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2 years ago

Please help me i really need it!

Mathematics

1 answer:

Gelneren [198K]2 years ago

8 0

Answer:

1.Median= 79

2.Q3-Q1 = 82-75

= 4

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What is the sum of the polynomials?(8x^2-9x^2-4x)+(x^2-3y^2-7x)

kogti [31]

Answer:

-11x-3y^2

Step-by-step explanation:

(8x^2-9x^2-4x)+(x^2-3y^2-7x)

-x^2-4x+x^2-3y^2-7x

-4x-7x-3y^2

-11x-3y^2

4 0

4 years ago

Read 2 more answers

Find the area of a regular decagon with a perimeter of 60 ft.

Naddik [55]

Answer:

Area of a regular decagon with a perimeter of 60 ft. = 277 squared ft

Step-by-step explanation:

Decagon has 10 sides So 60/10 = 6 (each side = 6ft )

The sum of the interior angles of a decagon is 1 440 degrees.

There are 10 equal isosceles triangles of base angles 72 degrees in a decagon

Each isosceles triangle can subdivided into 2 right-angled triangles with height h and base length = (6/2) = 3 cm and base angle 72 degrees.

Height of right-angled triangle h = 3 tan 72 ft.

Area of 1 right-angled triangle = (1/2)(3)(3 tan 72) = 13.85 squared ft

Area of decagon = 20 right-angled triangles = 277 squared ft

5 0

3 years ago

Help with these 4 questions

Vika [28.1K]

a. $S_1 = \{1,2,3,4,5,6\}$

b. $S_2=\{A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z\}$

c. $S_3 = \{HH, HT, TH, TT\}$

d. $S_4 =\{1T,2T,3T,4T,5T,6T,1H,2H,3H,4H,5H,6H\}$

Step-by-step explanation:

We will write the sample space of all options one by one.

a. Rolling a 6 sided die

As the die has six sides numbered from 1 to six then the sample space will be:

$S_1 = \{1,2,3,4,5,6\}$

b. Guessing the first initial of a student's name:

As the English language has 26 alphabets, the first initial can be any alphabet so the sample space will be all letters:

$S_2=\{A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z\}$

c. Tossing two coins

As two coins are tossed, the outcomes will be a combination of two outcomes

$S_3 = \{HH, HT, TH, TT\}$

d. Rolling a 6 sided die and tossing a coin

As the die is rolled and then a coin is tossed. The die's coin will either combine with heads or tails

So,

$S_4 =\{1T,2T,3T,4T,5T,6T,1H,2H,3H,4H,5H,6H\}$

Hence,

a. $S_1 = \{1,2,3,4,5,6\}$

b. $S_2=\{A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z\}$

c. $S_3 = \{HH, HT, TH, TT\}$

d. $S_4 =\{1T,2T,3T,4T,5T,6T,1H,2H,3H,4H,5H,6H\}$

Keywords: Sample Space, Probability

Learn more about sample space at:

#LearnwithBrainly

7 0

3 years ago

the following table shows the age of the patients admitted in a hospital during a year .Fine the median of the data given

krek1111 [17]

Answer:

hope you liked it!

Step-by-step explanation:

give a thanks if it is correct!

8 0

3 years ago

Calculate state income tax: Gross earnings are 655.12; tax rate is 4.5%. (round answer)

LiRa [457]

Answer:

145.6

Step-by-step explanation:

5 0

4 years ago