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Alik [6]
3 years ago
6

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

Mathematics
1 answer:
denis-greek [22]3 years ago
7 0

Answer:

  23

Step-by-step explanation:

Maybe you want to evaluate ...

  f(x) = 3x^2 -2x +7

for x = -2.

Put the value of x where x is, then do the arithmetic.

  f(-2) = 3(-2)^2 -2(-2) +7 = 3(4) +4 +7

  f(-2) = 23

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I hope this helps!

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Explain how to find the square root of 100. Explain why you use ± the sign.
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3 years ago
A box of oatmeal must contain 16 oz. The machine that fills the oatmeal boxes is set so that, on the average, a box contains 16.
Rudiy27

Answer:

0.1587

Step-by-step explanation:

Use this website : https://www.numerade.com/questions/a-box-of-oatmeal-must-contain-16-oz-the-machine-that-fills-the-oatmeal-boxes-is-set-so-that-on-the-2/

7 0
3 years ago
Police plan to enforce speed limits by using radar traps at four different​ locations, Upper L 1L1​, Upper L 2L2​, Upper L 3L3​,
horsena [70]

Answer:

This person have a 29 % probability to receive a speeding​ ticket

Step-by-step explanation:

The probability of receive a speeding​ ticket in one of the traps is equal to the probability of going through that trap during the operation time of the trap.

Like we have four traps, and the probabilities are independent,  then the probability of receive a speed ticket in one of them, is the sum of the probability for each trap.

P=P1+P2+P3+P4

The probability of going through a trap during the operation time is obtained by multiplying the probability of passing through the​ trap by the frequency of operation

Frequency of operation:

TL1 ⇒ 40 % = 0.4

TL2 ⇒ 30 % = 0.3

TL3 ⇒ 20 % = 0.2

TL4 ⇒ 30 % = 0.3

Probability of passing through these​ locations

PL1 ⇒ 0.3

PL2 ⇒ 0.2

PL3 ⇒ 0.4

PL4 ⇒ 0.1

then,

P1= TL1*PL1

P2= TL2*PL2

P3= TL3*PL3

P4= TL4*PL4

and

P = TL1*PL1 + TL2*PL2 + TL3*PL3 + TL4*PL4 = 0.12 + 0.06 + 0.08 + 0.03 = 0.29 = 29 %

This person have a 29 % probability to receive a speeding​ ticket

4 0
3 years ago
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