What’s 2 numbers that multiply to make -21 but add up to -4

Mathematics

1 answer:

irinina [24]3 years ago

4 0

Answer:

2 numbers that multiply to make -21 = 3 x (-7)

2 numbers that add up to -4 = 3 - 7

Step-by-step explanation:

2 numbers that multiply to make -21 = 3 x (-7) = -21

2 numbers that add up to -4 = 3 - 7 = -4

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Find the -scores that bound the middle 96 of the area under the standard normal curve by using the TI-84 calculator.

Korvikt [17]

Answer:

$\alpha=1-0.96 =0.04$

And $\alpha/2= 0.02$ and if we use the following function on the Ti84 plus we got:

invNorm(0.02,0,1)

invNorm(1-0.02,0,1)

And the values with the middle 96% of the values are:

$z_{\alpha/2}= \pm 2.054$

Step-by-step explanation:

For this case we want to find the limits with the middle 96% of the area below the normal curve, then the significance level would be:

$\alpha=1-0.96 =0.04$

And $\alpha/2= 0.02$ and if we use the following function on the Ti84 plus we got:

invNorm(0.02,0,1)

invNorm(1-0.02,0,1)

And the values with the middle 96% of the values are:

$z_{\alpha/2}= \pm 2.054$

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3 years ago

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gtnhenbr [62]

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In a large population, 82% of the households have cable tv. A simple random sample of 225 households is to be contacted and the

anzhelika [568]

Answer:

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Step-by-step explanation:

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