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Reptile [31]
2 years ago
8

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Mathematics
1 answer:
ivanzaharov [21]2 years ago
4 0
Consider
.. X = {1, 2, 3, 4}, x = 4
.. Y = {2, 3, 4, 5, 6}, y = 5, w = 3
The elements in X or Y (X ∪ Y) are {1, 2, 3, 4, 5, 6}, n = 6.
.. n = 6 = 4 + 5 - 3

Note that if we just add x and y, we count the common elements twice. In order to just count the common elements once, we need to subtract that count from the total of x and y.

selection B is appropriate.
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Find the measurement of both complementary angles, if:
aniked [119]

We are given one angle is 3 times less than other.

Let us assume one angle measure is x degrees and another is 4x.

Because x is 3x less than 4x.            ( We can check 4x-x= 3x)

Sum of complementary angles is 90 degrees.

So, we can setup an equation

First angle measure + first angle = 90 degrees.

x+4x = 90.

Adding x and 4x, we get 5x.

So, 5x = 90.

Dividing both sides by 5, we get

5x/5 = 90.

x= 18.

So, one angle is of 18 degrees.

Another angle = 4x = 4 times 18 = 72 degrees.

So, required angles are of 18 degree and 72 degree.



8 0
3 years ago
a survey was conducted with s students. 30% of those surveyed said that they have traveled out of the country. Of the students w
Ivenika [448]
40÷30s? I think that is the answer, but I'm not completely sure...
5 0
2 years ago
Can someone help me to saved time on homework and plz solve 1 through 6
Debora [2.8K]

#1 = 54 yards

Step-by-step explanation:

1 foot= 3 yards. If you multiply 18 × 3 the answer is 54.

5 0
3 years ago
Factor completely. x^3 - y^3
finlep [7]
(x-y)(x^2+xy+y^2)

The first parentheses contain the cubed root of both the terms so x and y respectively. second parentheses follows the formula (a^2 + ab + b^2)
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boyakko [2]

Answer:

I think the answer is 100%

6 0
2 years ago
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