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3 years ago

7

What is x in this equation −4.5= −0.5(x − 7.1)

1 answer:

Umnica [9.8K]3 years ago

7 0

Answer:

x=16.1

Step-by-step explanation:

$-4.5= -0.5(x -7.1)$

Divide both sides by -0.5

$9=x-7.1$

Add 7.1 to both sides

$16.1=x$

Hope this helps!

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The explicit formula for a sequence is<br> an=−2+3/2(n−1)<br> What is the 21st term of the sequence?

Anni [7]

Step-by-step explanation:

From the given question it appears that (n-1) is in the numerator's place, if it is so, then let us solve it.

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3 years ago

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marusya05 [52]

Answer:

p= 0.9995 and we can conclude that students receiving aid is more than 50% according to the sample results in 2% significance level.

Step-by-step explanation:

$H_{0}$ : less than or equal 50% of students at his college receive financial aid

$H_{a}$ : more than 50% of students receive financial aid.

According to the nul hypothesis we assume a normal distribution with proportion 50%.

z-score of sample proportion can be calculated using the formula:

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X is the sample proportion (0.65)
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N is the sample size (120)

then z= $\frac{0.65-0.50}{\frac{\sqrt{0.25}}{\sqrt{120} } }$ ≈ 3,29

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Help in this as well

Charra [1.4K]

Answer:

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Step-by-step explanation:

because 321.5 is between 321 and 322

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Oksi-84 [34.3K]

The rule for a rotation by <span>180
</span>(x,y)→(−x,−y)
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answer

</span>B'(-6, -12)

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