PLEASE HEALPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP PPPPPPPPPPPP (−18)×4

Mathematics

1 answer:

zepelin [54]2 years ago

4 0

Answer:

-18 x 4 = -72

Step-by-step explanation:

a negative times a positive is a negative number.

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What is 5 1/2 * 2 1/3?

storchak [24]

The solution of the given expression will be $12\dfrac{5}{6}$

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition,substraction, multiplication and division.

The given expression will be calculated as:-

$= 5\dfrac{1}{2}\times 2\dfrac{1}{3}\\\\\\=\dfrac{11}{2}\times \dfrac{7}{3}\\\\\\=\dfrac{77}{6}\\\\\\=12\dfrac{5}{6}$

Hence the solution of the given expression will be $12\dfrac{5}{6}$

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1 year ago

**MARKING BRAINLIEST PLEASE HELP**

raketka [301]

Answer:

$\text{1. } v=16t+\frac{h-c}{t},\\\text{2. }90\:\mathrm{ft/s}, \\\text{3. Cannot be determined}$

Step-by-step explanation:

1. The initial equation given to us is $h=-16t^2+vt+c$ . Rearranging the equation to isolate $v$ , we have:

$vt=16t^2+h-c,\\\boxed{v=16t+\frac{h-c}{t}}$

2. Using the equation we rearranged in part 1, we can substitute given values:

$v=16(3)+\frac{131-5}{3},\\v=48+42=\boxed{90\:\mathrm{ft/s}}$

3. We see from our equation in part 1 ( $v=16t+\frac{h-c}{t}$ ) that when $t=0$ , the denominator of our fraction will be equal to 0. Since we cannot divide by 0, the velocity remains undefined and cannot be determined.