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Norma-Jean [14]
3 years ago
15

Someone please help me with this

Mathematics
2 answers:
Verizon [17]3 years ago
6 0
X would be 48 degrees
Sati [7]3 years ago
3 0

Answer:

x = 48

Step-by-step explanation:

a straight line is 180 so 180 - 29 = 51

a triangles angles also add up to 180 so, 51 + 81 = 132 180 - 132 = 48

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Which situation can be modeled by the equation 45−2.50x=11.50?
zavuch27 [327]

Answer:

I think either A or D. not sure tho. sry!

4 0
2 years ago
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Find x (geometry) plz help
Ilya [14]

Step-by-step explanation:

\frac{ \sin(x) }{12}  =  \frac{ \sin(75) }{22}  \\  \sin(x)  =  \frac{12 \sin(75) }{22}   \\  \sin(x)  = 0.5268 \\ x = 31.79 = 31.8

6 0
3 years ago
A bicycle lock has a four-digit code. The possible digits, 0 through 9, cannot be repeated. What is the probability that the loc
kozerog [31]
First let's find the number of the elements in the sample space, that is the total number of codes that can be produced.

The first digit is any of {0, 1, 2...,9}, that is 10 possibilities
the second digit is any of the remaining 9, after having picked one. 
and so on...

so in total there are 10*9*8*7 = 5040 codes.

a. What is the probability that the lock code will begin with 5?

Lets fix the first number as 5. Then there are 9 possibilities for the second digit, 8 for the third on and 7 for the last digit.

Thus, there are 1*9*8*7=504 codes which start with 5.

so 

P(first digit is five)=\frac{n(first -digit- is- 5)}{n(all-codes)}= \frac{1*9*8*7 }{10*9*8*7 }= \frac{1}{10}=0.1

b. <span>What is the probability that the lock code will not contain the number 0? 

from the set {0, 1, 2...., } we exclude 0, and we are left with {1, 2, ...9}

from which we can form in total 9*8*7*6 codes which do not contain 0.

P(codes without 0)=n(codes without 0)/n(all codes)=(9*8*7*6)/(10*9*8*7)=6/10=0.6

Answer:

0.1 ; 0.6</span>
4 0
3 years ago
Read 2 more answers
Help!!!!!!!!!!!!!!!!!!!!!!! Pleaseeeeee
klasskru [66]

Answer:

C) 43.96

Step-by-step explanation:

1. Use the formula to find the circumference of a circle whic is C= πR

2. First multiply the radius (7 in) by 2

3. 7 x 2 = 14

4. Then multiply 14 by 3.14

5. 14 x 3.14 = 43.96

5. There's your answer :)

Hope this helps :)

8 0
2 years ago
What is the radius of the circle who’s equation is x^2 + y^2 = 9
Svetllana [295]

Answer:

r=3

Step-by-step explanation:

  • The equation of a circumference is (x-a)^2+(y-b)^2=r^2.
  • Then , in this case r^2=9, and then to know the value of r we just simply have to calculate the square root of 9, which is 3.
8 0
4 years ago
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