Answer:
20 units
Step-by-step explanation:
Since the triangle is equilateral then all 3 sides are equal in length.
Equate any 2 sides and solve for x
4x = 3x + 5 ( subtract 3x from both sides )
x = 5
hence
4x = 4 × 5 = 20
3x + 5 = (3 × 5) + 5 = 15 + 5 = 20
7x - 15 = (7 × 5) - 15 = 35 - 15 = 20
The lengths of the sides are 20 units
100 3/4 x 75 1/2
25 x 3 x 75 1/2. (Divided by 4 to 100 and 4 to get 25)
25 x 3 x 75 1/2 ( multiple everything on top)
5625/2 ( then divided normally)
2812.5 or 2812 1/2
There appears to be a typing error in the second equation.
Still the answer is (7,10) because it is the only ordered pair that works for the first equation.
Answer:
25
Step-by-step explanation:
25-3=22
Answer:
9x+7
Step-by-step explanation:
This is because you combine like terms:
5x and 4x contain the same variable and amount of variables so you can combine them making 9x. You are then left with two numbers 5, and 2 they aren't attached to any variables and are in common in that way so you combine them too! This makes them 7, lastly you make it into an expression so you can't combine 9x and 7 so you leave it as 9x+7!!!
