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Dmitry_Shevchenko [17]
3 years ago
11

How do you know if two lines are parallel given coordinates only? How do you know if two lines are perpendicular given coordinat

es only? Give a real world example of parallel and perpendicular lines and explain why it is so important for them to be parallel or perpendicular.
Mathematics
1 answer:
Kryger [21]3 years ago
5 0

Parallel lines have the same gradient, so use the given coordinates to find the gradients of the lines.

Perpendicular lines have gradients that multiply to give -1. So use the given coordinates to find the gradient, and multiply them.

Perpendicular lines can be found on the globe, where longitudinal and latitude lines intersect. It's important for them to be perpendicular as they are used to measure time and location through geographical coordinates, and since Earth is essentially a sphere with 360 degrees, the lines have to be perpendicular for measurement.

(I could be wrong!!! I found some answers online and implemented them here.)

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Ricardo spends 2 2/3 hours practicing soccer on
ladessa [460]

Answer:

10 7/12 hours

Step-by-step explanation:

so we have to multiply 2 2/3 twice since he does that many hours for 2 days. We then have to multiply 1 3/4 three times since he does that many hours for 3 days. Lets first convert 2 2/3 into a mixed fraction. 2 2/3 = 3 times 2 =6 +2=8 over 3. 1 3/4=4 times 1=4+3=7 over 4. 8/3 times 2 equals 16/3 which eqials

5 1/3 hours. 7/4 times 3 equals to 21/4 which equals to 5 1/4. Lets now add

5 1/3 and 5 1/4. 5+5=10 but the fractions are not the same. Therefore, we need to make it to a common denominator. 4 times 3 equals to 12 so 4/12 plus 3/12 equals 7/12. Final answer equals to 10 7/12.

3 0
3 years ago
Which is the graph of the linear equation y = –one-fourthx + 3?
Aleksandr-060686 [28]

Step-by-step explanation:

need the graph

but, it will cross y axis at 3 and line will be going down

7 0
3 years ago
daniel's basketball team won 23 games and lost 8 games. Write the ratio of wins to losses in simplest form.
Soloha48 [4]
23:8 is the simplest form. However, you can put 5.75:2 or even 2.86/1 if you are looking for the absolute simplest
3 0
3 years ago
I decide to bake some cakes.I need 150g of flour for 12 cakes.How much flour do I need for 30 cakes?
blagie [28]
150 / 12 = 11.6666666667
11.6666666667 x 30 = approximately 350g of flour for 30 cakes
7 0
3 years ago
The area of a square mat is 125 square inches. The best approximation of its length is inches. If the length of each side is inc
gtnhenbr [62]
The area of a square is simply the side length squared and we are given that the area is 125 so:

s^2=125

s=√125

s=5√5

Now using the area equation again, and adding 1 inch to s we have:

A=(s+1)^2, and using s found above we have:

A=(5√5+1)^2

A=125+10√5+1

A=126+10√5 in^2

A≈148.36 in^2  (to nearest hundredth of a square inch)
4 0
3 years ago
Read 2 more answers
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