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tamaranim1 [39]
2 years ago
9

a father was four times older than his son. ten years ago,if their present age is 423 find the age of father and son?​

Mathematics
1 answer:
Fofino [41]2 years ago
7 0

Answer:

hope this helps u llllllllllllll

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Sam watched television the past five nights for 42 minutes, 23 minutes, 56 minutes, 19 minutes, and 67 minutes. What was the med
guajiro [1.7K]

Answer:

42 minutes is the median amount of time

Step-by-step explanation:

The Median is the middle value of data set.

If there is "odd" number of numbers, and there are n numbers, the median is:

(n/2) + 1 th  number

If there is "even" number of numbers, and there are n numbers, the median is:

Average of n/2th and (n/2) + 1 th number

Here, we have 5 numbers, so the median would be:

(5/2) + 1 th number

That is

3rd number

But, we need to arrange the numbers from least to greatest. Lets write it:

19, 23, 42, 56, 67

The third number is 42, this is the median

3 0
2 years ago
Problema 3
Serjik [45]

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4 0
2 years ago
Show that the function of f(x) = a - x is its own inverse for all real numbers a
tatuchka [14]

f(x) = a - x

y = a - x

y + x = a - x + x

y + x = a

y + x - y = a - y

x = a - y

f-¹(x) = a - x

5 0
2 years ago
Sharon is planning a holiday for 4 people for 7 days.
sineoko [7]

Answer:

£ 3600

Step-by-step explanation:

Each PERSON cost:

Travel cost 130 (assume for whole 7 days since per day is not written)

Hotel 60 per day (so 7 days = 60 * 7 = 420)

Money Spend 350 (assume for whole 7 days since per day is not written)

-------------------------------------------------------------------------------------------------------------

Now, that sums to:

130 + 420 + 350 = £900 [each person for whole 7 days]

Now, there are 4 person, so total cost of whole group (4 persons):

900 * 4 = <u>£ 3600</u>

5 0
3 years ago
Which of the following are composite numbers check all that are true
-BARSIC- [3]

Answer:

33, 49, and 21.

Step-by-step explanation:

its 33, 49, and 21

hope this helps

4 0
2 years ago
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