Use order of operations, or PEMDAS which stands for Parenthesis, Exponent, Division, Addition, and Subtraction.
Do those operations in that order. Can you try?
What will be the first thing you do here, according to PEMDAS?
X = 25.5 mm.
Using the similarity statement given, that ΔABC ~ ΔDEF, we set up a proportion:
8.5/x = 4/12
Cross multiply:
4*x = 8.5*12
4x = 102
Divide both sides by 4:
4x/4 = 102/4
x = 25.5
Answer:
7x + 7
Step-by-step explanation:
2x + 5x = 7x
5 +2 = 7
The perimeter of the triangle is 13.56 units.
The perimeter of a shape on a coordinate plane is found by finding the distance between all points, and then adding them together. It's easier to write it out than to type so I'll attach a photo of my work.
Answer:
3/8 left
Step-by-step explanation:
I can't draw a model but I can still give an explanation.
1/2 required to memorize - 1/8 already memorized = 3/8 left
Maybe draw a rectangle with 8 divisions and label the situation.