3 years ago

What is the slope of a line that is perpendicular to a line whose equation is −2y=3x+7 ?

Mathematics

1 answer:

Nina [5.8K]3 years ago

5 0

2/3X
perpendicular slope is opposite of the sign and flip the fraction

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Consider a binomial distribution of 200 trials with expected value 80 and standard deviation of about 6.9. Use the criterion tha

mote1985 [20]

Answer:

The correct answer is option 'a' : 120 is more than 2.5 standard deviations above the expected value.

Step-by-step explanation:

For an exponential distribution we have

The expected value μ = 80

No of trails n = 200

Thus we have

$p=\frac{80}{200}=0.4$

The deviation is related to expected value and probability as

$\sigma =\sqrt{np(1-p)}\\\\\therefore \sigma =\sqrt{200\cdot 0.4\cdot (1-0.4)}=6.9$

Thus the values between the given deviation is

$x_{1}=80-2.5\times 6.9=62.75\\\\x_{2}=80+6.9\times 2.5=97.25$

Now since 120 successes are out of the range of [62.75,97.25] thus 120 is more than the expected value.

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3 years ago

A property was assessed at 25% of value with a tax rate of $12 per hundred. if the taxes totaled $11,400, what was the value? 1

shusha [124]

11400 ÷12 = 950 hundreds

95000 x 100/25 = $380,000 <== value of the property

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3 years ago

27 players for 12 spots

labwork [276]

Answer: 27/12=2.25

Pretty simple:)

Step-by-step explanation:

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3 years ago

The measure of the supplement of an angle is 20° more than three times the measure of the original angle. find the measures of t

viva [34]

If the original angle is x degrees then its supplement is 180 - x degrees.

we have the equation:-

180 - x = 3x + 20

160 = 4x

x = 40

The original angle is 40 degrees and its supplement is 140 degrees

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4 years ago

Y - 2x =3 Solve for Y

k0ka [10]

Answer:Add x to both sides of the equation.y=3+2x

Step-by-step explanation:

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