The side of this triangle is about 23.3345237792
Answer:
6.15.
Step-by-step explanation:
3.75 + 2 2/5
= 3.75 + 2.40
= 6.15.
The area is(s^2)/2-(900/5)/2=90
Answer:
7/10
Step-by-step explanation:
To find how many of x are y, you solve <em>y/x</em>.
With our numbers, we have <em>7/6 ÷ 5/3</em>.
We can turn that into <em>7/6 × 3/5</em> = <em>21/30</em> = 7/10.
Answer:
See below
Step-by-step explanation:
(1) 2x + 3y = 15
(2) x - 3y = 3
First step:
Add Equations (1) and (2).
Reason:
The y terms have the same coefficient (3). If I add +3 and -3, the two terms will cancel each other (be eliminated).
How it helps:
If I eliminate the y terms, I have only one variable, the x variable, to deal with.
(1) 2x + 3y = 15
(2) x - 3y = 3
(3) 3x = 18
I can then easily solve Equation (3) for the value of x.
