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3 years ago

Find the 84th percentile

Mathematics

1 answer:

morpeh [17]3 years ago

5 0

Answer:

Roughly speaking, in a normal distribution, a score that is 1 s.d. above the mean is equivalent to the 84th percentile. ... In other words, roughly 95 percent of students are within two standard deviations – positive or negative – of the average

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Can u help me with this problem 1/2+-2/5t-1=1/5t+t

Temka [501]

1/2+-2/5t(+2/5)=1/5t+t(+2/5)
simplify
1/2=2 and 3/5t
change to a decimal
.5 = 2.6t
divide both sides by 2.6
.5/2.6 2.6t/2.6
you get T= .3125

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Lenore borrowed $400 to pay for car repairs. She needs to pay it back in 2 years with simple interest. Lenore wants to figure ou

Goryan [66]

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3 years ago

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NEED ANSWER FAST PLEASEE

gizmo_the_mogwai [7]

Answer: $y=2x+7$

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

$y=mx+b$

Where "m" is the slope and "b" the y-intercept.

Given the equation:

$y=-\frac{1}{2}x-4$

You can identify that:

$m=-\frac{1}{2}$

Since the slopes of perpendicular lines are negative reciprocals, the slope of the line perpendicular to $y=-\frac{1}{2}x-4$ must be:

$m=2$

Substitute the slope and the coordinates of the given point into $y=mx+b$ and solve for "b":

$3=(2)(-2)+b\\\\3+4=b\\\\b=7$

Therefore, the equation of that line is:

$y=2x+7$

3 0

3 years ago

Suppose an initial investment of $100 will return $50/year for 3 years (assume the $50 is received each year at the end of the y

nydimaria [60]

With a positive NPV, it shows that the investment is profitable.

It is a profitable investment with a positive NPV at a discount rate of 20%.

Data and Calculations

Initial investment = $100

Annual cash inflows = $50

Period of investment = 3 years

Discount rate = 20%

<h3>What is the present value?</h3>

Present value (PV) is the current value of a future sum of money or stream of cash flows given a specified rate of return.

Present Value (PV) annuity factor for 3 years at 20% = 2.106

Present value of annual cash inflows = $105.3 ($50 x 2.106)

Net Present Value (NPV) = $5.3 ($105.3 - $100)

Thus, with a positive NPV, it shows that the investment is profitable.

To learn more about the investment visit:

brainly.com/question/12957049

#SPJ1

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2 years ago