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Arturiano [62]
3 years ago
9

Evaluate 2a - b for a = 2 and b = 3.

Mathematics
2 answers:
AlexFokin [52]3 years ago
6 0
The answer would be 1
SVEN [57.7K]3 years ago
4 0
2a - b....a = 2 and b = 3

2(2) - 3 = 
4 - 3 =
1
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Tell whether the number is written correctly in scientific notation. 9.9 times 10*-4
Mnenie [13.5K]
\text{ 9.9 x 10}^{-4}

That is the correct number.

6 0
1 year ago
Which equation best represents the data? y = –1.026x2 1016.402x – 162075 y = –1.036x2 1024.771x – 163710 y = 298.214x – 66317.66
AleksAgata [21]

The table on the items produced by this company and the profits derived from these goods shows that the best model is y = -1.026x² + 1,016.402x - 162,075.

<h3>Which model best represents the data?</h3><h3 />

Find out the best model by testing all models assuming a given value of x. The model that gives a y value closest to the actual value is the best model.

Assuming x is 100:

= -1.026x² + 1,016.402x - 162,075

= (-1.026 x 100²) + (1,016.402 x 100) - 162,075

= -$70,694.80

Second model:

= -1.036x² + 1024.771x - 163710

= (-1.036 x 100²) + 1024.771 x 100 - 163710

= -$71,593

Third model:

=  298.214x - 66317.667

= 298.214 x 100 - 66317.667

= -$36,496.27

Fourth model:

= 196.2x - 18710

= 196.2 x 100 - 18,710

= $910

The best model is therefore the first model which shows the closest value to the actual y value of -$70,500 when x is 100.

Find out more on fitting models at brainly.com/question/2564940.

#SPJ4

6 0
2 years ago
Read 2 more answers
What are the domain and range of f(x) = 4* – 8?
White raven [17]

Answer:

domain: {x | x is a real number}

range: {y l y> -8}

Step-by-step explanation:

f(x) = 4x² – 8 is a parabola, a U shape.

Since the stretch factor, 4, is positive, it opens up, there it will have a minimum value, the lowest point in the parabola.

y > -8  because the minimum is -8.

Parabolas do not have restricted "x" values. "4" does not restrict x because it is the stretch factor, which determines how wide the parabola is.

Quadratic standard form:

f(x) = ax² + bx + c

"a" represents how wide the graph is. If it's negative it opens down, if it's positive it opens up.

"b", if written, tells you it is not centred on the y-axis. It is not written, so the vertex is on the y-axis.

"c" is the y-intercept. In this case, since b = 0, it is also the minimum value.

7 0
3 years ago
Please help me determine this guys
HACTEHA [7]
This graph is a correct representation of the given quality! What I did was plug it into this online graphing calculator called desmos, you can use that!!
5 0
3 years ago
Which expression is equivalent to −16y+13 ?
monitta

Answer:

None of them

Step-by-step explanation:

-16 y+13

16(−y+2)  = -16 +32

−16(−y+13) = 16y -208

−16(y+2)  = -16y -32

16(−y+13)= -16y+208

3 0
4 years ago
Read 2 more answers
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