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3 years ago

Find the equation of the line that passes through the point (-2,7) and is perpendicular to the line y= 2/5x-1/5

Mathematics

1 answer:

-BARSIC- [3]3 years ago

3 0

Step-by-step explanation:

ddhdhdhdhdhdddhdshshshhshshhdhhebebeewshehehehjssdjsjdudsshsusjssowossjjjddjdjddjjjs

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Which graph shows a system with no solutions? Graph A Graph B Graph C y= 2r-1 2y 4x-2 A. Graph C OB. Graph B C. Graph A

REY [17]

Answer:

graph b

Step-by-step explanation:

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3 years ago

Tina spent $6.75 on supplies at the store. She made $2.34 on Monday, and $4.65 on Tuesday. What was Tina's overall profit or los

tiny-mole [99]

Her profit was 0.24 cents. Hope this helps!

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3 years ago

Read 2 more answers

Suppose that the length of a phone call in minutes is an exponential random variable with parameter λ = 1/ 8. If someone arrives

Elis [28]

Answer:

a) P=0.535

b) P=0.204

c) P=0.286

Step-by-step explanation:

The exponential distribution is expressed as

$F(x>t)=e^{-\lambda t}$

In this example, λ=1/8=0.125 min⁻¹.

a) The probability of having to wait more than 5 minutes

$F(x>5)=e^{-0.125*5}=e^{-0.625}=0.535$

b) The probability of having to wait between 10 and 20 minutes

$F(1020)=e^{-0.125*10}-e^{-0.125*20}\\\\F(10$

c) The exponential distribution is memory-less, so it is independent of past events.

If you have waited 5 minutes, the probability of waiting more than 15 minutes in total is the same as the probability of waiting 15-5=10 minutes.

$F(x>15|t^*=5)=F(x>15)/F(x>5)=\frac{e^{-0.125*15}}{e^{-0.125*5}}=e^{-0.125*(15-5)}\\\\ F(x>15|t^*=5)=e^{-0.125*(10)}=F(x>10)=0.286$

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3 years ago

Please help answer this questions

vichka [17]

Answer: Since the dependent variable is the height in cm, and the independent variable is the color of light, then a testable question could be "Will the color of a lamp affect the height of plants?"

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2 years ago

Describe differences between recursive and explicit functions. Explain situations in which using a recursive or an explicit func

Misha Larkins [42]

Explanation:

An explicit function returns a value based only on the arguments given.

y = f(x)

A recursive function returns a value based on the arguments given and on other values of the function.

y = f(x, f(g(x))

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2 years ago