When studying the simultaneous responses to two categorical questions, we should develop a contingency table.
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Answer:
B complementary andjes
Step-by-step explanation:
their sum is 90° so they're complementary
Answer:
26 units.
Step-by-step explanation:
AB + BC + AC = AC + AD + DC + 4
AC is common so
AB + BC = AD + DC + 4
AB + BC - AD - DC = 4
Substituting the given values
AB + 7 - 5 - 6 = 4
AB = 4 - 7 + 5 + 6 = 8
So the perimeter of ABCD
= AB + BC + AD + CD
= 8 + 7 + 5 + 6
= 26.
Answer:
x = 2
Step-By-Step Explanation:
It is really easy to see that the angle on the left side is almost equal to 90° (Right Angle) but is a bit less.
35 × 1 + 3 = 38 F It is too less than 90°
35 × 2 + 3 = 73 T It is closer and less than 90°
35 × 3 + 3 = 108 F It is close but more than 90°
35 × 4 + 3 = 143 F It is too much more than 90°
So,
x = 2
Double Checking
(180° - (35° × 2 + 3)) + (2 + 39°) + (3 + 30°)
= (180° - 73°) + 41° + 32°
= 107° + 41° + 32°
= 180°
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Answer:
x=-3, y=5
Step-by-step explanation:
6x + 2y = -8 3x - 2y = -19
Add the two equations together to eliminate y
6x + 2y = -8
3x - 2y = -19
------------------------
9x = -27
Divide each side by 9
9x/9 = -27/9
x = -3
Now we find y
6x + 2y = -8
6(-3) +2y = -8
-18+2y = -8
Add 18 to each side
-18+18 +2y = -8+18
2y = 10
Divide by 2
2y/2 = 10/2
y =5