Answer:
x=112
Step-by-step explanation:
x/2-18=38
first add +18
x/2=56
now multiply by 2
x=112
Answer
Find out the how many pounds of metal are in 1,950 lb of ore .
To proof
let us assume that the pounds of metal are in 1,950 lb of ore be x .
As given
In an ore, 9.8% of its total weight is metal.
ore weight = 1,950 lb
9.8% is written in the decimal form

= 0.098
Than the equation becomes
x = 0.098 × 1950
x = 191.1 pounds
Therefore the 191.1 pounds of metal are in 1,950 lb of ore .
Hence proved
Answer:
a=45
Step-by-step explanation:
tan a= 1
tan a= tan45
a=45
Answer:
19.65 left
Step-by-step explanation:
The total amount that he has is 3 * 12 = 36 dollars.
From this he buys a CD for 15.00
There is a 9% tax on 15 dollars 15*9/100 = <u> 1.35</u>
Amount spent = <u> 16.35</u>
Amount left 19.65