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3 years ago

Y=-7 + 2x how to graph

Mathematics

1 answer:

blondinia [14]3 years ago

8 0

I know for 2x you would go up 2 over 1 but I don’t know about -7?? Maybe down

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Angela is planning to cycle 200 km to a hotel for an overnight stay. She cycles at a constant speed of 25km/hr. How long did it

katen-ka-za [31]

Answer: It took her 8 hrs to get there.

Step-by-step explanation:

3 0

2 years ago

Becka can make a bracelet in 2 minutes.

Black_prince [1.1K]

Answer:

2x = y

Step-by-step explanation:

x is how many bracelets made and each bracelet takes 2 minutes to make so x times 2 or 2x and y is the total time took so 2x=y

8 0

3 years ago

Suppose that the distance, in miles, that people are willing to commute to work is an exponential random variable with a decay p

garik1379 [7]

Answer:

m = $\frac{1}{20}$
μ = 20
σ = 20

The probability that a person is willing to commute more than 25 miles is 0.2865.

Step-by-step explanation:

Exponential probability distribution is used to define the probability distribution of the amount of time until some specific event takes place.

A random variable X follows an exponential distribution with parameter m.

The decay parameter is, m.

The probability distribution function of an Exponential distribution is:

$f(x)=me^{-mx}\ ;\ m>0, x>0$

Given: The decay parameter is, $\frac{1}{20}$

X is defined as the distance people are willing to commute in miles.

The decay parameter is m = $\frac{1}{20}$ .
The mean of the distribution is: $\mu=\frac{1}{m}=\frac{1}{\frac{1}{20}}=20$ .
The standard deviation is: $\sigma=\sqrt{variance}= \sqrt{\frac{1}{(m)^{2}} } =\frac{1}{m} =\frac{1}{\frac{1}{20}} =20$

Compute the probability that a person is willing to commute more than 25 miles as follows:

$P(X>25)=\int\limits^{\infty}_{25} {\frac{1}{20} e^{-\frac{1}{20}x}} \, dx \\=\frac{1}{20}|20e^{-\frac{1}{20}x}|^{\infty}_{25}\\=|e^{-\frac{1}{20}x}|^{\infty}_{25}\\=e^{-\frac{1}{20}\times25}\\=0.2865$

Thus, the probability that a person is willing to commute more than 25 miles is 0.2865.

7 0

3 years ago

Pls help me this is for my final text and I’m struggling really bad!!!

vodka [1.7K]

I’m not so sure I fully understand the question. But I would say the rate is 1.

I say this because the line on your graph is a y=mx+b equation.

For every unit it moves over on the X axis it moves the same unit on the Y axis.

I hope this helps.

5 0

3 years ago

Martin had 24

inna [77]

Answer:

its C

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers