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3 years ago

How so you round 7,895,164 to the nearest 1,000

Mathematics

1 answer:

lana [24]3 years ago

5 0

Answer: 7,895,164 rounded to the nearest 1,000 is 7,895,000

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Solve x2 + 14x + 17 = –96 for x

jarptica [38.1K]

For this case we have to:

Given the quadratic equation of the form:

$ax ^ 2 + bx + c = 0$

The roots are given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

If we have: $x ^ 2 + 14x + 17 = -96$

We can rewrite it in the following way:

$x ^ 2 + 14x + 17 + 96 = 0\\x ^ 2 + 14x + 113 = 0$

Where:

$a = 1\\b = 14\\c = 113$

Where we have:

$x = \frac {-14 \pm \sqrt {(14) ^ 2-4 (1) (113)}} {2 (1)}$

$x = \frac {-14 \pm \sqrt {(196-452)}} {2}$

$x = \frac {-14 \pm \sqrt {-256}} {2}$

By definition: $\sqrt {-1} = i$

$x = \frac {-14 \pm \sqrt {256} i} {2}$

$x = \frac {-14 \pm16i} {2}$

$x = \frac {-14} {2} \pm \frac {16i} {2}$

$x = -7 \pm8i$

Thus, the roots are given by imaginary numbers:

$x_ {1} = - 7 + 8i\\x_ {2} = - 7-8i$

Answer:

$x_ {1} = - 7 + 8i\\x_ {2} = - 7-8i$

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3 years ago

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What number is 25 percent of 84?

raketka [301]

Answer: 21

Step-by-step explanation:25%=1/4

1/4*84 =84/4

84/4=21

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Gemma has found the car she wants for $3200. In the city she is in, the local tax rate is 7.38%. How much would she need to pay

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Gemma would need to pay $3,436.16 to be able to purchase the car she wants.

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Answer:

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Step-by-step explanation:

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Answer:

6. 45 × (1 + 0.4) = 63

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2 years ago