Answer:
C. 1.4x + 1.8y = 79.8
x + y = 53
Step-by-step explanation:
The problem statement gives rise to two equations, one for the amount of money made, and one for the number of items sold. If x and y represent the numbers of items, and if 53 items were sold, then one of the equations will be ...
x + y = 53
This is sufficient to let you choose the correct answer.
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Since "x" items were sold for $1.40 and "y" items were sold for $1.80, the sales revenue will be the sum of products of price and quantity:
1.40x +1.80y = 79.80
This confirms the choice of answer.
Answer:
(4y-2)-(2y+0)
Step-by-step explanation:
you add up all the variables
7y+3y and -4y+2
Answer:
M = -2
b = -10
Step-by-step explanation:
First we need to find the slope
m = (y2-y1)/(x2-x1)
m = (-8 -0)/(-1- -5)
= (-8-0)/(-1+5)
= -8/4
= -2
We now want to find the y intercept
y = mx+b is the slope intercept form of the equation
y = -2x+b
Using the point (-5,0)
0 = -2(-5) +b
0 = 10+b
Subtract 10 from each side
-10 = 10-10+b
-10 =b
The y intercept is -10
y= -2x-10
We have:
4 triangles with the base b = 5ft and the height h = 6ft
4 rectangles with the lenght l = 5ft and the width w = 4ft
1 square with side a = 5ft.
The formula of an area of a riangle:
Substitute:
The formula of an area of a rectangle:
Substitute:
The formula of an area of a square:
Substitute:
The Surface Area of composite solid:
Substitute:
<h3>Answer: The Surface Area of the composite solid is 165 ft².</h3>
(8x^2+2x+8)+(3x^3+7x+4)=
8x^2+2x+8+3x^3+7x+4
3x^3+8x^2+(2+7)x+12=
3x^3+8x^2+9x+12
Answer: Option A. 3x^3+8x^2+9x+12
