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3 years ago

Plzzzzzzzzzzzzzz answer this!!

Mathematics

2 answers:

lawyer [7]3 years ago

7 0

Answer:

≈ 9.4 cm

Step-by-step explanation:

P(-4, -2), Q(4,3)

d= √(x2-x1)²+(y2-y1)²=√ (4+4)²+(3+2)²= √64+25 = √89 ≈ 9.4 cm

kirill [66]3 years ago

5 0

Answer:

9.4

Step-by-step explanation:

Hello! To solve this problem, you need to know the distance between two points formula. That is $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 } \\$ . Now, just plug in the numbers from the equation. $x_{2}$ is -4, $x_{1}$ is 4, $y_{2}$ is -2, and $y_{1}$ is 3. So, then you have $\sqrt{(-4-4)^2+(-2-3)^2}$ , which is equal to $\sqrt{89$ . $\sqrt{89$ rounded to one decimal place is 9.4. I believe that is the right answer, please let me know if it helped.

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Two parallel lines are intersected by a third line so that angles 1 and 5 are congruent. 2 parallel horizontal lines are interse

kkurt [141]

Answer: i think it D i might be wrong

Step-by-step explanation:

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3 years ago

A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and tes

Pavel [41]

Answer:

0.818

Step-by-step explanation:

Since the shipment has a ton of aspirin tablets, we can assume that we pick 13 of them with reposition, because the probability shoudn't change dramatically from the probability of picking without reposition if we do so.

We call D the amount of defective tablets. If we assume that we pick the tablets with reposition, then we obtain that D is a random variable of Binomial distribution with parameters 13 and 0.6 (the probability of picking a defective tablet).

We want D to be at most one. To calculate the probability of that event we add up the probability of D being equal to 0 and the probability of D being equal to one. Since D is binomial, we have

$P(D = 0) = (1-0.06)^{13} = 0.447$
$P(D = 1) = {13 \choose 1} * 0.06^1 * (1-0.06)^{12} = 13*0.06*0.94^{12} = 0.371$

We conclude that

$P(D \leq 1) = P(D = 0) + P(D = 1) = 0.447+0.371 = 0.818$

Hence, the shipment will be accepted with probability 0.818

I hope this helps you!

6 0

3 years ago

Sean and Evan are college roommates who have part-time jobs as servers in restaurants. The distribution of Sean’s weekly income

Sauron [17]

Answer:

d. 0.303

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Subtraction between normal variables:

When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.

In this question:

We want the probability of Sean having a greater income than Evan, which is the probability of the subtraction of Sean's income by Evan's income is greater than 0.

Distribution of the difference between Sean's and Evan's income:

Sean has mean 225, Evan 240. So

$\mu = 225 - 240 = -15$

Sean's standard deviation is of 25, Evan's of 15. So

$\sigma = \sqrt{25^2+15^2} = 29.15$

Probability that Sean will have a greater income than Evan in a randomly selected week:

Probability of the subtraction being greater than 0, which is 1 subtracted by the pvalue of Z when X = 0. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{0 - (-15)}{29.15}$

$Z = 0.51$

$Z = 0.51$ has a pvalue of 0.695

1 - 0.695 = 0.305.

Closest to 0.303, option d.

5 0

3 years ago

Suppose the diameter of a circle is \color{green}{4}4start color green, 4, end color green units. What is its circumference?

Triss [41]

I don’t really understand what this is asking but the formula for circumference is C= πd Remember that diameter (width of the circle) is double the radius (half the width of the circle) and π is about 3.14
Hope this helped

6 0

3 years ago

A theater company charges $5.50 per ticket for people of all age groups. If c represents the total number of children who bought

harina [27]

The theater charges $5.5 per ticket per person of any age group.
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Your expression would be 5.5(a+c).
Your first option is the correct one.

4 0

3 years ago

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