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Lina20 [59]
2 years ago
12

Please help omg I don’t understand

Mathematics
1 answer:
In-s [12.5K]2 years ago
5 0
The answer will be c
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What is the total cost of one dozen pens if each pen costs 0.29
LUCKY_DIMON [66]
The total cost would be $3 dollars and 48 cents because one dozen is equal to 12. Just multiply 0.29 by 12 to get $3.48.
6 0
2 years ago
The graph of a quadratic function having the form f(x) = ax? + bx + c passes
insens350 [35]

Answer:

  f(-3) = -20

Step-by-step explanation:

We observe that the given x-values are 3 units apart, and that the x-value we're concerned with is also 3 units from the first of those given. So, a simple way to work this is to consider the sequence for x = 6, 3, 0, -3. The corresponding sequence of f(x) values is ...

  34, 10, -8, ?

The first differences of these numbers are ...

  10 -34 = -24

  -8 -10 = -18

And the second difference is ...

  -18 -(-24) = 6

For a quadratic function, second differences are constant. This means the next first-difference will be ...

  ? -(-8) = -18 +6

  ? = -12 -8 = -20

The value of the function at x=-3 is -20.

_____

The attachment shows using a graphing calculator to do a quadratic regression on the given points. The graph can then be used to find the point of interest. There are algebraic ways to do this, too, but they are somewhat more complicated than the 5 addition/subtraction operations we needed to find the solution. (Had the required x-value been different, we might have chosen a different approach.)

5 0
2 years ago
There is a crab on the ocean for 60 feet below sea level in a bird 120 feed in the air. how far apart are the crab in the bird?
Step2247 [10]
The answer is the crab and the bird are 180 feet apart
4 0
2 years ago
What is the distance between point R (−1, 7) and point T (−7, 7) ?
zepelin [54]
You can use the distance formula to find the distance between any two points ion the plane. In this case, look carefully at the coordinates:
R(-1, 7) and T(-7, 7), Notice they both have y-coordinate 7. That means they are both on the same horizontal line. To find their distance, just subtract -7 from -1 and take the absolute value.

|-1 - (-7)| = |-1 + 7| = |6| = 6

The distance is 6 units
7 0
3 years ago
Read 2 more answers
Consider the graph of the quadratic function y = 2x2 – 4x + 2.
Ierofanga [76]

Answer:

The function only has one zero.

x = 1  actual coordinate (1, 0) on graph

Step-by-step explanation:

8 0
3 years ago
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