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LekaFEV [45]
3 years ago
9

Find f(-2) for the function f(x)=3x^2-2x+7

Mathematics
1 answer:
Yuliya22 [10]3 years ago
5 0

Answer:

23

Step-by-step explanation:

plug -2 in for x then solve

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Solve the following pair of simultaneous equation using elimination method.
sp2606 [1]

Answer:

x = 1 and y = −2

Step-by-step explanation:

Rewrite equations:

x + 2y = −3

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Step 1: Solve x+2y=−3 for x:

x + 2y = −3

x + 2y + −2y = −3 + −2y (Add -2y to both sides)

x = −2y − 3

Step 2: Substitute −2y − 3 for x in 3x − 2y = 7:

3x − 2y = 7

3(−2y − 3) − 2y = 7

−8y − 9 = 7 (Simplify both sides of the equation)

−8y − 9 + 9 = 7 + 9 (Add 9 to both sides)

−8y = 16

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x = −2y − 3

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x = 1 (Simplify both sides of the equation)

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3 years ago
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goblinko [34]

Answer:

Step-by-step explanation:

Therefore, the probability this student will receive 2 or more offers is 0.663 to 3 decimal places.

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Step-by-step explanation:

"U" is the set of whole numbers form 1 to 8

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