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3 years ago

What is the domain? F(x)= 3x^2-2x-1/ x^2+3x-10

Mathematics

1 answer:

9966 [12]3 years ago

8 0

Domain:
(
−
∞
,
∞
)
,
{
x
|
x
∈
R
}

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Joe makes $1,298.50 in one week. How much does he make in one day?

erik [133]

Hello,

For this, you'll wanna do the following...

7d = 1,298.50...now divide both sides by 7...

That should leave you with Joe making 185.50$ a day over the week. Not to bad I say aha.

7 0

3 years ago

The population of weights of a particular fruit is normally distributed, with a mean of 464 grams and a standard deviation of 6

igomit [66]

Answer:

If 27 fruits are picked at random, then 2% of the time, their mean weight will be greater than 466.37 grams

Step-by-step explanation:

Mean = $\mu = 464$

Standard deviation = $\sigma = 6$

We are supposed to find If 27 fruits are picked at random, then 2% of the time, their mean weight will be greater than how many grams i.e.P(X>x)=0.02

The mean weight is in the highest 2%, you want to go to a z-table and find the z-score that where the area to the left of the curve is closest to 0.98.

n = 27

Refer the z -table

P(Z>x)=2.06

$\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}=2.06\\\frac{x-464}{\frac{6}{\sqrt{27}}}=2.06\\x-464=2.06 \times \frac{6}{\sqrt{27}}\\x=(2.06 \times \frac{6}{\sqrt{27}})+464\\x=466.37$

So, If 27 fruits are picked at random, then 2% of the time, their mean weight will be greater than 466.37 grams

7 0

3 years ago

Can anyone answer the q in the photo?

BaLLatris [955]

Tan(Ф) = 4/3

tan(Ф) = b/6Ф, then 4/3 =b/6

cross multiplication: 3b=24 and b= 24/3, b = 8 (answer D)

6 0

3 years ago

Solve the equation for all real solutions. <br> 15n^2-22n+8=0

Salsk061 [2.6K]

I hope it helps you......

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3 years ago

Classify the two given samples as independent or dependent. sample 1: the scores of 20 students who took the act sample 2: the

topjm [15]

Classify the two given samples as independent or dependent.

sample 1: the scores of 20 students who took the act

sample 2: the scores of 20 different students who took the sat

Solution: The two given samples are independent samples because in both the samples, the scores of one student will not affect the scores of other students.

Independent samples are samples that are selected randomly so that its observations do not depend on the values other observations.

3 0

3 years ago