3 years ago

Please give an explanation on why the answer is the answer

Mathematics

1 answer:

NISA [10]3 years ago

4 0

Answer: A

Step-by-step explanation: Because 4 quarts equal a gallon and 4+4 equals 8

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Step-by-step explanation:

Luna's weight = 576 oz

Her bothers package is 1/100 times the weight of hers.

1/100 * 576 = 5.76 oz

Answer to the second part, about 1/2 an oz

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Find the estimates of x^2-x-2=3

Julli [10]

Answer:

$x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

Step-by-step explanation:

Given

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$x^2-x-2=3\\x^2-x-5=0$

Roots of the quadratic equation $ax^2+bx+c=0$ are

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So, for the given equation roots are

$x=\frac{1\pm\sqrt{(-1)^2-4(1)(-5)}}{2\cdot 1}\\x=\frac{1\pm\sqrt{21}}{2}\\so, x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

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I just need to make sure this is correct for a test 6x² - 3x when x=5. my answer was 135

Allushta [10]

Answer:

135 is the correct answer

Step-by-step explanation:

6x^2-3x

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