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4 years ago

I need help with this last question

Mathematics

1 answer:

lesya692 [45]4 years ago

6 0

the statement (l4x-2l = -6) is false (no solution) for any value of x because the absolute value function is always positive or 0

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Simplify 3( j+2 ) - 2

Scorpion4ik [409]

Answer: 3j +4

3(j)+ 3(2) = 3j+ 6 - 2 = 3j +4

Hope this helps

3 0

3 years ago

Read 2 more answers

Based on historical data, your manager believes that 26% of the company's orders come from first-time customers. A random sample

scoundrel [369]

Answer:

$\hat p \sim N( p, \sqrt{\frac{p (1-p)}{n}})$

And we can use the z score formula given by:

$z = \frac{\hat p -\mu_p}{\sigma_p}$

And if we find the parameters we got:

$\mu_p = 0.26$

$\sigma_p = \sqrt{\frac{0.26(1-0.26)}{158}} = 0.0349$

And we can find the z score for the value of 0.4 and we got:

$z = \frac{0.4-0.26}{0.0349}= 4.0119$

And we can find this probability:

$P(z>4.0119) = 1-P(z$

And if we use the normal standard table or excel we got:

$P(z>4.0119) = 1-P(z$

Step-by-step explanation:

For this case we have the following info given:

$p = 0.26$ represent the proportion of the company's orders come from first-time customers

$n=158$ represent the sample size

And we want to find the following probability:

$p(\hat p >0.4)$

And we can use the normal approximation since we have the following two conditions:

1) np = 158*0.26 = 41.08>10

2) n(1-p) = 158*(1-0.26) = 116.92>10

And for this case the distribution for the sample proportion is given by:

$\hat p \sim N( p, \sqrt{\frac{p (1-p)}{n}})$

And we can use the z score formula given by:

$z = \frac{\hat p -\mu_p}{\sigma_p}$

And if we find the parameters we got:

$\mu_p = 0.26$

$\sigma_p = \sqrt{\frac{0.26(1-0.26)}{158}} = 0.0349$

And we can find the z score for the value of 0.4 and we got:

$z = \frac{0.4-0.26}{0.0349}= 4.0119$

And we can find this probability:

$P(z>4.0119) = 1-P(z$

And if we use the normal standard table or excel we got:

$P(z>4.0119) = 1-P(z$

8 0

3 years ago

A recipe calls for an oven to be preheated to 400 °F. What is the approximate temperature of the preheated oven in Celsius degre

Nutka1998 [239]

Answer:

204 4/9 °C

Step-by-step explanation:

Put the number in the formula and do the arithmetic.

°C = (5/9)(400 -32) = 5/9(368) = 204 4/9

The temperature in °C is 204 4/9.

_____

Most likely, it would be written as 205 °C in a metric version of the recipe.

6 0

4 years ago

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What is the distance between -9 and 42 on the number line?

Jlenok [28]

Answer:

51 is the answer to the question

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3 years ago

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What am I doing wrong? I've tried every conceivable answer, I thought I was good at this type of math but this program keeps pro

iVinArrow [24]

Answer:

Step-by-step explanation:

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3 years ago