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How do you solve this problem the sum of the digits is 8 the product of the digits is 12 the number is between 30 and 90?
Wiki User
∙ 13y ago
To solve this, set up a system of equations.
Let a be the first digit and b the second.
Equation 1: a + b = 8
Equation 2: ab = 12
Solve for a variable: b = 12/a
Substitute that variable into the other equation: a + 12/a = 8
Solve for the 1st variable: a2 + 12 = 8a; a2 - 8a + 12 = 0, a = 6, 2
Solve for the 2nd variable: b = 12/a = 12/6 = 2
The number is 62.
(The 2 was crossed out for a because the number has to be between 30 and 90.)
Wiki User
∙ 13y ago
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What two-digit number between 10 and 30 is divisible by both the sum of its digits and the product of its digits?
12 and 2412 and 2412 and 2412 and 24
Which solution contains the correct number of significant digits for the product 2.80 mm 0.1 mm.?
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
How do you convert 8.08 x 5.232 into the correct of significant figures?
When multiplying, the product is going to have the same number of significant digits as the least amount in the factors. So 8.08 has three significant digits and 5.232 has four significant digits. Remember that any zeros in-between significant digits is always significant. Because the least amount of sig digs in the factors is three (from 8.08), the product is going to have three sig digs.Multiplying out normally: 8.08 × 5.232 = 42.27456Rounded to three places: 42.3
What number has 24 as the product of its digits and the sum of its digits is a prime number?
There are two numbers that satisfy the criteria. 38 and 83
When you multiply a 3 digit number by a 2 digit number what is the greatest number of digits the product can have?
It can have up to 5 digits.
What even number has digits whose product is ten?
52 is a number whose digits have a product of 10.
If the sum of two digits is 8 and the product is 12 and the number is between 30 and 90?
2 and 6
The sum of your digits is 16 The product of your digits is 64 What number are you?
88
Between 70 and 80 the product of its digits is 21?
Try the different numbers - there are only 11 after all - and multiply their digits. Or analyze the factors of the number 21.
What two-digit number between 10 and 30 is divisible by both the sum of its digits and the product of its digits?
12 and 2412 and 2412 and 2412 and 24
Which solution contains the correct number of significant digits for the product 2.80 mm 0.1 mm.?
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
How do you convert 8.08 x 5.232 into the correct of significant figures?
When multiplying, the product is going to have the same number of significant digits as the least amount in the factors. So 8.08 has three significant digits and 5.232 has four significant digits. Remember that any zeros in-between significant digits is always significant. Because the least amount of sig digs in the factors is three (from 8.08), the product is going to have three sig digs.Multiplying out normally: 8.08 × 5.232 = 42.27456Rounded to three places: 42.3
A 2 digit number with 2 different digits has a special property When the sum of the digits added to the product of it's digits the result is the number itself What is the smallest number with?
19
What number has 24 as the product of its digits and the sum of its digits is a prime number?
There are two numbers that satisfy the criteria. 38 and 83
When you multiply a 3 digit number by a 2 digit number what is the greatest number of digits the product can have?
It can have up to 5 digits.
What is a square number a 2 digit number and the product of its digits is 8?
81
What is 310 times 20 in significant digits?
When using significant digits, the product has only the number of significant digits as the lowest number in the factors. "20" has two significant digits and "310" has three. Therefore, the product has to have two significant digits. 310 × 20 = 6200 6200 already has two significant digits.
