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goldfiish [28.3K]
1 year ago
13

Another quick geometry question! Thanks!

Mathematics
1 answer:
miss Akunina [59]1 year ago
5 0
Cross multiply.
14/12=x/18
14 x 18 = 252
252/12= 21
so x=21
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In a class of 47 students, the number of males is 7 less than twice the number of females. How many females and how many males a
Rom4ik [11]
X=number of females
47-x=number of males
# of males is 2*(number of females)-7:
47-x= 2x-7
add x to both sides:
47=3x-7
add 7 to both sides:
54=3x
divide both sides by 3:
x= 18 females
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6 0
2 years ago
Events A and B have probabilities such that P(A) = 0.3, P(B) = 0.25, P(M ∪ N) = 0.425, and P(M ∩ N) = 0.075. Are events A and ev
nekit [7.7K]

Answer:

(C)Yes, because P(M) ∙ P(N) = P(M ∩ N)

Step-by-step explanation:

Two events A and B are independent if P(A)P(B)=P(A ∩ B)

Given events A and B such that:

P(A) = 0.3, P(B) = 0.25, P(A ∪ B) = 0.425, and P(A ∩ B) = 0.075

  • P(A)P(B)=0.3 X 0.25 =0.075
  • P(A ∩ B) = 0.075

Since the two expression above gives the same answer, they are independent.

<u>The correct option is C.</u>

7 0
3 years ago
5
worty [1.4K]

Answer: to find the mean add up all the scores and then divide it by the number of scores that are there and to find the mode order the numbers lowest to highest and see which number appears the most

5 0
2 years ago
Ratios equivalent to 1/2
Blizzard [7]
The answer is 1:2. all you have to do is add the dots for example 4/5 would be 4:5
7 0
2 years ago
Sixteen less than ten times a number is the same as twice the number. find the number
tatuchka [14]
X = unknown number
10x - 16 = 2x
Subtract 10x from both sides to isolate the variable on the right side of the equation.
-16 = -8x
Divide both sides by -8 to get x alone.
2 = x
8 0
3 years ago
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