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3 years ago

5

(x+3)(2x^2+9x-2) please help

1 answer:

Juliette [100K]3 years ago

4 0

Answer:

23+152+25−6.

;))

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Let h = 3. <br><br> What is the value of (27 ÷ h) · 5?

swat32

The answer would be 45 because 27/3=9 and 9*5=45

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3 years ago

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Lydia's bedroom has an area of 108 square feet. The length of the room is 12 feet long. What is the width of the room?

gladu [14]

Answer: 9 Feet

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2 years ago

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6x + 2y - 8 = 12x +4y - 16.

Arlecino [84]

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2 years ago

HELP PLEASE!!!!!!!!!!!!

miskamm [114]

Given that < 1 and < 3 are corresponding angles with the same measure, and that < 1 and m < 38 ° are supplementary angles in which their measures add up to 180°:

Then:

m< 1 + m < 38° = 180°

m < 1 = 180° — m < 38°

m < 1 = 142°

Since m < 1 = m < 3, then m < 3 = 142°

7 0

3 years ago

Mileage tests are conducted for a particular model of automobile. If a 98% confidence interval with a margin of error of 1 mile

Llana [10]

Answer: 37

Step-by-step explanation:

Given : Significance level : $\alpha:1-0.98=0.02$

Critical value : $z_{\alpha/2}=z_{0.01}=2.33$

margin of error : E= 1 mile per gallon

Population standard deviation: $\sigma=2.6$ miles per gallon.

We know that when the population standard deviation is known then the formula to find the sample size is given by :

$n=(\dfrac{z_{\alpha/2}\times \sigma}{E})^2$

$n=(\dfrac{(2.33)\times 2.6}{1})^2=36.699364\approx37$ [Round to the next whole number.]

Hence, the required number of automobiles should be used in the test = 37

7 0

3 years ago