Answer:
7/10 or 0.7
Step-by-step explanation:
cross multiply to get 40x+20=48
subtract 20 from both sides to get 40x=28
divide both sides by 40 to get 7/10
HOPE THIS HELPS!!!:)
The mean is the average of the numbers: a calculated "central" value of a set of numbers.
Therefore: If the amount spent on books per month by all her classmates is leveled that amount would be $30
To calculate it: add up all the numbers, then divide by how many numbers there are
I believe the answer is 375
Standard form is when you add up all of the polynomials, with the higher exponents on the left and lower on the right. Degree is the value of the biggest power.
Standard Form: -4x^4 + 13x^2 - 12x + 6
Name: Fourth degree polynomial
We need to find the derivative of that equation with respect to x. The derivative of x^3 is 3x^2, the derivative of 3x^2 is 6x, and the derivative of any constant is always 0. Use the power rule for derivatives that says

. Our derivative, then, is

.