Answer:
x=6
Step-by-step explanation:
(x^2 – 3x - 10) = (x + 2)
Factor the term on the left
(x-5) (x+2) =x+2
Divide each side by x+2
x-5 = 1
Add 5 to each side
x-5+5 =1+5
x=6
Answer:
13,087 = 3x + 7,594
Step-by-step explanation:
have a good day
Answer:
The ending balance would be:
EB = Money x (1 + rate)^year
= 53300 x (1 + 4.7/100)^(3.75) = 63318.01
Hope this helps!
:)
Answer: y = -2x + 1
Solution:
To find the the equation use first find the slope using the equation:
m= y2-y1/x2-x1
m = -1-3/1-(-1)
m = -4/2
m = -2
Using the equation below,
y = mx + b
y = y coordinate
m = slope
x = x coordinate
b = y intercept
so to write the equation of line we need to find the y-intercept (b)
substitute the slope (-2) and any of the given pair of coordinates , right now i will be using (1,-1)
y = mx + b
-1 = (-2)(1) + b
-1+2 = b
1 = b
So the line of equation,
y = mx + b
y = -2x + 1
Answer:
x = amount of pure acid to be added = 6.67ml
Step-by-step explanation:
George wishes to increase the percent of acid in 50ml of a 15% acid solution in water to 25% acid, how much pure acid must you add?
let
x = amount of pure acid to be added
15% of 50 + x = 25% of 50 + x
(0.15 * 50) + x = 0.25(50 + x)
7.5 + x = 12.5 + 0.25x
Collect like terms
x - 0.25x = 12.5 - 7.5
0.75x = 5
x = 5/0.75
x = 6.6666666666666
Approximately,
x = 6.67
x = amount of pure acid to be added = 6.67ml