Answer:
-4
Step-by-step explanation:
Substitute the value of the variable into the equation and simplify.
Step-by-step explanation:
4⁵ × 4^-7 / 4^-2
it is important to understand that a negative exponent means 1/...
a^-n = 1/(a^n)
in that sense we have therefore
4⁵ × 1/4⁷ × 4² (as (1/ 1/a^n) = a^n)
4⁵ × 4² × 1/4⁷ = 4⁷ × 1/4⁷ = 1
so, "1" is the fully simplified expression equal to the original expression.
Answer:
First number 2
Second number 1
Step-by-step explanation:
Let the first number = x
Let the second number = 3x - 5
Equation
x + 3x - 5 = 3
Solution
x + 3x- 5 = 3 Combine
4x - 5 = 3 Add 5 to both sides
4x - 5 + 5 = 3 + 5 Combine
4x = 8 Divide by 4
4x/4 = 8/4 Combine
x = 2
3x -5 = 3(2)- 5 = 1
Answer:
If it is in y=mx+b form, you use your slope.
Step-by-step explanation:
In the equation y=5x+0, you would graph a point at (0,0). Next you would go up five and to the right one b/c 5 is really 5/1. The top number tells up or down and the bottom number tells you left or right. Left/down is negative and right/up is positive. In the equation y=4x-3, you would plot a point at (0,-3). Then go up four and right one. In the equation y=1/5 x+4, you would plot a point at (0,4). Then go up one and to the right 5.
The number that should be added to both sides is 16 because its half of b, which is then squared. You then get (x+4)^2=20, which you then square root both sides and get x+4=+-20 and then subtract the 4 to get x=-4+-20