negative x negative = positive
negative x positive = negative
positive x positive = positive
so answers are
1 = positive
2 = positive
3 = negative
4 = negative
5 = positive
Answer:
B, 5/4s
Step-by-step explanation:
If something increases by 1/4, it means that it is the original number + 1/4 of it.
Ex: x + 1/4x = 5/4x
So if we substitute s for x, the answer must be 5/4s, or B
Answer:
- complement: 32.8°
- supplement: 122.8°
Step-by-step explanation:
The sum of an angle A and its complement C is 90°:
A + C = 90°
C = 90° -A . . . . . subtract A from both sides.
That is, the complement of an angle is found by subtracting the angle from 90°.
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The sum of an angle and its supplement is 180°. This means the supplement of an angle is found by subtracting the angle from 180°. You may notice the supplement is 90° more than the complement.
A + S = 180°
S = 180° -A = 90° +(90° -A)
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For the given angle, the complement is ...
C = 90° -57.2° = 32.8°
And the supplement is ...
S = 180° -57.2° = 122.8°
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<em>Additional comment</em>
We generally like angle measures to be positive (as with all measures in geometry). Hence, we might say that the complement of an angle greater than 90° does not exist. YMMV
Try to see what's going on with the splits of probability.
First flip:
Probability going to heads is
Probability going to tails is
Second flip:
Probability of landing heads twice is
Probability of landing heads and then tails is
Probability of landing tails then heads is
Probability of landing tails twice is
U=π(r+h)
r+h=U/π
r=U/π - h
Data:
U=16 1/2=16 + 1/2=(16*2+1)/2=33/2
h=2
π=22/7
Then:
r=U/π - h
r=(33/2)/(22/7) - 2
r=(33*7)/(2*22) - 2
r=231 /44 - 2
r=(231-2*44)/ 44
r=(231-88)/44
r=143/44 = (3*44 + 11)/44=3 11/44
Answer: r=143/44 or 3 11/44