Answer:
Step-by-step explanation:
If two similar triangles have a scale factor of a : b, then the ratio of their perimeters is a : b
(.perimeter ABC) /( perimeter DEF) = (AB)/(DE)
Example:Triangle(ABC) with perimeter 24 . Find new triangle (DEF) using proportion 9/6
24/perim DEF = 6/9
Cross multiplication
(24*9) = 6*( perimeter of DEF)
216 = 6*(perimeter of DEF
Divide both sides by 6
36 = DEF
Triangule with perimeter 24 (find new perimeter)
The perimeter of the new triangle using proportion 6/9 is 36
Subtract -9 from both sides.
x2+6x−(−9)=−9−(−9)
x2+6x+9=0
Factor left side of equation.
(x+3)(x+3)=0
Set factors equal to 0.
x+3=0 or x+3=0
x=−3
Answer:
x=−3
The answer is attached in the photo
7 DOLLARS A WEEK
because you would add 5 and 2 each week
You are going to bake cookies. You need 1 1/8 cups of material. You have 3/4 cups of flour and 1/8 cups of milk. How much sugar do you need if you already have 7/8 cups worth of material?
(Hint:1 1/8 (one and one-eighth) = 9/8)
9/8( The amount of material we need) - 7/8(the amount of material we have)
= 2/8 or 1/4
You will need 1/4 cup of sugar.
