3 years ago

Find all real solutions of the equation. (if there is no real solution, enter no real solution.) 8x2 + 6x − 9 = 0

Mathematics

1 answer:

Arturiano [62]3 years ago

5 0

Hey there !

Check the attachment.
Hope it helps you :)

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2 years ago

A gondola (cable car) at a ski area holds 50 people. Its maximum safe load is 10000 pounds. A population of skiers has a distrib

fenix001 [56]

Answer: 0.03855

Step-by-step explanation:

Given :A population of skiers has a distribution of weights with mean 190 pounds and standard deviation 40 pounds.

Its maximum safe load is 10000 pounds.

Let X denotes the weight of 50 people.

As per given ,

Population mean weight of 50 people = $\mu=50\times190=9500\text{ pounds}$

Standard deviation of 50 people $=\sigma=40\sqrt{50}=40(7.07106781187)=282.84$

Then , the probability its maximum safe load will be exceeded =

$P(X>10000)=P(\dfrac{X-\mu}{\sigma}>\dfrac{10000-9500}{282.84})\\\\=P(z>1.7671-8)\\\\=1-P(z\leq1.7678)\ \ \ \ [\because\ P(Z>z)=P(Z\leq z)]\\\\=1-0.96145\ \ \ [\text{ By p-value of table}]\\\\=0.03855$

Thus , the probability its maximum safe load will be exceeded = 0.03855

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3 years ago

I need help with 3-6

Nataly_w [17]

Oh. I thought you meant 3-6, not questions 3 through 6. Sorry :(

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4 years ago

Should you flip the inequality sign in this problem?<br> -9x + 27 = -13<br> Yes no

Angelina_Jolie [31]

Answer:

Step-by-step explanation:no you should not

-9x+27=-13

-9x-27=13

-9x=18

-2=x

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3 years ago

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pav-90 [236]

3(1,000,000)=3,000,000
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3,300,200

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