Answer:
x=25
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
(52)(x)−(4)(5)x1−125=0
25x+−20x+−125=0
(25x+−20x)+(−125)=0(Combine Like Terms)
5x+−125=0
5x−125=0
Step 2: Add 125 to both sides.
5x−125+125=0+125
5x=125
Step 3: Divide both sides by 5.
5x/5=125/5
x=25
The answer is 8/12 and 10.25/12 or if simplified 2/3 and 5.125/6
The value of y when x = 10 is 22.5 ⇒ 1st answer
Step-by-step explanation:
Direct variation is a relationship between two variables that can
be expressed by an equation in which one variable is equal to a
constant times the other
If y varies directly with x, then
- y ∝ x
- y = k x, is the equation of variation where k is the constant of variation
∵ y varies directly with x
∴ y ∝ x
∴ y = k x
To find k substitute x and y by their initial values
∵ y = 9 and x = 4
- Substitute y by 9 and x by 4 in the equation above
∴ 9 = k(4)
- Divide both sides by 4
∴ 2.25 = k
∴ The value of k is 2.25
- Substitute the value of k in the equation above
∴ y = 2.25 x ⇒ equation of variation
∵ x = 10
- To find y substitute x by 10 in the equation of variation
∵ y = 2.25(10)
∴ y = 22.5
∴ The value of y is 22.5
The value of y when x = 10 is 22.5
Learn more:
You can learn more about variation in brainly.com/question/10708697
#LearnwithBrainly
Answer:
Step-by-step explanation:
Hello, we need first to develop and then identify the like terms.
So a = 28.
Thank you
Answer:
$0.95/lb
Step-by-step explanation:
1 ton = 2000 lb
3 tons = 3 × 1 ton = 3 × 2000 lb = 6000 lb
$5700/(6000 lb) = $0.95/lb