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Virty [35]
3 years ago
6

Solve the quadratic equation x square + 6 x + 9 equals 0​

Mathematics
1 answer:
Nataly [62]3 years ago
4 0
X^2 + 6x +9
(x+3) (x+3)

x+3 = 0
x = -3

answer: x=-3
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A:48 B:45

Step-by-step explanation:

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3 years ago
Why does cube root 7 equal 7 to the 1/3 power
UNO [17]

Answer:

Step-by-step explanation:

Here's how you convert:

\sqrt[n]{x^m}=x^{\frac{m}{n}  The little number outside the radical, called the index, serves as the denominator in the rational power, and the power on the x inside the radical serves as the numerator in the rational power on the x.

A couple of examples:

\sqrt[3]{x^4}=x^{\frac{4}{3}

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It's that simple. For your problem in particular:

\sqrt[3]{7} is the exact same thing as \sqrt[3]{7^1}=7^{\frac{1}{3}

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3 years ago
Does 514, 684, 855 make a right triangle
Naily [24]

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No, it does not.

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This does not make a right triangle because in order to have a right triangle you must have 2 of the same numbers.

<em><u>For example:</u></em>

900, 800, 900 makes a right triangle

900, 800, 700 does not.

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5 0
3 years ago
Given the set of integers one through 12 what is the probability choosing an odd number or a number greater than nine
snow_lady [41]

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1/4

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the numbers greater than nine are: 10,11,12

1,3,5,7,9

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7 0
3 years ago
write the product of the expression 5^4 * 5^-7 using a positive exponent, then write the product using a negative exponent
pav-90 [236]

Answer with positive exponent = \left(\frac{1}{5}\right)^3 or  \frac{1}{5^3}

Answer with negative exponent = 5^{-3}

===========================================================

Explanation:

The rule we use is

a^b*a^c = a^{b+c}

If we multiply two exponential expressions with the same base, then we add the exponents.

The base for each is 5. The exponents 4 and -7 add to -3.

This means

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To convert to a positive exponent, we apply the reciprocal to the base. We go from 5, aka 5/1, to 1/5.

So, 5^{-3} = \left(\frac{1}{5}\right)^3 = \frac{1^3}{5^3} = \frac{1}{5^3}

3 0
3 years ago
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