Answer:
<em>~ Jill needs a minimum score of 90% to recieve an average of at least 92% on all her math quizzes ~</em>
Step-by-step explanation:
1. The table shows that her past weeks math quiz scores are: 92, 96, 94, 88
2. If she were to get a mean, or average, of at least 92, we could set up an equation to determine the minimum score she will recieve on her next quiz:
92 + 96 + 94 + 88 + x/ 5 = 92 ⇒ <em>(where x is the minimum score she should recieve on her next quiz to get an average of at least 92%)</em>
3. Now let us solve this equation for x through simple algebra ⇒
92 + 96 + 94 + 88 + x/ 5 = 92 ⇒
370 + x/5 = 92 ⇒
x/5 + 74 = 92 ⇒
x/5 = 18
x = 90
4. <em>Jill needs a minimum score of 90% to recieve an average of at least 92% on all her math quizzes</em>
Answer:
Given that,
The number of grams A of a certain radioactive substance present at time, in years
from the present, t is given by the formula
a) To find the initial amount of this substance
At t=0, we get
We know that e^0=1 ( anything to the power zero is 1)
we get,
The initial amount of the substance is 45 grams
b)To find thehalf-life of this substance
To find t when the substance becames half the amount.
A=45/2
Substitute this we get,
Taking natural logarithm on both sides we get,
Half-life of this substance is 154.02
c) To find the amount of substance will be present around in 2500 years
Put t=2500
we get,
The amount of substance will be present around in 2500 years is 0.000585 grams
Answer:
C
Step-by-step explanation:
Its a quadratic function since it has an x^2 in it. The quadratic term is 6x^2 since it has a square and variable. x is our linear term since a variable =with no power. and -12 is our constant since it isn't a variable.
Total number of pounds of flour in the bakery is 54.36 pounds
<em><u>Solution:</u></em>
Given that,
Twins Bakery has 12 bags of flour in their bakery
Each bag weighs 4.53 pounds
Therefore,
Weight of 1 bag = 4.53 pounds
There are 12 bags
<em><u>Therefore, total number of pounds of flour in the bakery are:</u></em>
Thus we get,
Thus total number of pounds of flour in the bakery is 54.36 pounds