Answer:
3
Step-by-step explanation:
Intersections on the x axis occur when y = 0. f(x) is another term for y, so set f(x) equal to zero and solve for the two possible x's.
0 = x^2 - 3x - 40
0 = (x-8)(x+5)
By solving for x, you get 8 and -5. 8 and -5 added together will equal 3.
Answer:
7. Slope = -5
Y-intercept = -3/4
8. Slope = 1/4
Y-intercept = 5
Step-by-step explanation:
y = mx + b
Slope = m
Y-intercept = b
Hi!
<h3>The perimeter is equal to </h3>
<u>l + l + w + w = 62</u>
<h3>The length is 3 feet longer than the width so...</h3>
<u>w + 3 + w + 3 + w + w = 62</u>
<h3>Simplify</h3>
<u>4w + 6 = 62</u>
4w + 6 - 6 = 62 - 6
4w = 56
4w/4 = 56/4
<u>w = 14</u>
<u>14 + 3 = 17</u>
<h2>The width is 14 and the length is 17. </h2>
Hope this helps! :)
-Peredhel
Using a system of equations, it is found that the trains will be side by side in 15 seconds.
<h3>What is a system of equations?</h3>
A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
In this problem, the <em>equations </em>are:
They will be side-by-side when:
Hence:
The trains will be side by side in 15 seconds.
More can be learned about system of equations at brainly.com/question/24342899
Answer:
19.68
Step-by-step explanation:
I had to look at it and make sure
