You use system of equations
30x+60y=1950
x+y=50
Isolate the x so, x=50-y
30(50-y)+60y=1950
1500-30y+60y=1950
1500+30y=1950
30y=450
y=15
Replace y with 15 in x+y=50
x+15=50
x=35
Then in order to confirm if these values are correct, you pluck them into the first equation, 30x+60y=1950
30(35)+60(15)=1950
1050+900=1950
1950=1950
Therefore proving the values true (:
800m is greater than 799,999mm
Answer:
14,400
Step-by-step explanation:
I'm assuming this is multiplication so it would be 14,400
7=3x-5
12=3x
4=x
Hope this helps
42 + 5 * 32 - 42 ÷ 23
I am going to use the PEMDAS order. Parenthesis, Exponents, Multiply, Divide, Add, Subtract
Multiply ⇒ 5 * 32 = 160
42 + 160 - 42 ÷ 23
Divide ⇒ - 42 / 23 = -1.83
42 + 160 - 1.83
Add ⇒ 42 + 160 = 202
202 - 1.83
Subtract ⇒ 202 - 1.83 = 200.17
42 + 5 * 32 - 42 ÷ 23 = 200.17