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tiny-mole [99]
3 years ago
6

Please answer the question from the attachment.

Mathematics
1 answer:
alekssr [168]3 years ago
5 0
The correct answer is 43.75
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I really need help with this question
Sergeu [11.5K]

Answer:

39

Step-by-step explanation:

I assume the father's age is a 2-digit number. He is not 9 years old or younger, and he is not 100 years old or older.

The sum of the digits of a two-digit number goes up by 1 from one number to the next unless the number ends in 9.

For example, from 17 to 18, the sum of the digits goes from 8 to 9.

If the number ends in 9, for example, 29, the digits add to 11. Then the next number is 30, and now the sum of the digits is 3, which is less than 11.

The father's age now is a number whose sum of digits is not only greater than the sum of the digits next year, but it is 3 times greater.

Let's look at 2-digit number and the next number and the sum of their digits.

19, 20; sums: 10, 2; 10/2 = 5, not 3

29, 30; sums: 11, 3; 11/3 ≠ 3

39, 40; sums: 12, 4; 12/4 = 3

Answer: The father is 39 years old.

5 0
2 years ago
Read 2 more answers
Can 13 be partitioned in groups of 3​
Gennadij [26K]

Answer:

no

Step-by-step explanation:

in less you want a un proportional number

7 0
3 years ago
Sheri's freezer is 2 feet wide, 6 feet long, and 2 feet deep. What's the volume of her freezer? 
vivado [14]
The answer is B. 24 cubic feet
6 0
2 years ago
Read 2 more answers
The cost, in dollars, of adding s ingredients is f(s) = 6.75 +0.50s. Which<br> statement is correct?
Ganezh [65]
Is there more to this question or no?
4 0
2 years ago
Christopher is analyzing a circle, y^2 + x^2 = 121, and a linear function g(x). Will they intersect?
Sav [38]
Circle: x^2+y^2=121=11^2 => circle with radius 11 and centred on origin.
g(x)=-2x+12   (from given table, find slope and y-intercept)
We can see from the graphics that g(x) will be almost tangent to the circle at (0,11), and that both intersection points will be at x>=11.
To show that this is the case, 
substitute g(x) into the circle
x^2+(-2x+12)^2=121
x^2+4x^2-2*2*12x+144-121=0
5x^2-48x+23=0
Solve using the quadratic formula,
x=(48 &pm; &radic; (48^2-4*5*23) )/10
=0.5058 or 9.0942
So both solutions are real and both have positive x-values.

7 0
3 years ago
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