x}{5.1}=\frac{1.02}{5.1}

x=0.2

So now we have solved for x and x = 0.2.

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What is the y intercept of the line whose equation is y=1/x-3
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Answer:

x-intercept: (1/3,0)

y-intercept: none

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3 years ago
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A certain standardized test's math scores have a bell-shaped distribution with a mean of 530 and a standard deviation of 119. Co
kumpel [21]

Answer:

a) 68.2%

b) 31.8%

c) 2.3%

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 530

Standard Deviation, σ = 119

We are given that the distribution of math scores is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) P(test scores is between 411 and 649)

P(411 \leq x \leq 649)\\\\= P(\displaystyle\frac{411 - 530}{119} \leq z \leq \displaystyle\frac{649-530}{119})\\\\= P(-1 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -1)\\= 0.841 - 0.159 = 0.682 = 68.2\%

b) P(scores is less than 411 or greater than 649)

P(x < 411 < x, x > 649)\\=1 = P(411 \leq x \leq 649)\\=1 - 0.682\\=0.318 = 31.8\%

c) P(score greater than 768)

P(x > 768)

P( x > 768) = P( z > \displaystyle\frac{768 - 530}{119}) = P(z > 2)

= 1 - P(z \leq 2)

Calculation the value from standard normal z table, we have,  

P(x > 768) = 1 -0.977 = 0.023 = 2.3\%

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3 years ago
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The answer is B 484pi ft squared
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Use the tally chart to answer the question.
Semenov [28]

Answer:

your answer would be A

Step-by-step explanation:

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3 years ago
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