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2 years ago

What is 12 more than 3 times a number?

Mathematics

2 answers:

Nadya [2.5K]2 years ago

6 0

Answer:

We can use 2 things to help solve this

First multiplication, What times 3 is 12?

Well we can use common factors to find out. But if we studied are facts we would know 3×4=12

Next division: What'd 3÷12? We can divide to figure this out. 3÷12=4

3÷12=4

3×4=12

sleet_krkn [62]2 years ago

4 0

Answer:

I think it's 4 times 3 is the more number for 12.

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Please need help on this one

kakasveta [241]

Answer:

25 degrees

Step-by-step explanation:

Use a trig. ratio

$sin^{-1}$ =3/7

Plug it into a calculator

$sin^{-1}$ =25.3

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3 years ago

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LuckyWell [14K]

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about the second one... well, is a "fait accompli" that using the pythagorean theorem, if x = 8 and y = 5, the hypotenuse must be √(8² + 5²) = √(89), which is neither of those choices.

5, 8, 13 are no dice, namely 5² + 8² ≠ 13

25, 64, 17 is are no dice too, because 25² + 17² ≠ 64²

however, 5,12 and 13 are indeed a pythagorean triple

also is 39, 80, 89.

when looking for a pythagorean triple, recall that c² = a² + b².

so the longest leg is the sum of the square of the small ones.

so what you'd do is, check the small legs, square them, add them up, if they're indeed a pythagorean triple, they "must" add up to the longest leg.

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3 years ago

If the coordinates of point A are (-3,2) and the coordinates of point B are (7,6) the x intercept of cd is

Rainbow [258]

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2 years ago

What is the ruler postulate

ch4aika [34]

Answer:

The points on a line can be assigned real number coordinates (think of numbers on a number line). The distance between any two points is their difference.

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2 years ago

Evaluate the given expression. 5 P 2

Mamont248 [21]

Answer:

Step-by-step explanation:

nPr = n!/(n-r)!

5P2 = 5!/(5-2)!

= 5!/3!

= 5×4×3!/3!

= 5×4

= 20

7 0

3 years ago