The formula for the quadratic formula is x (c in this case) = (-b(+/-)√(b²-4ac))/2a
This is used for an equation in standard quadratic form: ax² + bx + c = 0
1.) Put it in the correct form, if not already in it.
Ex. c² + 6c + 8 = 0
2.) Identify each part of the equation:
a = 1 (the leading coefficient), b = 6 (the coefficient in front of the second variable), c = 8
3.) Plug in each variable answer
c = (-6(+/-)√(6²-4(1)(8))/2(1)
4.) Simplify
c = (-6(+/-)√(36-(4*8))/2
c = (-6(+/-)√(36-32))/2
c = (-6(+/-)√(4))/2
c = (-6(+/-)2)/2
*Here, the equation splits in two. It becomes:
c = (-6+2)/2 AND c = (-6-2)/2
*Simplify again:
c = -4/2 AND c = -8/2
c = -2 AND c = -4
The answers c = -2 and c = -4 would solve the given equation.
Hope this helps! :)
Answer:
FALSE
Step-by-step explanation:
If y varies inversely as x., this is expressed as;
y = k/x
k is the proportionality constant
when y = 3 and x = 4
3 = k/4
k = 3 * 4
k = 12
when x = 15;
y = k/x
y =12/15
y = 4/5
Hence y is not equal to 12 when x = 15.
The correct answer is FALSE
I believe it would be 2, how much water is used to fill a cup
Answer:
78.46
Step-by-step explanation:
Given that
Pop. Standard deviation = 1.61
Sample standard deviation = 2.15
Sample mean = 7.47
Sample size = 45
Recall that
Test stat for chi square
= (n - 1) (sample standard dev/pop standard dev)^2
= 45 - 1 (2.15/1.61)^2
= 44(1.3354)^2
= 44 × 1.78329
= 78.46
Answer:
Hence the 3.28 %or 2/61 of total work will be done .
Step-by-step explanation:
Given:
The pecan crops are harvested for friday and saturday (2days)
To find :
What fraction these 2 days corresponds to the harvesting days?
Solution;
The pecan crops are growing in America in state of Georgia
and consider that in months of October and November pecan crop becomes mature .
Hence the harvesting period is of 2 months considerably .
The month of October and November days are 31 and 30 .
Hence the Total days of harvesting are 61 days.
In these days total Pecan crops will be harvested.(100% work in 61 days)
Now the farmer harvest for 2 days only .
Required fraction=2/61
=0.0327869
=3.28%
Depending upon the crop field and planting answer will vary
But 3.28 % of total work will be done in 2 days on harvesting
