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3 years ago

A number n decreased by 18 is 3

Mathematics

2 answers:

aleksandrvk [35]3 years ago

6 0

Answer:

-36

Step-by-step explanation:

Nuetrik [128]3 years ago

4 0

Answer:

Step-by-step explanation:

A number n decreased by 18 is 3

This can be though of as:

N subtracted by 18 equals 3

And put into a solvable form:

N-18=3

Now lets solve for N:

N-18=3

+18 +18

N=21

So this is your answer!

Hope this helps!

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if we're going with single topping, single cheese per pizza, the answer is 30.

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3 years ago

88=66+7-5x89 this question makes no scence

andrew-mc [135]

Answer:

x = -3/89

Step-by-step explanation:

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3 years ago

Yara multiplies and divides a certain number by the same

Butoxors [25]

For this case we have to:

x: Represents the unknown number

y: Represents the exponent of base 10

So, considering a system of equations we have:

$x * 10 ^ y = 40,000\\\frac {x} {10 ^ y} = 0.000004$

From the first equation we have:

$10 ^ y = \frac {40,000} {x}$

Substituting in the second equation:

$\frac {x} {\frac {40,000} {x}} = 0.000004\\\frac {x ^ 2} {40,000} = 0.000004\\x ^ 2 = 40,000 * 0.000004\\x ^ 2 = 0.16\\x = \pm \sqrt {0.16}$

We choose the positive value:

$x = 0.4$

So, the number is 0.4.

So:

$10 ^ y = \frac {40,000} {0.4}\\10 ^ y = 100,000\\y = 5$

Thus, the exponent is 5.

Answer:

Yara use 0.4 and $10 ^ 5$

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3 years ago

I need help. Please

zubka84 [21]

Answer:

Answer is A.

Step-by-step explanation:

If you take the current cords of 'C' and add the cords it gives you: (4.5,-6.5). You end out with (3.5,-9,2). Hope this helps!

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3 years ago

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Pls answer question :)

inysia [295]

okay im not sure but maybe try to find a number that can be = to 18 and that might be y

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3 years ago

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