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Mathematics

1 answer:

alexandr1967 [171]2 years ago

7 0

Answer:

Step-by-step explanation:

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Yikes mctugg bought 1/2pound of potato salad . He ate 2/3of it for lunch .How much potato salad was left for an afternoon snack

Anna007 [38]

$\frac{1}{2} - \frac{2}{3}( \frac{1}{2}) = \frac{1}{2} - \frac{2}{6} = \frac{3}{6} - \frac{2}{6} = \frac{1}{6} pound$

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3 years ago

An astronaut on the moon throws a baseball upward. The astronaut is 6 ft 6 in tall, and the initial velocity of the ball is 40 f

weqwewe [10]

Answer:

t = 0.293 s and 14.52 s

Step-by-step explanation:

The heights of the ball in feet is given by the equation as follows :

$S = -2.7t^2+40t+6.5$

Where t is the number of seconds after the ball was thrown.

We need to find is the ball 18 ft above the moon's surface.

Put S = 18 ft

$-2.7t^2+40t+6.5=18\\\\-2.7t^2+40t=18-6.5\\\\-2.7t^2+40t-11.5=0$

It is a quadratic equation. Its solution is given by :

$t=\dfrac{-40+\sqrt{40^{2\ }-4\left(-2.7\right)\left(-11.5\right)}}{2\left(-2.7\right)},\dfrac{-40-\sqrt{40^{2\ }-4\left(-2.7\right)\left(-11.5\right)}}{2\left(-2.7\right)}\\\\t=0.293\ s,14.52\ s$

So, the ball is at first 0.293 s and then 14.52 s above the Moon's surface.

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3 years ago

CAN SOMEONE HELP ME PLEASE???

lana66690 [7]

Answer:

Step-by-step explanation: First, you need to write all your data down from least to greatest. Next, count up all the numbers to see how many students. Then you want to find the mean which is average (add then divide). Median is the middle so you will x each number out till you get to the middle, and if the middle is 2 numbers, you find the average of them to find the median. Mode means most often. Range is highest minus lowest. And you can do the next 2.

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A marathon is a race that is 42.195 kilometers long. Joel ran two marathons this year. How many total kilometers did he run betw

nignag [31]

84.39 is ya answer to the question

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3 years ago

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can someone please do this :// I need B done on Question 9 but I'm so mad because no one is giving me a correct fkin answer

Akimi4 [234]

Should be 4 for B because 8-4 would equal 4