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astraxan [27]
2 years ago
10

The difference between a number and 12 is 20 in a fraction

Mathematics
1 answer:
soldi70 [24.7K]2 years ago
8 0

Do you want us to simplify? If so, it would be 3/5


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Robert climbed 775 steps in 12 1/2 minutes. How many steps did he average per minute
Archy [21]
775 steps across 12.5 minutes = 775/12.5 = 62 steps per minute
6 0
3 years ago
Got another question for you guys! What is 12.5 x 4.2?
yarga [219]

Answer:

52.5

Step-by-step explanation:

3 0
2 years ago
If x1 and x2 are the roots of the equation x^2 +5x-3=0, determine the value of x1^2 + x2^2. I know that I have to use vietas for
Arturiano [62]

Answer:

31

Step-by-step explanation:

Given

x² + 5x - 3 = 0

with a = 1, b = 5, c= - 3 , then

sum of roots x₁ + x₂ = - \frac{b}{a} = - \frac{5}{1} = - 5

product of roots = \frac{c}{a} = \frac{-3}{1} = - 3

Now

(x₁ + x₂)² = x₁² + 2x₁x₂ + x₂² , that is

(- 5)² = x₁² + 2(- 3) + x₂²

25 = x₁² - 6 + x₂² ( add 6 to both sides ), then

x₁² + x₂² = 31

5 0
2 years ago
The times for three swimmers are 101.85 seconds, 101.6 seconds, and 59.625 seconds. Which is the winning time? how many seconds
bija089 [108]

Hello there! the winning time is 59.625 seconds.

This is the person who completed the lowest amount of time, meaning they finished first. The others too longer so they finished later, meaning they didn't win.

I hope this was helpful and have a great day! :)

3 0
3 years ago
Multiply 1.78 and 1.3
Radda [10]

Answer: 2.314 is your answer.


Step-by-step explanation:

Line up both numbers, then multiply each number from right to left. After, use the steps of multiplication to find your answer.

5 0
3 years ago
Read 2 more answers
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