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3 years ago

6

Jennifer uses rainwater from a barrel to water her garden. The diagram shows the amount of water she used during a 4-day period.

Which of the following is closest to the fraction of a full barrel of water that Jennifer used per day?

1 answer:

Talja [164]3 years ago

6 0

Answer:

1/2 is the answer

Step-by-step explanation:

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A random sample of 330 electronic components manufactured by a certain process are tested, and 30 are found to be defective. A d

avanturin [10]

Answer:

The result is significant.

Step-by-step explanation:

Here,

p = 30 ÷ 330 = 0.091

thus, q = 1 - p = 0.909

Also, $\sigma=\sqrt{\frac{pq}{n} }$

⇒ $\sigma=\sqrt{\frac{0.091\times0.909}{330} }=0.0158$

The z-score is:

$z=\frac{p-p_{0}}{\sigma}$

$z=\frac{0.091-0.05}{0.0158}=2.595$

Thus, at 95% confidence interval, p-value = 0.005

The result is significant at p < .05.

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3 years ago

HELP! WILL GIVE BRAINLIEST!!! I think it's D please check

kow [346]

Answer:

(x + 5) (x^2 -3)

Step-by-step explanation:

$x^{3} +5x^{2} - 3x - 15$

Do the grouping:

$x^{3} +5x^{2} - 3x - 15 = (x^{3} +5x^{2}) + (-3x - 15)$

Then factor out $x^{2}$ in the first and −3 in the second group.

$x^{2}(x+5) - 3(x+5)$

Factor out the common term x + 5 by using the distributive property.

Polynomial $x^{2}-3$ is not factored in since it does not have any rational roots, thus getting the following:

$(x+5)(x^{2} -3)$

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On khan my progress wont go up and i need 50% and i have 44 help please

Nat2105 [25]

Answer:

watch 2 more videos

Step-by-step explanation:

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3 years ago

If(x)= 2e^x-1 +3 , what is f^-1 (x)

Rainbow [258]

Answer:

f^-1 (x) = 1+ln( (x-3)/2)

Step-by-step explanation:

hello :

let f(x) = y so : y = 2e^(x-1) +3

calculate x : e^(x-1) = (y-3)/2

for : y-3 > 0 : x-1 = ln( (y-3)/2) so : x= 1+ln( (y-3)/2)

If(x)= 2e^(x-1) +3 , what is f^-1 (x) = 1+ln( (x-3)/2)

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3 years ago

P(t) = 21,000 (4/7)^t/3

Anika [276]

Answer:

No solution exists!

Step-by-step explanation:

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4 years ago