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g100num [7]
2 years ago
6

Let XXX and YYY be the following sets: X = \{9, 25\}X={9,25}X, equals, left brace, 9, comma, 25, right brace Y = \{1, 4, 9,16,25

\}Y={1,4,9,16,25}Y, equals, left brace, 1, comma, 4, comma, 9, comma, 16, comma, 25, right brace Which of the following is the set X \setminus YX∖YX, \setminus, Y? Choose 1 answer: Choose 1 answer:
Mathematics
2 answers:
Romashka [77]2 years ago
8 0

Answer:

% hfhydu

Step-by-step explanation:

idejs9xh

jdh89oeuwkjd

rjdwid\fjiefh

Dmitry_Shevchenko [17]2 years ago
5 0

Answer:

The answer is "\bold{ \{\phi\}}"

Step-by-step explanation:

Given value:

\ Set\ X  = \{9, 25\} \\\\\ Set \ Y = \{ 1,4,9,16,25 \}\\\\Find: \\\\Set (X- Y) \\\\

When we subtract set X - Y it means, that it will give only, that value which is not available on the set Y.

\{X-Y\} = \{\phi\}

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5.
andrew-mc [135]

Answer:

The  angle of depression from Platform A to Platform B is 43.1^{\circ}

Step-by-step explanation:

Refer the attached figure

The horizontal distance between the  platforms is 500 feet i.e. BC = 500

The length of the zip-line is 685 feet i.e. AB = 685

We are supposed to find the  angle of depression from Platform A to Platform B

Hypotenuse = 685

Base = 500

Cos \theta = \frac{Base}{Hypotenuse}\\Cos \theta = \frac{500}{685}\\\theta = cos^{-1}(\frac{500}{685})\\\theta = 43.11^{\circ}

Hence  the  angle of depression from Platform A to Platform B is 43.1^{\circ}

4 0
2 years ago
A rectangle has a length of (3.2a + 0.18b)centimeters.The width is half the length. Sasha writes the expression (12.8a + 0.72b)
jeka94
The width is half the length, so is
  width = (1/2)*length
  width = (1/2)*(<span>3.2a + 0.18b) cm
  width = (1.6a +0.09b) cm

The perimeter of the rectangle is twice the sum of length and width.
  perimeter = 2*(length + width)
  perimeter = 2*((3.2a +0.18b) cm + (1.6a +0.09b) cm)
  perimeter = 2*(4.8a +0.27b) cm)
  perimeter = (9.6a +0.54b) cm

Sasha did not get this answer, so apparently ...
  her reasoning was not correct.</span>
8 0
2 years ago
Forty five children attend a preschool. The number of two year olds is one half of the number of three year old's. The number of
Maurinko [17]

To put this into an equation, we can make x the amount of two year old's there are.

x+2x+2x=45

5x=45

x=9

9 two year old's, 18 three year old's, and 18 four year old's.

5 0
2 years ago
Chuck has a gross pay of $815.70. By how much will Chuck’s gross pay be reduced if he has the following items withheld?
Alex787 [66]

Answer:

273.38

Step-by-step explanation:

815.70 * 6.2% = 50.57

815.70 * 1.45% = 11.83

815.70 * 19% = 154.95

Add those 3 totals to the additional $56 in federal tax

56+50.57+11.83+154.95 = 273.35

5 0
2 years ago
Read 2 more answers
In a certain classroom ,12.5% of the students own at least one pet. If there are 32 students in the classroom,how many students
Y_Kistochka [10]

Answer:

28

Step-by-step explanation:

Given that 12.5% of students own at least 1 pet, then the percentage of students who do not own a pet is

100% - 12.5% = 87.5%

Calculate 87.5% of 32, that is

\frac{87.5}{100} × 32

= 0.875 × 32 = 28 ← number of students who do not own a pet

8 0
2 years ago
Read 2 more answers
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