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2 years ago

The difference between a number squared, and that same number is 30. What is the number

Mathematics

1 answer:

Volgvan2 years ago

6 0

Answer:

n^2 = n + 30

n^2 -n -30 = 0

Solving by quadratic formula

numbers equal 6 AND -5

DOUBLE -CHECK

6^2 -6 -30 = 0

36 -6 - 30 = 0 CORRECT

-5^2 - -5 -30 = 0

25 +5 -30 = 0 CORRECT

Two numbers 6 and -5

Step-by-step explanation:

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2 years ago

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1 year ago

Peaceful Travel Agency offers vacation packages. Each vacation package includes a city, a month, and an airline. The agency has

UkoKoshka [18]

Answer:

12 packages.

Step-by-step explanation:

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2 years ago

A rectangle has a height of 2x^4 with a width of x^2+8x+15. Express the area of the rectangle.

Amiraneli [1.4K]

Hi there!

We know that the formula for the area of a rectangle is height * width. Thus, we can multiply these two expressions together:

$2x^4\cdot (x^2+8x+15)\\$

Now, we know through the distributive property that we can distribute the $2x^4\\$ to everything in the parenthesis. Once this is done, we get:

$2x^4 \cdot x^2+2x^4\cdot8x+2x^4\cdot15$

Now, we know through the power rule that when two exponents are multiplied together with the same base, the exponent can be added together $(x^a \cdot x^b = x^{a+b})$ . This then would make our equation:

$2x^{4+2}+16x^{4+1}+30x^4\\$

Giving us for our final answer:

$2x^{6}+16x^{5}+30x^4\\$

Hope this helps!

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2 years ago

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STALIN [3.7K]

If X = 23, the. 23 - 6 = 17.

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2 years ago