The opposite angles in a cyclic quadrilateral are supplementary.
That's relatively easy to understand. Consider one of the diagonal chords. The central angle to that chord is the twice the measure of one quadrilateral angle and 360 minus the central angle is twice the measure of the opposite quadrilateral angle. So the two add to 180.
In our problem P=y is opposite R=w
w + y = 180 degrees
Last choice
Pretty sure it is b
i know for sure it isnt C or D
Answer:
A
Step-by-step explanation:
Equation
300 ( 1 + x) = 420
Explanation
You start with 300. What fractional amount do you need to increase the original amount up to 420
Solution
Divide both sides by 300
300(1 + x)/300 = 420/300
1 + x = 1.4
Subtract 1 from both sides.
1 - 1 + x = 1.4 - 1
x = 0.4
But as a percent this number is 0.4 * 100 = 40%
Answer
40% which is A
Answer:
0.1513
Step-by-step explanation:
mean= 15.4
SD=4.5
P(20<X<28)
P((20-15.4)/4.5 < Z < (28-15.4)/4.5)
P(1.022 < Z< 2.8 )
From Z distribution table,
P(Z<2.8)= 0.99744
P(Z<1.022)= 0.84614
P(1.022 < Z< 2.8 )= P(Z<2.8)- P(Z<1.022)
= 0.99744-0.84614
= 0.1513
The answer might be this so try 12614523/10000