Answer:
I believe the answer is -4/3
Step-by-step explanation:
With linear graphs, there's two things you need to find, the y intercept and the slope. The y intercept is literally where the line touches the y axis. Looking at the graph you can see that it's at 900, so your number by itself has to be +900. The slope then is found by seeing how much y changes for every change in x. So you have two points, (20,600) and (40,300) which tell you that the line moves down 300 when it moves across 20. Your slope is then -300/20 which is -15. This goes in front of your x and you get your equation. SO your answer would be
A. <span>y = −15x + 900
Hope I helped:P
</span>
Answer:
a19 = -71.74
Step-by-step explanation:
The general term of an arithmetic sequence with first term a1 and common difference d is ...
an = a1 +d(n -1)
The given 5th and 15th terms tell us ...
-3.7 = a1 +d(5 -1)
-52.3 = a1 +d(15 -1)
Subtracting the first of these equations from the second, we find ...
10d = -48.6
d = -4.86 . . . . . . divide by 10
The 19th term will be ...
a19 = a1 +d(19 -1)
Subtracting the 15th term from this, we find ...
a19 -a15 = 4d
a19 = 4d +a15 = 4(-4.86) +(-52.3)
a19 = -71.74
(5x - 18) - 4x = -36
Let's solve your equation step-by-step.
5x − 18 − 4x = −36
Step 1: Simplify both sides of the equation.
5x − 18 − 4x = −36
5x + −18 + −4x = −36
(5x + −4x) + (−18) = −36 (Combine Like Terms):
x + −18 = −36
x − 18 = −36
Step 2: Add 18 to both sides.
x − 18 + 18 = −36 + 18
x = −18
Answer: ========> x = -18 is the number
Hope that helps!!!! : )
A ratio compares two quantities.
How may days are in May? <span>31
How many days in a year? </span>365
Now, we are being asked to compare may to a year.
Answer: 31 to 365
Now, the other is easy also.
A triangle has 3 sides, and a square has 4.
Answer: 3 to 4
Find equal ratio's
8/12 = 2/3 = 4/6 = 16/24
20/25 = 4/5 = 40/50 = 80/100
Done! Enjoy! :) I hope I helped your son. Take care.
