How are perpendicular lines and interesting line alike? How are they different?

Answers

Answer 1

Answer: Perpendicular lines and intersecting lines are the same because they both describe 2 lines that cross one another...

They are different because perpendicular lines cross one another in a specific way. The intersection of perpendicular lines forms 90 degree angles, while intersecting lines just describes 2 lines crossing. It could be at any angle.

Answer 2

Answer: Perpendicular lines= two line segments are perpendicular if they meet at the right angle.
Intersecting lines= two line segments that cross at any angle.
the difference is perpendicular lines have to cross at a right angle. intersecting lines that cross at any angle
the similarity is because they both cross each other.

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There were 21 students in Travis's fourth-grade class at the end of the year. During the year four new students joined his class, and two moved away. One student was transferred to another fourth-grade teacher. How many students were there in the beginning of the year?

Answers

so there were 21 students from the start then 4 new people joined so 21 plus 4 equals 25 . 25 minus 2 equals 23 23 minus 1 equals 22

You start with 21 then add 2 as 2 moved away 21+2=23 1 student was transferred add that on 23+1=24 At the begging of the year there were 24 students.

The graph below shows the relationship between the number of chores that Larissa completes and the amount of money that she earns. Which is the best prediction of the number of chores completed if she earns $5?
1
2
10
12

Answers

Answer:

Option B.

Step-by-step explanation:

The given graph represents the relationship between the number of chores, x that Larissa completes and the amount of money that she earns, y.

From the given graph it is clear that the equation of best fit line is

$y=2.09x+0.93$

We need to find the expected number of chores completed if she earns $5.

Substitute y=5 in the above equation and find the value of x.

$5=2.09x+0.93$

Subtract 0.93 from both sides.

$5-0.93=2.09x+0.93-0.93$

$4.07=2.09x$

Divide both sides by 2.09.

$(4.07)/(2.09)=x$

$1.947368421=x$

$x\approx 2$

Therefore, the correct option is B.

Answer:

Step-by-step explanation:

What is the explaining 8688 divided by 8.2 = what

Answers

You just show your work for dividing 8688/8.2 which comes out to be 1059.5121

3/4 of a number is 24. What's the number?

Answers

Hi

3x/4 = 24
3x = 24·(4)
3x = 96
x = 96/3
x = 32

3/4 of 32 is 24

Plzzzzz help............Twelve decreased by twice a number is the same as 8 times the sum of the number plus 4. What is the number?Is the equation 2x-12=8(x+4)

Answers

Okay, the equation would be 12 - 2x = 8(x + 4), you got close!

what i would do first is distribute to get rid of those evil parenthesis and make this all simple ^-^

So, we take 8 times x, and 8 times 4.

Our equation, is now 12 - 2x = 8x + 32

Now, what i would do, is simplify it. Get x to one side, and a whole number to the other. Well, for me it would be easier to keep the larger number on the right, and x on the left!

So we have to be fair, and keep it equal! So, i would start with.... subtracting 32. Since its a positive 32, to cancel it out we have to subtract 32, to get to zero! so, by subtracting 32 on both sides ( 12 - 32 and 32 - 32) we end up with -20 - 2x = 8x

Now looking at - 20 - 2x = 8x, i can see what i need to do. i need to get x to one side, and whole numbers to the other. There are no whole numbers on the right, just variables and coefficients, so i have to get that x away from the left!

So, im going to add 2x on both sides, to eliminate it! So we add 2x on the left to cancel it out, and add 2 x on the right to balance it out! We are now left with -20 = 10x

Now what we do is we get rid of that tag along right by the x! Yep, that little 10 there! He has to go!

How to we get rid of him? Well, he is being multiplied by the x! So, we have to do the opposite and divide to get him alone. So, we divide by 10 on both sides, and we are left with -2 = x!

Now, time to check your answer! Basically, you replace x with -2 in the equation! Here we go:

12 - 2(-2) = 8(-2 + 4)

First we should start with multiplying! when we multiply the -2 in the equation, we get 12 + 4 = 8(2), and we can finish that off by simplifying it to 12 + 4 = 16

when we simplify it and add 12 + 4, we get 16. So we are left with 16 = 16.

This equation is true, so we are right! -2 DOES equal x!

Tom and jasper have the same percentage of blue marbles in their bags of marbles. Tom had five blue marbles and 20 total marbles. jasper has 12 blue marbles. how many of jasper marbles are not blue?

Answers

First find the persentage of blue marbles
5/20 = 0.25
0.25 = 25%

Next find the persentage for the other marbles
100% - 25% = 75%

Now take 75% of Jasper's 12 marbles
12*0.75 = 9 marbles are not blue

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