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3 years ago

Find the distance CD rounded to the nearest tenth. C = (7,-4) and D = (-8,-5) CD = [?]

Mathematics

1 answer:

quester [9]3 years ago

7 0

Answer:

CD= 15.03

Step-by-step explanation:

x1=7, x2= -8

y1=-4, y2=-5

distance CD= √(x2- x1) 2+ (y2-y1)2

= √( -8-7)2 + [-5-(-4)]2

= √(15)2+ (-5+4)2

= √225+ (1)2

= √225+1

= √226

= 15.03

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Large Sample Proportion Problem. A survey was conducted in Ohio on high school marijuana use. Of the 2266 high school students s

Airida [17]

Answer: 0.0328

Step-by-step explanation:

Standard error is the standard deviation of the sampling distribution.

The formula to find the standard error is given by :-

$SE=\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

,where n= sample size.

$\hat{p}$ = Sample proportion.

Given : Of the 2266 high school students surveyed, 952 admitted to smoking marijuana at least once.

A study done 10 years earlier estimated that 45% of the students had tried marijuana.

i.e. Population proportion : p= 0.45

Sample size : n= 226

Sample proportion : $\hat{p}=\dfrac{952}{2256}\approx0.42$

Then , the standard error for this test will be :-

$SE=\sqrt{\dfrac{0.42(1-0.42)}{226}}\\\\ SE=\sqrt{0.0010779}=0.0328310\approx0.0328$

Hence, the standard error for this test= 0.0328

5 0

4 years ago

Use the function below to find F(2).<br> F(t) = 2•1/2^3t

navik [9.2K]

Answer:

$F(2)= \frac{1}{32}$

Step-by-step explanation:

The given function is

$F(t) = 2 \cdot \: \frac{1}{{2}^{3t} }$

To find F(2), we substitute t=2 into the function.

This means that wherever we see t, we put 2

$F(2) = 2 \cdot \: \frac{1}{{2}^{3 \times 2} }$

We multiply the exponent in the denominator to get:

$F(2) = 2 \cdot \: \frac{1}{{2}^{6} }$

We evaluate to get:

$F(2) = 2 \cdot \: \frac{1}{64}$

We now cancel the common factors to get:

$F(2) = \frac{1}{32}$

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3 years ago

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JulijaS [17]

Asking the Math Gods...

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3 years ago

The faces of a cube are numbered 1-6. if the cube is tossed once what is the probability that a prime number or a number divisib

Bad White [126]

Answer:

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Divisible by 2 - 2, 4, 6

One is NOT a prime number.

So, there are 5 out of 6 numbers that are even or are prime.

This leaves only 1 number that isn't.

So, the probability is 5/6 that the number rolled will be prime or even.

Step-by-step explanation:

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4 years ago

Write an equation for the exponential function represented in the graph below.

joja [24]

Answer

150

Step-by-step explanation:

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3 years ago