Answer:
11 grades of 85 did Brenda, Robert, and Timothy receive altogether.
Step-by-step explanation:
Let 6x be the number of 85 received by Brenda.
The number of 85 received by Robert is 1/3 of Brenda= 2x
The number of 85 received by Timothy is 1/2 of Brenda= 3x
Then according to the given conditions
6x+ 2x+ 3x
= 11x
So the number of total 85s received by all the three is 11.
11 grades of 85 did Brenda, Robert, and Timothy receive altogether.
Answer:
<em>Math will take over Ana's brain at 4.4 hours</em>
Step-by-step explanation:
<u>Exponential Grow
</u>
The population of the nanobots follows the equation

We must find the value of t such that the population of nanobots is 106 or more, that is

We'll solve the equation

Dividing by 5

Taking logarithms

By logarithms property

Solving for t


Math will take over Ana's brain at 4.4 hours
I = PRT is the formula to use for this.
I = (1900)(.11)(5)
I = 1045
1900 + 1045 = 2945
I need to pay $2945 for the refrigerator.
He was 4 foot. With this I just took .5 and multiplyed it by 4, then subtracted it from 6. Hope this can help! Feel free to message me if you have anymore questions!