Answer:
5
Step-by-step explanation:
We can figure out the length of AB by using the distance formula.

So the distance is 5
Question 14, Part (i)
Focus on quadrilateral ABCD. The interior angles add to 360 (this is true for any quadrilateral), so,
A+B+C+D = 360
A+90+C+90 = 360
A+C+180 = 360
A+C = 360-180
A+C = 180
Since angles A and C add to 180, this shows they are supplementary. This is the same as saying angles 2 and 3 are supplementary.
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Question 14, Part (ii)
Let
x = measure of angle 1
y = measure of angle 2
z = measure of angle 3
Back in part (i) above, we showed that y + z = 180
Note that angles 1 and 2 are adjacent to form a straight line, so we can say
x+y = 180
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We have the two equations x+y = 180 and y+z = 180 to form this system of equations

Which is really the same as this system

The 0s help align the y terms up. Subtracting straight down leads to the equation x-z = 0 and we can solve to get x = z. Therefore showing that angle 1 and angle 3 are congruent. We could also use the substitution rule to end up with x = z as well.
Answer:
<u>k-4</u><u>=</u><u>9</u>
<u>k</u><u>=</u><u>9</u><u>+</u><u>4</u>
<u>k</u><u>=</u><u>1</u><u>3</u><u> </u>
<u>¥</u><u>¥</u><u>¥</u><u>¥</u><u>¥</u><u>¥</u>
500 because it is in the hundredths place
Answer:
I'll explain you number one
3
Step-by-step explanation:
You first subtract the single number (1) subtract to 10 which gives you 9, then you will divide 3 from 9 which gives you 3
Sorry I couldn't help you with there other ones.