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3 years ago

HELP ASAP!!? HELP ME PLEASE!! 10 POINTS

Mathematics

1 answer:

masha68 [24]3 years ago

3 0

Answer:

D) 3x²y

Step-by-step explanation:

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What is the value of 6.3-(2 - 1.1)•4

postnew [5]

Answer:

2.7

Step-by-step explanation:

Using PEMDAS you do 2-1.1 first which is is 0.9 then you multiply it by 4 you get 3.6 and then you subtract that by 6.3 and you get 2.7

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3 years ago

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A rectangular prism has a length of 2 1/2 m, a width of 4 m, and a height of 2 1/4 m. what is the volume of the prism?

malfutka [58]

Volume of the rectangular prism is22.5 you just multiply everything together
2.5*4*2.25

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4 years ago

Lewis rolls a number cube and then chooses a card from a set of cards numbered 1 through 5. What is the probability that he will

IceJOKER [234]

Answer:

$\frac{1}{5}=0.2$

Step-by-step explanation:

The general formula for a probability is:

$P=\frac{FavorableEvent}{TotalEvents}$

The favorable events for the cube to fall in a even number are:

2, 4, and 6 ⇒ 3 favorable events

and in the cube the total events are:

1, 2, 3, 4, 5, 6 ⇒ 6 total events

So the probability of rolling an even number in the cube is:

$P=\frac{3}{6}\\\\\\ P=\frac{1}{2}$

Now we do something similar to find the probability to choose a card with an even number.

The favorable events for an even numbered card are:

2, 4 ⇒ 2 favorable events

and the total number of events in the cards is:

1, 2, 3, 4, 5 ⇒ 5 total events

Thus, the probability to choose an even numbered card (according to the probability formula) is:

$P=\frac{2}{5}$

And finally, since we want both things to happen we must multiply both obtained probabilities:

the probability that he will roll an even number and choose an even numbered card:

$P=\frac{1}{2}*\frac{2}{5} \\ \\P=\frac{2}{10} \\\\P=\frac{1}{5} =0.2$

The probability is 1/5 which is equal to 0.2 or 20%

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3 years ago

What is the probability of getting 6 as a product explanation and calculation

Mrrafil [7]

For an individual die roll, the probability of rolling 6 is \dfrac{1}{6}

Effectively, this problem is asking for P(\text{1st roll is 6}\cap\text{2nd roll is 6})P(1st roll is 6∩2nd roll is 6).

Using the rule of product, this is:

\dfrac{1}{6}\times\dfrac{1}{6}=\dfrac{1}{36}

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2 years ago

Shelly and Terrence completed a different number of tasks in a game. Shelly earned 90 points on each task. Terrence's total poin

fgiga [73]

I'm thinking maybe x is supposed to represent the number of tasks completed because it states Shelly earned 90 points on each task. Then when put together it may look like this, let's say there are 4 tasks= Ex.90 times the 4 tasks minus 20 points which would total the points Terrence's has earned. So i believe x is the total tasks. Hope I didn't make it confusing...

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4 years ago

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