(4x+5)(x^2+2x+3) help?

vovangra [49]

Hey there! :D

First, find the slope.

m= (y2-y1)/(x2-x1) I'm using points (0,3) and (1,5)

m=(5-3)/(1-0)
m= 2/1
m=2

Now, plug that into point slope. Use point (1,5) m=2

y-y1= m(x-x1)

y-5= 2(x-1)

Distribute.

y-5=2x-2

Add 5 to both sides.

y=2x+3 == equation of the line in slope intercept form. y=mx+b

I hope this helps!
~kaikers

8 0

4 years ago

Find the midpoint of the segment with the endpoints (-2,-6) and (8,8)

Usimov [2.4K]

Answer:

(3,7)

Step-by-step explanation:

no time thank you

7 0

3 years ago

Which of the following are proper units of mass in the metric system

sammy [17]

kilogram and milligram are proper units of mass in the metric system . Anything with the suffix -gram is a mass measurement Hope this helps!

7 0

4 years ago

A demographer wants to measure life expectancy in countries 1 and 2. Let μ1 and μ2 denote the mean life expectancy in countries

Art [367]

Answer:

For this case we want to test if life expectancy in country 1 is more than 10 years lower than in country 2, (alternatibe hypothesis), so then the system of hypothesis are:

Null hypothesis: $\mu_1 \leq \mu_2 -10$

Alternative hypothesis: $\mu_1 > \mu_2 -10$

Or equivalently:

Null hypothesis: $\mu_1 - \mu_2 \leq 10$

Alternative hypothesis: $\mu_1 - \mu_2 >10$

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

Solution to the problem

For this case we want to test if life expectancy in country 1 is more than 10 years lower than in country 2, (alternatibe hypothesis), so then the system of hypothesis are:

Null hypothesis: $\mu_1 \leq \mu_2 -10$

Alternative hypothesis: $\mu_1 > \mu_2 -10$

Or equivalently:

Null hypothesis: $\mu_1 - \mu_2 \leq 10$

Alternative hypothesis: $\mu_1 - \mu_2 >10$

7 0

3 years ago

If you were to solve the following system by substitution, what would be the best variable to solve fro and from what equation?

Svetlanka [38]

I would say solve for x in the second equation

4 0

4 years ago