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aev [14]
2 years ago
12

The length of a rectangle is 5 less than 3 times its width. The perimeter is

Mathematics
1 answer:
My name is Ann [436]2 years ago
8 0

Answer:

The length is 28 and the width is 11

Step-by-step explanation:

To solve this problem, we can make the width as x.

Since the length is 5 less than 3 times the width, it's going to be 3x - 5

So now we've got the length and width, just need to find the perimeter, which is all the sides added up together. They already gave us the perimeter, so we just have to solve the equation:

2(3x - 5) + 2x = 78

6x - 10 + 2x = 78

8x - 10 = 78

8x = 88

x = 11

x = 11, but remember, x is the width, not the length. Since we already found what x is, we just have to plug it into the equation of:

3x - 5

3 × 11 - 5

33 - 5 = 28

Answer: Length = 28 (don't forget to add the unit if there is one)

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3 years ago
Which graph shows the solution to the inequality -x + 2 > 1
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To graph this, plot an open circle at 1 on the number line and shade to the left of this value. The open circle indicates that 1 is not part of the solution set.

If your teacher requires you to graph this on an xy grid, then draw a vertical line through 1 on the x axis. Make this vertical line a dashed line. Then shade the entire region to the left of this dashed line. Any point in this shaded region will have an x coordinate that is less than 1. The dashed line acts like the open circle. The dashed line tells the reader "any point on this dashed line is not part of the solution set"
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Max tosses a Fair coin 3 times what is the probability of getting heads in the first two trials and Tails in the last trial
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.5 * .5 *.5 = 1/8 
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the probability to have head is .5 so the probability of tails 1-.5 
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Let us break it down. A sum of ten. That is just 

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The slash means division here. Thus your final answer is 


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