45+45+27+27mm=??
when u solve you will get the answer
Given: 27-k · 2 = n
Solution: 27-5 ·2 = n
22 · 2 = n
Answer: 44 option D
Answer:
The expression Riley could have used to find the product of the two numbers is 24 × (30 + 7).
Step-by-step explanation:
The distribution property for multiplication is:
In this case we need to determine the product of 37 and 24.
Compute the product as follows:
Thus, the product of 37 and 24 is 888.
The height that a ball reaches at a certain time t is given by the equation,
h = 2 - 15t + 5t²
We are asked to compute for the values of t that would allow the ball to reach a height of 7 meters.
Substitute the 7 to the equation,
7 = 2 - 15t + 5t²
Transposing,
5t² - 15t - 7 + 2 = 0
Simplifying,
5t² - 15t - 5 = 0
Divide the equation by 5,
t² - 3t - 1 = 0
The values of t can be calculated through the quadratic formula,
t = (-b +/- sqrt(b² - 4ac))/2a
Substituting,
t = (3 +/-sqrt (9 - 4(-1)) / 2(1)
t = 3.3 or t = -0.30
Since, we cannot have t as a negative number hence, our final answer is:
<em> t = 3.3 s</em>
