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3 years ago

(7g - 6) - (-3n – 4) =

Mathematics

1 answer:

goldenfox [79]3 years ago

8 0

Answer:

7g + 3n - 2

Step-by-step explanation:

when you subtract you 'add the opposite'; subtracting a negative is the same as adding a positive

for example, using the above statement we can rewrite the problem as:

7g - 6 + 3n + 4

we can combine -6 and 4 to get -2

7g + 3n - 2 or 7g + 3n + (-2)

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3 years ago

Permutation:

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Formula for permutation is:

$\boxed{ \tt^{n} C_{r} = \frac{n!}{r!(n - r)!} }$

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3 years ago

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A large container holds 14 litres of a solution which is 25% antifreeze, the remainder being water. How many litres of antifreez

frutty [35]

Answer:

2.8 liters

Step-by-step explanation:

So there are various ways to do this problem, this is just MY preferred way.

Since we are given 1/4th of a total value with 14 liters, we can actually make this 4/4 by multiplying our given value by 4. In this case, 14 liters for 25% becomes 56 liters for 100% antifreeze.

Since we know have a percent of 100%, we can proceed to take 10% increments, all the way up to 30%

10% is 5.6, multiplied by 3 is 16.8

While you might want to put 16.8 instantly, don't forget we are looking for how much is ADDED from 25%, not just how much there is.

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2 years ago

Without plotting the point (2, 0), tell in which quadrant or on

nekit [7.7K]

Answer:

A. x-axis and C. Quadrant 1

Step-by-step explanation:

(2,0) 2 is the x and 0 is the y. so if there is no y to go up then it's on the x-axis.

It's in Quadrant 1 cause it has no negatives.

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4 years ago

(7g - 6) - (-3n – 4) =​

(7g - 6) - (-3n – 4) =