Answer:
(2,22)
Step by step explanation:
(x,22) is the solution of the equation y=9x+4
9x+4= 22
=>9x= 22-4
=>9x=18
=>x= 2
Answer:
see below
Step-by-step explanation:
The perimeter is the sum of all the sides
A + B+ C+ D + E = 190
x+5 + x+10 + -5(x-20) + 6x-10+ 2x+4(20-x) = 190
Distribute
x+5 + x+10 -5x+100 +6x-10 +2x +80 -4x = 190
Combine like terms
x + x -5x-4x+6x +2x +80+10+100 -10+5 = 190
x +185 = 190
Subtract 185 from each side
x+185-185 = 190-185
x = 5
Side A = x+5 =5+5 =10
Side B = x+10 = 5+10 =15
Side C = -5(x-20) = -5(5-20) = -5(-15) = 75
Side D = 6x-10 = 6(5) -10 =30-10 = 20
Side E = 2x+4(20-x) = 2*5 +4(20-5) = 10+4(15) = 70
Answer:
$2.50 per gallon
Step-by-step explanation:
From the graph we can tell 2 gallons of gas costs 5 dollars
$5/ 2 gallons
Divide the top and bottom by 2
= $2.50/ 1 gallons
Answer:
y=4x+9
Step-by-step explanation:
Slope-intercept form is y=mx+b where m is the slope, and b is the y-intercept. Given the numbers, for both, you can plug them in and get the equation y=4x+9.
10.5 is a rational number because it is a number that can be turned into a fraction.
10.5 = 10 1/2 = 21/2