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Triss [41]
3 years ago
9

F(-2)when f(x) = 2x^2 - 3x + 28? ^ = squared

Mathematics
2 answers:
horsena [70]3 years ago
6 0
The answer of f(-2) is 42
cricket20 [7]3 years ago
6 0

Answer:

Step-by-step explanation:

2x2^2+6+28

2^3+6+28

8+6+28

42

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Step-by-step explanation:

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5 0
3 years ago
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Round 8.87689068442 to 2 decimal places.
Marizza181 [45]

Answer:

The answer is 8.88; You look at the number that comes after the second number (the second place after the decimal) and if that number is 5 or above then you round the second number up. (Sorry if it doesn't make sense, but that's the best I can explain it).

3 0
3 years ago
To evaluate log2(3), Autumn reasoned that since log2(2) = 1 and log2(4) = 2, log2(3) must be the average of 1 and 2 and therefor
geniusboy [140]

Answer:

log₂(3) = 1.585 ≠ 1.5

Her thinking is not valid because the technique of average is valid only  if the graph of the function is a straight line, but the graph of the log function is not a straight line.

Therefore the values cannot be taken by average

Step-by-step explanation:

Given:

log₂(2) = 1

log₂(4) = 2

To evaluate :  log₂(3)

Now,

we know that

logₓ(y) = \frac{\log(y)}{\log(x)}        (Here the log has same base in the numerator and the denominator i.e 10)

therefore,

log₂(3) =  \frac{\log(3)}{\log(2)}

also,

log(2) = 0.3010

log(3) = 0.4771

thus,

log₂(3) =  \frac{0.4771}{0.3010}

or

log₂(3) = 1.585 ≠ 1.5

Her thinking is not valid because the technique of average is valid only  if the graph of the function is a straight line, but the graph of the log function is not a straight line.

Therefore the values cannot be taken by average

7 0
3 years ago
Angles PTQ and STR are vertical angles and congruent. which arcs are congruent
KiRa [710]
PT=ST and QT=TR, when angles are verticals their opposite arcs are equivalent. i think. someone feel free to correct me if this is wrong
4 0
3 years ago
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Sasha places an online order. In addition to the price of the item she orders, she pays 5% tax and a flat shipping fee of $15. T
natita [175]

Answer:

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Step-by-step explanation:

Let the price is x.

<u>Set the equation and solve for x:</u>

  • (x + 5%) + 15 = 141
  • 1.05x + 15 = 141
  • 1.05x = 126
  • x = 126/1.05
  • x = 120
8 0
3 years ago
Read 2 more answers
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