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docker41 [41]
3 years ago
7

[Probability / Statistics) Twenty families were surveyed. How many have boys only? ​

Mathematics
2 answers:
Snowcat [4.5K]3 years ago
8 0

Answer:

5

Step-by-step explanation:

We start by seeing how many families we have in total, which is 20. We then must subtract the number of families with girls only, the number of families with both boys and girls, and the number of families with no children. 20 - 7 is 13, then 13 - 8 is 5, and 5 - 0 is 5.

snow_lady [41]3 years ago
5 0
5



Explain; I did this already lol
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Plz just give the eqution.
Nina [5.8K]

Answer:

16 = <u>3x</u>

Step-by-step explanation:

It is an equilateral triangle. The formula for the perimeter of an equilateral triangle is P = 3a.

3 0
2 years ago
Show how the following sequences is an arithmetic or not <br>please help me ​
serious [3.7K]

Answer:

not arithmetic

Step-by-step explanation:

An arithmetic sequence has a common difference d between consecutive terms.

Given

T_{n} = 2n² - 1

Substitute in n = 1, 2, 3, 4 to generate the first 4 terms of the sequence

T_{1} = 2(1)² - 1 = 2 - 1 = 1

T_{2} = 2(2)² - 1 = 8 - 1 = 7

T_{3} = 2(3)² - 1 = 18 - 1 = 17

T_{4} = 2(4)² - 1 = 32 - 1 = 31

check the difference between consecutive terms

7 - 1 = 6

17 - 7 = 10

31 - 17 = 14

The differences are not common hence not an arithmetic sequence

5 0
3 years ago
1. The price of the video game was $60.00. Thelprice was reduced by 25%. What was the sale price of the video game? A $15.00 B.
geniusboy [140]

Answer:

The answer is A. $15.00

Step-by-step explanation:

Take 25% of 60 and that is 15. Please give me brainliest

5 0
2 years ago
Read 2 more answers
Which number is larger, 9.1 or √81 ? Explain
Katen [24]
Answer: 9.1

Sqrt(81)=9

So 9.1 is larger!
Thanks!
5 0
3 years ago
Read 2 more answers
Can you guys please help me out on this one? I already tried but I just get confused. sorry for the bad camera quality. Please a
Tom [10]
Make a game out of it. it says that softball dimond is 50% bigger than a basball feild. also with the balls. transfer the feet to cm and go from there. i think you need to transfer the percentage into cm as well to get the answer.
5 0
3 years ago
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