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Yuliya22 [10]
2 years ago
11

What is the value of 3x^2+4x+12 when x=-2

Mathematics
2 answers:
zepelin [54]2 years ago
6 0

Answer:

16

Step-by-step explanation:

3 x -2^2 + 4 x -2 + 12

first do exponents -2 x -2 = 4

3 x 4 + 4 x -2 + 12

Next do multiplication or division from left to right

12 - 8 + 12

now do subtraction or addition from left to right

4 + 12

16

irina [24]2 years ago
3 0
56 is the answer to the equation
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PLEASE PLEASE HELP!! ITS DUE TODAY!!
Nitella [24]

Answer:

7.5 square miles

Step-by-step explanation:

Begin by counting the number of squares that the lake completely or almost completely covers. There are six of these, as indicated by an X. Then find the squares which are about half covered by the lake. These are indicated by a Y. There are three of these. The remainder of the squares that contain some portion of the lake are less than half covered, so we will not count them.

Irregular Object

1 square = 1 sq. mile

Each X counts as one square mile, and each Y counts as 0.5 (12) of a square mile.

(6 × 1) + (3 × 0.5) = 6 + 1.5 = 7.5

The area of the lake is about 7.5 square miles.

4 0
2 years ago
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Ben paid $45 for an old guitar. He cleaned the guitar then resold it after marking up the price 15%. He used 36% of the money he
Alinara [238K]

Answer: I couldn't help you,but here's the answer. I'm not the bot the bot doens't have a cute anime chacter as their profile pic.

https://www.chegg.com/homework-help/questions-and-answers/ben-paid-45-old-guitar-cleaned-guitar-resold-marking-price-15--used-36-money-got-guitar-bu-q66963289

3 0
3 years ago
. In a study about the relationship between the age of a person and the preference for digital vs analog watches, which of the f
Daniel [21]

Answer:

B and the first d and second one.

Step-by-step explanation:

The age is a big factor and b can showing the preference per age

6 0
3 years ago
Which rational number equals 0.333...? 1 over 5, 1 over 3, 3 over 10, 3 over 5
lana [24]

Answer:

1/3

Step-by-step explanation:

let x=0.333...

10x=3.333...

subtract

9x=3

x=3/9=1/3

3 0
3 years ago
If 300 words or typed in 6 minutes how many words will be typed in 17 minutes
Ierofanga [76]

Answer:

850 words can be typed in 17 minutes

Step-by-step explanation:

Divide 300 by 6 and multiply it by 17 and that is your answer, 850.

5 0
2 years ago
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