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3 years ago

Write a slope-intercept equation of a line that passes through (-3,4) and (3,-8)

Mathematics

1 answer:

Umnica [9.8K]3 years ago

4 0

Y=-2x-2 is the right answer

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Find the number of real number solutions for the equation. x^2+5x+7=0

koban [17]

Given a quadratic equation $ax^2+bx+c=0$ , we define the discriminant as

$\Delta = b^2-4ac$

The number of real solutions of the equation depend on the sign of $\Delta$ :

If $\Delta>0$ the equation has two solutions
If $\Delta=0$ the equation has one double solution
If $\Delta$ the equation has no real solutions

In this case, we have

$\Delta = 25-28=-3$

And so this equation has no real solutions.

7 0

3 years ago

I would like to know how to solve this problem.

Darya [45]

Answer: 9

Step-by-step explanation:

$g(-5)=\frac{-5}{5}=-1\\\\(f\circ g)(-5)=f(g(-5))=f(-1)=-3(-1)+6=\boxed{9}$

8 0

2 years ago

Select all the values for that indicate r a positive slope for the line of best fit.

Whitepunk [10]

Answer:

u didn't show anything so I can't help u. can u show a picture or something

8 0

3 years ago

,a man Works five consecutive days for 8 hours 7 and 1/2 hours 8 1/4 hours 6 and 1/2 hours 6 and 3/4 hours how much money will h

Darya [45]

A man works five consecutive and makes $15.50 per hour.

6 0

3 years ago

Read 2 more answers

Which recursive formula can be used to represent the sequence 2,4,6,8,10,...?

White raven [17]

$a_{n}$ represents the next number in the sequence

we can see that there is a common difference between each of the numbers:
4-2=2
6-4=2
8-6=2
10-8=2

$a_{n-1}$ represents the previous number in the sequence

$a_{n}=a_{n-1}+2$ this is the recursive formula for this equation

The last thing we need to do it double check the formula by plugging in numbers

$a_{1}=a_{1-1}+2 \\ a_{1}=a_{0}+2 \\ 2=0+2 \\ 2=2$

we will skip to the last known number and check that one too

$a_{5}=a_{5-1}+2 \\ a_{5}=a_{4}+2 \\ 10=8+2 \\ 10=10$

4 0

3 years ago

Read 2 more answers