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2 years ago

Write the equation of a line that is perpendicular to y=-2/7x+9 and passes through the point (4,-6)

2 answers:

6 0

This is in slope-intercept form, so you can think of it as being y=mx+b. Invert m (the slope) and flip its sign, and then substitute the x and y values in and solve for b. The answer is y=7/2x-20.

34kurt2 years ago

6 0

Answer:y=7/2 x-20

Step-by-step explanation: just took the khan academy quiz goodluck loves!

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Suppose 40% of the students in a university are baseball players. If a sample of 781 students is selected, what is the probabili

3241004551 [841]

Answer:

$P(p>0.43) = 0.0436$

Step-by-step explanation:

Given

$p = 40\%$ -- proportion of baseball players

$n = 781$ --- selected sample

Required

Determine P(p>43%)

First, calculate the z score using:

$Z = \frac{\^{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

This gives:

$Z = \frac{48\%-40\%}{\sqrt{\frac{40\% *(1 - 40\%)}{781}}}$

Convert % to decimal

$Z = \frac{0.43-0.40}{\sqrt{\frac{0.40 *(1 - 0.40)}{781}}}$

$Z = \frac{0.43-0.40}{\sqrt{\frac{0.40 *0.60}{781}}}$

$Z = \frac{0.43-0.40}{\sqrt{\frac{0.24}{781}}}$

$Z = \frac{0.03}{\sqrt{0.00030729833}}$

$Z = \frac{0.03}{0.01752992669}$

$Z = 1.71$

So:

$P(p>0.43) = P(Z>1.71)$

$P(p>0.43) = 1 - P(Z$

$P(p>0.43) = 1 - 0.9564$

$P(p>0.43) = 0.0436$

5 0

2 years ago

Find two consecutive whole numbers that √45 falls between.

Hoochie [10]

It would fall between 6 and 7.

7 0

2 years ago

What is the fourth term of the expansion of the binomial (2x + 5)^5? Hence find the value of (2.02)5 correct 3D.P

vazorg [7]

Answer:

5000x^2 is the 4th term

Step-by-step explanation:

ok, 1 bionimial theorem coming right up

for a binomial expansion of (a+b)^n

the kth term is

means

n is 5

4th term

4-1=3

and a=2x

b=5

(10)(4x^2)(125)

5000x^2 is the 4th term

7 0

3 years ago

Find each missing measure find GF and m

8090 [49]

i think its 50 im not completley for sure though

8 0

2 years ago

A man worked 48 hours in one week. His regular pay was $7.80 per hour with time and a half of overtime.find his gross earnings f

Svetradugi [14.3K]

Answer:

I have no idea sorry

Step-by-step explanation:

7 0

3 years ago