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4 years ago

An expression is shown below:

Mathematics

1 answer:

ladessa [460]4 years ago

6 0

4(m+3+5m) 4(m+3+5m)
4(6m+3) 4(6m+3)
4x6m+12 or 4x3(2m+1)
= 24m+12 = 12(2m + 1 )

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Please help with this graphing question

cricket20 [7]

B. The equation poloma gave has a positive slope but the scatterplot has a negative correlation

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4 years ago

Assume that IQ scores are normally distributed with a mean of 100 and a standard deviation of 16. If 100 people are randomly sel

laiz [17]

Answer:

0.03 is the probability that for the sample mean IQ score is greater than 103.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 100

Standard Deviation, σ = 16

Sample size, n = 100

We are given that the distribution of IQ score is a bell shaped distribution that is a normal distribution.

Formula:

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

Standard error due to sampling =

$\dfrac{\sigma}{\sqrt{n}} = \dfrac{16}{\sqrt{100}} = 1.6$

P( mean IQ score is greater than 103)

P(x > 103)

$P( x > 103) = P( z > \displaystyle\frac{103 - 100}{1.6}) = P(z > 1.875)$

$= 1 - P(z \leq 1.875)$

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

$P(x > 103) = 1 - 0.970 =0.03= 3\%$

0.03 is the probability that for the sample mean IQ score is greater than 103.

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3 years ago

Do all parallelograms have at least one line of symmetry

swat32

I don't think parallelograms have symmetry

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3 years ago

Wesley Estimated 5.82-4.21 to be about 2. Is this an overestimate or an underestimate?

Bezzdna [24]

I'd say neither because 5.82-4.21 equals to 1.61, and it does not go above 2 as an overestimate. In addition, it's not an underestimate because 1.61 rounds up to 2. If you can't put that as an answer, you can say its an underestimate because it does not meet the real standards of being 2.

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3 years ago

Evaluate: xy+2x^2, if x=0.1 and y=9.8

shepuryov [24]

Answer: 1

Step-by-step explanation:

$(0.1)(9.8)+2(0.1)^2\\0.98+0.02=1$

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3 years ago

Read 2 more answers