Answer:
Sonja invested for 5 years.
Step-by-step explanation:
First you have to find how much money she gets in one year.
To do this you would have to multiply 15,000 and 2.8.
15,000 x 2.8 = 42000
You move the decimal 2 spaces forward since there are 3 zeros in 15,000 and one decimal place in 2.8.
This gives you 420.
To find how many years it takes for her to make $2100 you have to divide
2,100/420.
This gives you 5, which means that she invested for 5 years.
If we put the parabola in a coordinate system with vertex at the origin and facing the positive x axis. We have the following points lying on the curve:
(4, 8), (4, -8)
For parabola facing right:
y2 = 4ax
Substituting either coordinates to solve for a:
a = 4
Therefore, the microphone should be placed 4 inches from the bottom of the disk.
Answer:
Step-by-step explanation:
Let x be the variable of the required quadratic equation.
are the roots of the required quadratic equation.
are factors of the required quadratic equation.
is the required quadratic equation
Answer:
S = 9.9
Step-by-step explanation:
First, multiply by -3 to remove fractions:
so:
S - 38.4 = -28.5
Take all values to one side by adding 38.4 to both sides
S = 9.9
Answer:
below⬇⬇⬇⬇⬇⬇
Step-by-step explanation:
since the table mostly gives us the answer, i think its:
=![\frac{200}{22.4}](https://tex.z-dn.net/?f=%5Cfrac%7B200%7D%7B22.4%7D)
⬆⬆⬆⬆that's your answer <3333