Answer:
2x + 3
Step-by-step explanation:
Given
(x² + 7x + 1) + (- x² - 5x + 2) ← remove parenthesis
= x² + 7x + 1 - x² - 5x + 2 ← collect like terms
= 2x + 3
The probability that a face card can be drawn from a standard deck of cards is 12/52 which can be simplified into 3/13.
The expected value is the product of the probability and the value.
Expected value = (3/13)($1) = $0.23
The difference between the amount spent and the expected value is equal to $0.27.
Answer:
A, 4, -1
It's reflected over the y-axis, so it goes to the right side.
Pittsburgh because -9°F is colder than -7<span>°F</span>
Answer:
Every week, the mass of the sample is multiplied by a factor of 0.81
Step-by-step explanation:
Let's rewrite the base and find the expression whose exponent is just ttt.
(0.97)7t+5=(0.97)7t⋅(0.97)5=(0.977)t⋅(0.97)5
Therefore, we can rewrite the modeling function as follows.
M(t)=(0.97)5⋅(0.977)t
According to this model, the mass of the sample is multiplied by 0.977 every week. Rounding this to two decimal places, we get 0.977≈0.81.
