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3 years ago

What times itself equals 30

2 answers:

7 0

You are looking for a number that, when multiplied by the same number, equals 30. This is can be written as x times x, or $x^{2}$ = 30. To find the answer, all you have to do is take the square root of 30.

$\sqrt{30}$ is approximately 5.477

ahrayia [7]3 years ago

7 0

√30 X √30 equals 30

or

5.477 X 5.477 Answer

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which of the following is the equation of the line that passes though the point (-2,1) and has a slope of 4

Ierofanga [76]

An equation that goes through (-2, 1) and has a slope of 4 is y = 4x + 9.

You can find this by looking for the y-intercept (b) by using the slope (m), the point and slope intercept form. The work is below for you.

y = mx + b

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3 years ago

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3 years ago

Use the formula to solve the equation x^2 + 9x + 8 = 0.

Delvig [45]

Answer:

$x=-8, -1$

Step-by-step explanation:

Given the equation $x^{2} +9x+8=0\\$ ,

By the quadratic formula,

$x=\frac{-b+-\sqrt{b^{2}-4ac } }{2a}$ ,

$x=\frac{-(9)+-\sqrt{(9)^{2}-4(1)(8) } }{2(1)}=\frac{-9+-\sqrt{49 } }{2}=\frac{-9+-7 }{2}$

We have two different solutions for x where $x=\frac{-9-7 }{2}$ and $x=\frac{-9+7 }{2}$

So, x = $-16/2=-8$ and $x=-2/2=-1$

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1 year ago

If C is an infinite set and B is a finite set then C\B is infinite set

makvit [3.9K]

If C = infinity and B = infinity, then:

C = B
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however, C divided by B is undefined.

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2 years ago