Convert percent into a decimal by moving the percent sign two places to the left.
39% => 0.39
'Of' in math means multiply.
0.39 * 50 = 19.5
Answer: 25
Step-by-step explanation:
B=3÷5×100
=60
D=0.35×100
=35
so, B-D=60-35
25
Answer:
x+2=5
x+3=6
x^2 + 3x + 2 = 0
There are infinetly many equations that contain at least one variable!
Step-by-step explanation:
First, rearrange the quadratic equation:
5x² + 9x - 4 = 0
Now, compare it to the general quadratic equation:
a<span>x² + bx + c = 0
Therefore you get:
a = +5
b = +9
c = -4
And the quadratic formula will be:
x = [-b +/- </span>√(b² - 4ac)] / 2a
= [ -5 +/- √(81 - 4·5·(-4))] / 2·5
= (-5 +/- √161) / 10
We need the dimensions of the pyramid to find the surface area
or if you goofle surface area of a pyramid you can just plug the dimensions in and it will give you an answer