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slava [35]
3 years ago
12

Find f(-3) if f(x) = x 2.

Mathematics
2 answers:
Gala2k [10]3 years ago
8 0

Answer:

Step-by-step explanation:

f(-3) = (-3)² = (-3) * (-3) = 9

ValentinkaMS [17]3 years ago
6 0

Answer:

-6

Step-by-step explanation:

All you have to do is plug in the -3 in the expression so the new expression would be -3(2) so the answer is -6

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1. Which fractions are equivalent to 25/45?
Mamont248 [21]

Answer: 1. C, 2. B, 3. C, 4. C, 5. B, 6. B



3 0
3 years ago
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The population of a bacteria sample doubles every 6 hours. How long would it take for the population to triple?
seraphim [82]

The way to solve this question is to essentially reverse the equation I used in the other answer.


I would solve this with some theoretical values. If you start with 3, how long would it take for it to triple, or reach 9.


the equation would look like 9 = 3(2)^t/6, note how the instead of 1/2 it is now 2 in the parenthesis, as it doubles every 6 hours rather than halves every amount of hours.


When placed into an algebra calculator, the answer should be about 9.5 hours

8 0
3 years ago
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a jacket originally sold for $45. this week it went on sale for 20% off. what is the discount and what is the sales price?
Strike441 [17]

Answer:

discount = 9

new price = 36

Step-by-step explanation:

The discount is the price times the discount percent

45 * 20%

Change to decimal form

45*.20

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45-9 = 36

4 0
3 years ago
I need help plz help
arsen [322]

Answer:

126

Step-by-step explanation:

To solve this, we need to use PEMDAS: Parentheses, exponents, multiplication, division, addition, subtraction

((4 x 8) + 10) x 3

Parentheses - multiplication

(32 + 10) x 3

Parentheses - addition

42 x 3

multiplication

126

3 0
3 years ago
A circle is drawn within a square as shown. What is the best approximation for the area of the shaded region? Use 3.14 to approx
fgiga [73]
In the shown picture, To find the shaded area we need to find the total area of the square, subtracted by the area of the circle.

the area of the shaded region = the area of the square - the area of the circle

the area of the square = L² = 7² = 49 cm²

the area of the circle = πr² = 3.14 x 3.5² = 38.5 cm²

the area of the shaded region = 49 - 38.5 = 10.5 cm²

3 0
3 years ago
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