Answer:
n = ±6 .
Step-by-step explanation:
A quadratic equation is given to us and we need to find out the solution of the given equation . The given equation is ,
Subtracting 18 both sides ,
Multiplying both sides by -2 ,
On simplyfing , we get ,
Putting squareroot both sides ,
This equals to ,
<u>Hence</u><u> the</u><u> </u><u>value</u><u> of</u><u> </u><u>n </u><u>is </u><u>±</u><u>6</u><u> </u><u>.</u>
Answer:
t = D/r
Step-by-step explanation:
you rearrange the equation so that is the subject. when you bring something over the equal sign, it reverses the function so D = r×t becomes t = D/r
<span>
1. y=-4x+5
2. y=3x-8
3. Roberta had $50 before she started to save money each week.</span><span>
</span>
Answer:
A
Step-by-step explanation:
I hope this helps and sorry if I'm wrong!
<span>To write 215% as a decimal you can approach the problem two ways. You can divide 215 by 100.
215/100 = 2.15
You can also move the decimal two places to the left 215.0 = 2.15
To write 2.15 as a fraction you will place 215 over 100. {215/100}. You will then want to write this fraction in it’s simplest form. The greatest common denominator is 5 so you will then divide the numerator and denominator by 5.
215/5 = 43
100/5 = 20
215/100 = 43/20
To write this fraction as a mixed fraction you would divide 43 by 20.
43 ÷ 20 = 2 with a remainder of 3
This is written as: 2 3/20</span>
