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3 years ago

WILL MARK BRAINLIEST ONLY HAVE 10 MINUTES

Mathematics

1 answer:

borishaifa [10]3 years ago

6 0

Answer:

I think it is (2,2) but im not sure.

Step-by-step explanation:

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What is the slope of the line that is parallel to y=−5x+7?

zheka24 [161]

Answer:

-5

Step-by-step explanation:

<u>Slope- intercept form:</u>

y= mx +c, where m is the slope and c is the y-intercept

Since the given equation is already in the slope-intercept form, we can identify its slope by looking at the coefficient of the x term. Here the coefficient is -5, thus the slope of the given line is also -5.

Parallel lines have the same slope. Thus, the slope of the line that is parallel to y= -5x +7 will have a slope of -5.

3 0

3 years ago

A soccer player kicks a ball 6.5 meters. How much time is needed for the ball to travel this distance if its velocity is 22 mete

Alisiya [41]

Answer:

0.3 meters per second

Step-by-step explanation:

Divide 6.5 by 22.

8 0

3 years ago

The ratio of two numbers is 6 : 8. The sum of the numbers is 28. What are the two numbers?

Otrada [13]

Answer:

12 and 16 or 12:16

6 x 2 = 12

8 x 2 =16

12 + 16 = 28

Step-by-step explanation:

5 0

3 years ago

Find a vector function that represents the curve of intersection of the paraboloid z=3x2+2y2 and the cylinder y=6x2. Use the var

Cerrena [4.2K]

Answer:

$\vec{r(t)}=t\hat{i}+6t^2\hat{j}+(3t^2+72t^4)\hat{k} \text{ For }t \in (-\infty, \infty)$

Step-by-step explanation:

First plug the equation of y into the equation of z, so that we get their intersection:

We plug

$y=6x^2$

Into: $z=3x^2+2y^2$

So, we get:

$z=3x^2+2(6x^2)^2\\z=3x^2+2(36x^4)\\z=3x^2+72x^4$

Then we set

$x=t$

And plug that in the equation $y=6x^2$ and the one we just got for z.

So that we get:

$y=6t^2, z=3t^2+72t^4$

Therefore, the vector function that represents the curve of intersection is:

$\vec{r(t)}=t\hat{i}+6t^2\hat{j}+(3t^2+72t^4)\hat{k} \text{ For }t \in (-\infty, \infty)$

3 0

3 years ago

If other factors are held constant, which combination of sample characteristics would produce the narrowest confidence interval

anzhelika [568]

Answer:

The correct option is C) large sample size (n) with small variance.

Step-by-step explanation:

Consider the provided information.

It is given that the other factors are held constant, and we want the narrowest confidence interval for a population mean.

Confidence interval for a population mean is directly proportional to variance and inversely proportional to the sample size.

If we increase the variance, CI will increase. But we want the narrowest CI, so variance should be small.

As CI is inversely proportional to sample size, therefore if we increase the sample size CI will decrease.

Hence, the correct option is C) large sample size (n) with small variance.

3 0

3 years ago