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FinnZ [79.3K]
3 years ago
8

Simplify and find the value of the expression if x=2 and y = 13xy (4x- 5y) +3xsquare y

Mathematics
1 answer:
maria [59]3 years ago
3 0

Answer:

13 + 4(2) - 5(13) + 3

<em>multiply the numbers</em>

13 + 8 - 65 + 3

<em>calculate the sum or difference </em>

= -41

Step-by-step explanation:

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PLEASE HELP PLEASE PLEASE
statuscvo [17]

First differences are ... 0-7 = -7, -1-0 = -1, 4-(-1) = 5, 15-4 = 11, 32-15 = 17.

Second differences are -1-(-7) = 6, 5-(-1) = 6, 11-5 = 6, 17-11 = 6.

The second differences are constant at 6, so the table values would be best fit by a function that is ...

  • quadratic

_____

The degree of the polynomial function corresponds to the level of differences that are constant (when the x-values are evenly spaced).

The quadratic function that matches these values is

... y = 3x² +2x -1

... y = (3x-1)(x+1) . . . . in factored form

7 0
3 years ago
girls made 90 brownies for a school party. they put walnuts in 3/5 of the brownies. of the brownies that had walnuts, 1/3 of tho
nevsk [136]

Answer:

only 6 brownies had both chocolate and walnuts


Step-by-step explanation:

lets found out how many brownies had walnuts.

90/5= 18

18x3= 54 brownies had walnuts.

_______________________________________________

chocolate brownies.

90/3= 30 brownies had chocolate.

________________________________________

54+ 30= 84 brownies

90-84= 6


7 0
3 years ago
AYE HELP ME OUT GUYS!!! Question is in the screen shot below
klemol [59]
The scale factor is 4:1 ..........
8 0
3 years ago
Marcello gets paid $18 per hour at his job. He takes a $4 uber ride to get to work and a $4 uber ride to get home. If he works 8
vivado [14]

Answer:

$136

Step-by-step explanation:

x = per hour

y = total profit

4 + 4 = 8

Equation:

y = 18x - 8

y = 18(8) - 8

y = 144 - 8

y = 136

8 0
3 years ago
True or false The range of F(x)= log b x is the set of all positive real numbers
labwork [276]
The range of a log function is generally "all real numbers." The range of F(x) will depend on the domain on which it is defined. If it is defined for all positive numbers x, then the range is (-∞, ∞).

FALSE
5 0
4 years ago
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