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3 years ago

Use the rules of exponents to evaluate and simplify the following expression. Type all without negative exponents.

1 answer:

5 0

For this case we have the following expression:
(ab) ^ - 2
Rewriting the expression we have:
(ab) ^ - 2 = 1 / (ab) ^ 2
Then, for power properties we have:
1 / (ab) ^ 2 = 1 / (a ^ 2b ^ 2)

Answer:
The simplified expression is:
1 / (a ^ 2b ^ 2)

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Simplify: ( 1^0+2^1+3^2) ÷ 22/ 5^0

Aleksandr-060686 [28]

Step-by-step explanation:

( 1 + 2 + 9 ) ÷ 22/ 1

12 ÷ 22

6 ÷ 11

cc: Anything raised to the power of zero is 1

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3 years ago

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Complete parts (a) through (c) below.

Yuki888 [10]

Answer:

a) $t_{crit}= 1.34$

b) $t_{crit}=-2.539$

c) $t_{crit}=\pm 2.228$

Step-by-step explanation:

Part a

The significance level given is $\alpha=0.1$ and the degrees of freedom are given by:

$df = n-1= 15$

Since we are conducting a right tailed test we need to find a critical value on the t distirbution who accumulates 0.1 of the area in the right and we got:

$t_{crit}= 1.34$

Part b

The significance level given is $\alpha=0.01$ and the degrees of freedom are given by:

$df = n-1= 20-1=19$

Since we are conducting a left tailed test we need to find a critical value on the t distirbution who accumulates 0.01 of the area in the left and we got:

$t_{crit}=-2.539$

Part c

The significance level given is $\alpha=0.05$ and $\alpha/2 =0.025$ and the degrees of freedom are given by:

$df = n-1= 11-1=10$

Since we are conducting a two tailed test we need to find a critical value on the t distirbution who accumulates 0.025 of the area on each tail and we got:

$t_{crit}=\pm 2.228$

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3 years ago

What is 9% expressed as a decimal?

kakasveta [241]

Answer:

0.09

Step-by-step explanation:

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2 years ago

Help please Which is the equation of a trend line that passes through the points (3, 95) and (11, 12)? Round values to the neare

Greeley [361]

Answer:

y = -10.375x + 126.125

Step-by-step explanation:

(12-95)/(11-3) = -83/8 = -10.375

y = mx + b

12 = -10.375(11) + b

12 = -114.125 + b

b = 126.125

y = -10.375x + 126.125

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3 years ago

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Compare the linear functions expressed below by data in a table and by an equation.

kondor19780726 [428]

Answer:

b,c,e

Step-by-step explanation:

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3 years ago