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liberstina [14]
2 years ago
9

Help please!! I’m stuck with these questions. :)

Mathematics
1 answer:
ladessa [460]2 years ago
8 0

Answer:

20 elements.

Step-by-step explanation:

Lets say

n(U) = 114

n(A) = 57

n(B) = 79

n(A n B)= 42

Now,

n(A U B) = n(A) + n(B) - n(A n B)

= 57 + 79 - 42

= 94

Now,

n(A U B) compliment = n(U) - n(A U B)

= 114 - 94

= 20

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nevsk [136]

Answer:

75% .

Step-by-step explanation:

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3 years ago
Find the distance between each pair of points. (-5, -3) and (-5, -6)
Aloiza [94]

Answer:

• Formular for length:

length =  \sqrt{ {(x _{1}  - x  _{2}) }^{2}  +  {(y_{1} - y_{2})}^{2} }

• from points given, x1 is -5, x2 is -5, y1 is -3 and y2 is -6:

• substitute:

length =  \sqrt{ { \{ - 5 - ( - 5) \}}^{2}  +  { \{ - 3 - ( - 6) \}}^{2} }  \\  \\ length =  \sqrt{ {0}^{2} +  {3}^{2}  }  \\  \\ length =  \sqrt{ {3}^{2} }  \\  \\ { \boxed{ \boxed{ \:  \: length = 3 \: units \:  \: }}}

3 0
3 years ago
What is the ratio of 1/5 to 5/15 ?help​
timama [110]
1/5:1/3? I’m not sure..
3 0
3 years ago
Read 2 more answers
Will reward brainleist
harina [27]
V= 1/3* 3.141 *2^2 * (3*3 -2)
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5 0
3 years ago
Read 2 more answers
The graphs below have the same. what is the equation of the red graph?
11Alexandr11 [23.1K]

Answer:

g(x) = 3 - x² or -x² + 3

Step-by-step explanation:

the graph of f(x) = 4 - x² or -x² + 4

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3 years ago
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