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Minchanka [31]
3 years ago
14

Work out the size of angle B

Mathematics
2 answers:
eduard3 years ago
7 0

Answer:

61

Step-by-step explanation:

and let c looks to be a right angle

kupik [55]3 years ago
4 0

Answer:

61° hope this helps

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The high-school football team scored 19 points on touchdowns (worth 7 points if you count the extra point) and field goals (wort
Kazeer [188]
If they scored 5 times, they got 1 touchdown and 4 field goals.

Equation:

7 + 3 + 3 + 3 + 3 = 19.


5 0
2 years ago
53​% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the
faltersainse [42]

Answer:

a

   P(X = 5) = 0.2423

b

    P( X \ge  6 )=  0.4516

c

   P( X <  4 )=  0.12694

Step-by-step explanation:

From the question we are told that

   The population proportion is   p = 0.53

    The sample size is  n = 10

Generally the distribution of the confidence of US adults in newspapers follows a binomial distribution  

i.e  

         X  \~ \ \ \  B(n , p)

and the probability distribution function for binomial  distribution is  

      P(X = x) =  ^{n}C_x *  p^x *  (1- p)^{n-x}

Here C stands for combination hence we are going to be making use of the combination function in our calculators        

Generally the probability that the number of U.S. adults who have very little confidence in newspapers is exactly​ five is mathematically represented as

     P(X = 5) =  ^{10}C_5 *  0.53^5 *  (1- 0.53)^{10-5}

=>  P(X = 5) =  252 * 0.04182 *  0.023

=>  P(X = 5) = 0.2423

Generally the probability that the number of U.S. adults who have very little confidence in newspapers is  at least​ six is mathematically represented as

  P( X \ge  6 )=  P( X  = 6) +  P( X  = 7) +  P( X  = 8) +  P( X  = 9) +  P( X  = 10)

=> P( X \ge  6 )=  [^{10}C_6 *  [0.53]^6 *  (1- 0.53)^{10-6}] +  [^{10}C_7 *  [0.53]^7 *  (1- 0.53)^{10-7}] +  [^{10}C_8 *  [0.53]^8 *  (1- 0.53)^{10-8}] +  [^{10}C_9 *  [0.53]^9 *  (1- 0.53)^{10-9}] + [^{10}C_{10} *  [0.53]^{10} *  (1- 0.53)^{10-10}]

=> P( X \ge  6 )=  [0.227] +  [0.1464] +  [0.0619] +  [0.0155] + [0.00082]

=> P( X \ge  6 )=  0.4516

Generally the probability that the number of U.S. adults who have very little confidence in newspapers is  less than four is mathematically represented as

    P( X <  4 )=  P( X  = 3) +  P( X  = 2) +  P( X  = 1) +  P( X  = 0)

=>  P( X <  4 )=  [^{10}C_3 *  0.53^3 *  (1- 0.53)^{10-3}] +  [^{10}C_2 *  0.53^2 *  (1- 0.53)^{10-2}] +  [^{10}C_1 *  0.53^1 *  (1- 0.53)^{10-1}] +  [^{10}C_0 *  0.53^0 *  (1- 0.53)^{10-0}]

=>  P( X <  4 )=  0.09051  +  0.03 +  0.0059 +  0.000526

=>  P( X <  4 )=  0.12694

5 0
2 years ago
Joseph chooses a book at random, looks at it,
Romashka [77]

Answer:

1/2

Step-by-step explanation:

if he only picked 2 books about cooking and animals that will be the denominator and 1 will be the numerator because he pick 1 of those books of the 2

3 0
3 years ago
Read 2 more answers
Help! This question is extremely confusing! WILL GIVE A LOT OF POINT!
steposvetlana [31]

Answer:

<u>1035 feet</u>

Step-by-step explanation:

Taking the tan ratio of the angle of elevation :

  • tan 49° = h/900
  • 1.15 = h/900
  • h = 1.15 × 900
  • h = <u>1035 feet</u>
6 0
1 year ago
Read 2 more answers
Evaluate.
Aleksandr-060686 [28]

Answer:

-58

Step-by-step explanation:

-|123+(-1)|/2-(-3)

-|122|/2-(-3)

-122/2-(-3)

-61-(-3)

-58

5 0
3 years ago
Read 2 more answers
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