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3 years ago

6

The airplane in the scale drawing has a wingspan of a feet and a tailspan of b feet. if the tailspan in the drawing is 2 inches,

and ab = 3, what is the actual wingspan of the airplane?

2 answers:

Elena L [17]3 years ago

7 0

30 feet is correct. Since a = 3b, the wingspan is 6 inches in the drawing, so it is 6x5 = 30 feet on the plane.

Ksivusya [100]3 years ago

7 0

Answer:

It’s D I had it on USATestprep

Step-by-step explanation:

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7 waitresses can serve 28 tables

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BEST ANSWER GETS BRAINLIEST! What expression represents the area of the triangle? A triangle has a base of 24 and a height of 10

Alborosie

Answer:

One-half times 10 times 24

Step-by-step explanation:

$area \: of \: triangle = \frac{1}{2} \times height \times base \\ \\ area \: of \: triangle = \frac{1}{2} \times 10 \times 24$

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3 years ago

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Rueben has scores of 70, 75, 83, 80 on four Spanish quizzes. What score must he get? on the next quiz to achieve a quiz average

igomit [66]

Answer:

92

Step-by-step explanation:

let 'q' = score on last quiz

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5

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308 + q ≥ 5(80)

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3 years ago

Can someone explain how to work this out please ?

cupoosta [38]

Answer:

x=4

Step-by-step explanation:

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

Let f(x) = 35

35 = (x-2)^5 +3

Subtract 3 from each side

35-3 = (x-2)^5 +3-3

32 = (x-2)^5

Take the fifth root of each side

32 ^ (1/5) = (x-2)^5^ 1/5

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Add 2 to each side

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6 0

3 years ago

Please help with statistic 22

Hitman42 [59]

<h3>Answer: 0.9754</h3>

======================================================

Explanation:

p = 0.58 = probability HR rep says to follow up within two weeks

n = 7 = sample size

Let's calculate the binomial P(x) value for x = 0 which will tell us the probability of having a sample with 0 reps recommending the follow up within two weeks.

$P(x) = (_n C _x)*(p)^{x}*(1-p)^{n-x}\\\\P(0) = (_{7} C _{0})*(0.58)^{0}*(1-0.58)^{7-0}\\\\P(0) = (1)*(0.58)^{0}*(0.42)^{7}\\\\P(0) \approx 0.00230539333249 \\\\P(0) \approx 0.002 305\\\\$

If we were to randomly select a sample of n = 7 HR managers, then there's roughly a 2.305% chance that x = 0 of that group will say to follow up within two weeks. This is when there's a 58% chance of each individual rep of saying "yes".

Repeat for x = 1 and you should find that P(1) = 0.022285 approximately.

Then we can say this:

$P(\text{0 or 1})+P(\text{at least 2}) = 1\\\\P(\text{x=0 or x=1})+P(x \ge 2) = 1\\\\P(0)+P(1)+P(x \ge 2) = 1\\\\P(x \ge 2) = 1-P(0)-P(1)\\\\P(x \ge 2) \approx 1-0.002305-0.022285\\\\P(x \ge 2) \approx 0.97541\\\\P(x \ge 2) \approx 0.9754\\\\$

If we selected a sample of n = 7 HR reps, there's roughly a 97.54% chance that 2 or more reps will recommend following up within 2 weeks.

6 0

3 years ago