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Ksju [112]
3 years ago
9

The Johnsons sold their classic car for $15,000. This price is 1,000 more then twice the amount they originally paid. How much d

id they originally pay
Mathematics
1 answer:
Crank3 years ago
5 0
I think it is 7,000.
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Given the quadratic equation: f(x) = x2+4x-21
ryzh [129]

Answer:

x = - 7, x = 3

Step-by-step explanation:

To find the x- intercepts let f(x) = 0 , that is

x² + 4x - 21 = 0

Consider the factors of - 21 which sum to give the coefficient of the x- term (+ 4)

The factors are + 7 and - 3, since

7 × - 3 = - 21 and 7 - 3 = + 4, then

x² + 4x - 21 = 0

(x + 7)(x - 3) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 7 = 0 ⇒ x = - 7

x - 3 = 0 ⇒ x = 3

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Simplify 3 · 2x. What is the coefficient?<br> • 2<br> • 3<br> • 6
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Step-by-step explanation:

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Anastaziya [24]

Answer: 107 units.

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Rearranging the equation gives,
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3 years ago
Crew b earns $315 after 3 hours, $525 after 5 hours, and $735 after 7 hours of work. Explain whether or not Crew b's data show a
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it in creases by 110 every hour

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