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dimaraw [331]
3 years ago
11

What is the y intercept of f(x)=4-5x A. -5 B. -4 C. 4 D. 5

Mathematics
2 answers:
dmitriy555 [2]3 years ago
7 0

Answer:

C) 4 i think? i would double check.

Step-by-step explanation:

KIM [24]3 years ago
7 0
The y intercept of f(x)=4-5x
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What's the GCF of 26y and 52y?
adoni [48]

Answer:

26y

Step-by-step explanation:

26y and 52y.

13*2*y and 13*2*2 *y

Common is 13*2*y

or 26y

Hope this helps!

7 0
2 years ago
In order to ensure efficient usage of a server, it is necessary to estimate the mean number
juin [17]

Answer:

a. [36.19;39.21]

b. Reject the null hypothesis. The population mean of users that are connected at the same time is greater than 35.

Step-by-step explanation:

Hello!

Your study variable is,

X: "number of users of one server at a time"

The objective is to estimate the mean, for this, a sample of n=100 times was taken and the standard deviation S= 9.2 and the sample mean is X[bar]= 37.7 were calculated.

You need to study the population mean, for this you need your variable to have at least normal distribution. Since you don't have information about its distribution, but the sample is big enough (n≥30) you can apply the Central Limit Theorem and approximate the distribution of the sample mean X[bar] to normal:

X[bar]≈N(μ;σ²/n)

a. With this approximation, you can construct the 90% Confidence Interval using the approximate Z

[X[bar] ± Z_{1-\alpha /2} * S/√n]

Z_{1-\alpha /2} = Z_{0.95} = 1.64

[37.7± 1.64* 9.2/√100]

[36.19;39.21]

b. You need to test if the population mean is greater than 35 with a level of significance of 1%.

The hypothesis is:

H₀: μ ≤ 35

H₁: μ > 35

α: 0.01

This is a one-tailed test so you have only one critical level (right tail):

Z_{1\alpha } = Z_{0.99} = 2.33

This means that if the value of the calculated statistic is equal or greater than 2.33 you will reject the null Hypothesis.

If the value is less than 2.33 you will support the null hypothesis.

The statistic is:

Z=<u> X[bar] - μ </u>= <u> 37.7 - 35 </u> = 2.93

       S/√n           9.2/10

The value 2.93 > 2.33, so you reject the null hypothesis. This means that the population mean of users that are connected at the same time is greater than 35.

<u><em>Note: </em></u><em>To make the decision using the interval calculated on a), the hypothesis should have been two-tailed and the confidence and significance levels complementary.</em>

I hope it helps!

7 0
3 years ago
6^2 times 3/2 dived by 71/54 plz actually help<br><br> anyone got pad let
algol [13]

Answer:

41.0704225352 or 284x/9 + 0

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
PLEAAASE HELP! i will manifest good things for you. i will mark u brainliest LOL
melamori03 [73]

Answer:

(c) is m=1 i am working on the other ones

5 0
3 years ago
3n + 14= --4 What is the answer
andre [41]

Answer: n = -6

Step-by-step explanation:

3n+14=-4

Subtract 14 from both sides.

3n+14-14=-4-14

Simplify

3n=-18

Divide both sides by 3

3n/3 = -18/3

n=-6

5 0
3 years ago
Read 2 more answers
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