Divide cost by ounces. The lowest cost per ounce is the better buy.
2.88/8 = 0.36
4.56/12 = 0.38
9.10/26 = 0.35
The 26 ounce package is the better buy.
21)
PT = TQ
Given PT = 4x - 6 and TQ = 3x + 4
so
4x - 6 = 3x + 4
Subtract 3x from both sides
4x - 6 - 3x = 3x + 4 - 3x
Simplifying
x - 6 = 4
Add 6 to both sides
x - 6 + 6 = 4 + 6
Simplifying
x = 10
PT = 4(10) - 6 = 40 - 6
PT = 34
Answer
PT = 34
Answer:
y = x + 3 is red line.
y = -3x-2 is green line.
y = -x-7 is black line.
y = 2x + 1 is blue line.
Step-by-step explanation:
first we look at up on both and y intercepts
then find a line.
y = x + 3
x intercept is : x + 3 = 0 so x = -3
y intercept is : 0 + 3 = 0 so y = 3
y = -3x-2
x intercept is : -3x-2 = 0 so x = -2/3
y intercept is : -3*0 -2 = 0 so y = -2
y = -x-7
x intercept is : -x -7 = 0 so x = -7
y intercept is : 0 -7 = 0 so y = -7
y = 2x+ 1
x intercept is : 2x+1 = 0 so x = -1/2
y intercept is : 0*2 + 1 = 0 so y = 1
therefor :
Answer:
y = x + 3 is red line.
y = -3x-2 is green line.
y = -x-7 is black line.
y = 2x + 1 is blue line.
Answer: Yes they are right triangles
Explanation:
The square grid markers help us line up the angles to see that angle OBC is a 90 degree angle, and so is angle OB'C'. Any time a vertical and horizontal line meet up is when you have a 90 degree angle. A right triangle is one where it has a 90 degree angle (aka a right angle).
Extra info: it can be shown that triangle OBC is similar to triangle OB'C', which leads to the fact that the triangles are proportional.