Answer:
2.33 Seconds
Step-by-step explanation:
The equation y = -6t^2 - 10t + 56 expresses the height of a ball at a given time, t, on the planet Mars. We are also given that the ball is thrown with a velocity of 10 feet per second with the initial height of 56 feet.
To find the amount of time to reach the ground, we can say that the time being found will be when the ball is on the ground, or when y = 0. So we simply set our equation to 0 and solve for t.
y = -6t^2 - 10t + 56
0 = -6t^2 - 10t + 56
0 = -1 (6t^2 + 10t + -56)
0 = -1 (3t - 7) (2t + 8)
(3t - 7) = 0 OR (2t + 8) = 0
3t = 7 OR 2t = -8
t = 7/3 OR t = -4
Since time will not be negative, we will want to choose the positive solution for this quadratic equation.
Hence, the amount of time for the ball to hit the ground will be 7/3 seconds or 2.33 seconds.
Cheers.
Answer:
3 and 1/2 units
Step-by-step explanation:
Square root of (1 - -2 and 1/2)^2 + (-3 - -3)^2
Square root of 3 and 1/2^2 + 0^2
Square root of 12.25 = 3.5
Answer: 0.3821
Step-by-step explanation:
Let x be the random variable that represents the wages.
Given: Workers have an average wage of $9.00 per hour with a standard deviation of $0.50.
The probability of obtaining a sample mean less than or equal to $8.85 per hour:
The required probability = 0.3821
<h2>
Answer:</h2><h2>
The product of (-6) (-3) by distributive property is 18</h2>
Step-by-step explanation:
Distributive properties are used in arithmetic multiplication and division to reduce the time and to answer faster.
(-6) (-3) can be written as (-6) (-2 (+) -1)
By distributive property of multiplication
(-6) (-2 (+) -1) ={ (-6) (-2) + (-6) (-1) }
= { 12 + 6} = 18
since the product of ( - ) ( - ) = ( + )
multiplying two negative number gives a positive number.
Therefore the answer is 18.
-36 i think i dont really know sry!! :(
