Your solving for variable x
do move all the terms containing x to the left and all other terms to the right
so we going to add -0.5y to each side of the equation
0.2x + 0.5y + -0.5y = 4 + -0.5y
them combine like terms 0.5y + -0.5y =0.0
0.2x +0.0 =4 + -0.5y
0.2x = 4 +-0.5y
Divide each side by 0.2
x= 20 +-2.5y
x=20+ -2.5y
Answer:
24
Step-by-step explanation:
Use Pythagorean theorem,
base² + altitude² = hypotenuse²
7² + altitude² = 25²
altitude² = 25² - 7²
= 625 - 49
= 576
altitude = √576
altitude = 24
Answer:
6 years old
Step-by-step explanation:
First, turn the information given in words as equations. Use variables to represent the people:
let A be Addison's age
let B be Bailey's age
let C be Christopher's age
A = 3B (Addison is 3 times as old as Bailey)
B = 2.5C (Bailey is 2.5 times as old as Christopher)
A + B + C = 66 (the sum of their ages is 66) (sum means addition)
Start with the equation for the sum of their ages (A + B + C = 66). You have other equations that can replace the variables in this equation.
A + B + C = 66
(3B) + B + C = 66 Replace A with 3B (because A = 3B)
4B + C = 66 Collect like terms (3B + B = 4B)
4(2.5C) + C = 66 Replace B with 2.5C (because B = 2.5C)
10C + C = 66 Collect like terms (10C + C = 11C)
11C = 66 Isolate "C"
11C/11 = 66/11 Divide both sides by 11 to cancel out 11 on the left side.
C = 6 Christopher's Age
Therefore Christopher is 6 years old.
The first answer N(t) = 1.95^t
Answer:
y=5x-5
Step-by-step explanation:
we start from -5 and go rise/run so its 5
