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2 years ago

Solve the inequality. Graph the solution. y-19 < 51

Mathematics

1 answer:

solong [7]2 years ago

6 0

Answer:

Step-by-step explanation:

y-19 greater than 51

y greater than 51 +19

y is equals to 70

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I have four bills that need to be paid this week. The electric bill is 182.17 the water bill is 92.55 the cell phone bill is 225

tangare [24]

The answer would be 200 + 200 +200+100 = 700

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2 years ago

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What is the amount of sales tax owned on a $6 book if the tax rate is 5%?

hodyreva [135]

6/100 = 0.06
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$0.30

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2 years ago

Match the statement to symbols a quarter of a number 4/x 4x ox/4 1/4+x

Reil [10]

A quarter of the number would be 1/4 +x

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3 years ago

Toxaphene is an insecticide that has been identified as a pollutant in the Great Lakes ecosystem. To investigate the effect of t

Likurg_2 [28]

Answer:

This data suggest that there is more variability in low-dose weight gains than in control weight gains.

Step-by-step explanation:

Let $\sigma_{1}^{2}$ be the variance for the population of weight gains for rats given a low dose, and $\sigma_{2}^{2}$ the variance for the population of weight gains for control rats whose diet did not include the insecticide.

We want to test $H_{0}: \sigma_{1}^{2} = \sigma_{2}^{2}$ vs $H_{1}: \sigma_{1}^{2} > \sigma_{2}^{2}$ . We have that the sample standard deviation for $n_{2} = 22$ female control rats was $s_{2} = 28$ g and for $n_{1} = 18$ female low-dose rats was $s_{1} = 51$ g. So, we have observed the value

$F = \frac{s_{1}^{2}}{s_{2}^{2}} = \frac{(51)^{2}}{(28)^{2}} = 3.3176$ which comes from a F distribution with $n_{1} - 1 = 18 - 1 = 17$ degrees of freedom (numerator) and $n_{2} - 1 = 22 - 1 = 21$ degrees of freedom (denominator).

As we want carry out a test of hypothesis at the significance level of 0.05, we should find the 95th quantile of the F distribution with 17 and 21 degrees of freedom, this value is 2.1389. The rejection region is given by {F > 2.1389}, because the observed value is 3.3176 > 2.1389, we reject the null hypothesis. So, this data suggest that there is more variability in low-dose weight gains than in control weight gains.

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3 years ago

Determine whether the statement is true or false. If the statement is false, make the necessary change(s) to produce a true stat

SVEN [57.7K]

7x-5=0
7x=5
x=5/7

Your answer was wrong. When you transpose (shift) the -5 to right side the sign should change and become a positive 5.
I don’t know if that makes sense.
In maths, when you move a number over the equal sign whether it’s to the right or the left of the equal sign the sign infront if the number must change as well.

Example:
2x +4=0
2x= -4
x=-2

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2 years ago