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3 years ago

11

Choose the correct equation for the line shown on the graph below

1 answer:

Romashka [77]3 years ago

7 0

Step-by-step explanation:

We can write the equation of a straight line as y=mx+b, with m being the slope. We know two points to be (-4,0) and (0,-1) in the (x,y) format. The slope is change in y/change in x, so we can subtract -1 from 0 (-1 is the second y coordinate) and 0 from -4 (0 is the second x coordinate) to get 1/(-4) as our slope. Then, we plug a point in, like (0,-1). We plug that into our formula, y=mx+b. We know that x=0, y=-1, and m(slope)=-1/4, so we can plug that in to get -1=(-1/4)(0)+b, or -1=b. Our equation is then y=(-1/4)x+-1 as our equation should have y and x left open for specific points

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The area of a rectangular community the garden is 300 square feet. The length of a rectang!

FromTheMoon [43]

Answer:

30, 10

Step-by-step explanation:

length=x

wdith=y

xy=300, x=3y

replace x with 3y in the first equation to get

3y^2=300

y^2=100

since you cant have a negative side of a garden, y=10. x=30.

7 0

3 years ago

Write the slope-intercept equation

satela [25.4K]

Answer:

ok so I think it's -3:3

Step-by-step explanation:

hopefully thats right

8 0

2 years ago

In the United States, the mean and standard deviation of adult men's heights are 70 inches (5 feet 10 inches) and 4 inches, resp

Artyom0805 [142]

Answer:

$P(X>72)=P(\frac{X-\mu}{\sigma}>\frac{72-\mu}{\sigma})=P(Z>\frac{72-70}{4})=P(z>0.5)$

And we can find this probability using the complement rule and the normal standard table:

$P(z>0.5)=1-P(z$

And the best solution would be:

c. 0.3085

Step-by-step explanation:

For this case we can convert all the values to inches in order to standardize the solution:

$5ft * \frac{12 in}{1ft}= 60 in$

$6ft * \frac{12 in}{1ft}= 72 in$

Let X the random variable that represent the heights of US mens, and for this case we know the distribution for X is given by:

$X \sim N(70,4)$

Where $\mu=70$ and $\sigma=4$

We are interested on this probability

$P(X>72)$

We can use the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

Using this formula we got:

$P(X>72)=P(\frac{X-\mu}{\sigma}>\frac{72-\mu}{\sigma})=P(Z>\frac{72-70}{4})=P(z>0.5)$

And we can find this probability using the complement rule and the normal standard table:

$P(z>0.5)=1-P(z$

And the best solution would be:

c. 0.3085

5 0

3 years ago

Helppooooopopopppppp

myrzilka [38]

Answer:

$2\pi \: r$

<h3>4th answer is correct</h3>

Step-by-step explanation:

$2 \times \pi \times r$

7 0

3 years ago

This is pretty hard

dedylja [7]

Answer:

yeah this is 8 units to the x axis, I hope I'm right! See ya! Any question or comments, pls tell me, thanks!

Step-by-step explanation:

7 0

3 years ago