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dalvyx [7]
3 years ago
14

What is 3X to the second power plus 4X -3+ negative 4X to the second power minus 2X -4 in polynomial form

Mathematics
1 answer:
Lerok [7]3 years ago
8 0

Answer:

The polynomial form of the expression is: 25·<em>X</em>² + 2·<em>X</em> + 2.

Step-by-step explanation:

The expression that can be formed using the provided data is:

(3X)^{2}+(4X-3)+(-4X)^{2}-(2X-4)

Simplify the expression to get a result in polynomial form as follows:

(3X)^{2}+(4X-3)+(-4X)^{2}-(2X-4)

=9X^{2}+4X-3+16X^{2}-2X+5\\\\=(9+16)X^{2}+(4-2)X+(5-3)\\\\=25X^{2}+2X+2

Thus, the polynomial form of the expression is: 25·<em>X</em>² + 2·<em>X</em> + 2.

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Maria’s family hosts a barbeque every month in the summer. In May, they bought 3.2 pounds of hamburger and 3 packages of hot dog
Sindrei [870]
Given:

May:
hamburger: 3.2 pounds * 4.25 = 13.60
hotdogs:     3 packages * 4      = 12
Total cost: 13.60 + 12 = 25.60

June:
hamburger: 3.2 pounds * 1 1/2 = 4.8 pounds * 4.25 = 20.4
hotdogs:      3 packages * 1/3    = 1 package * 4        =   4
Total cost: 20.4 + 4 = 24.4

25.60 - 24.40 = 1.20

They spent more on May by $1.20. Choice C.
5 0
3 years ago
Read 2 more answers
A golf course charges $16 for a package including the full 18-hole course. The course also sells buckets of
MA_775_DIABLO [31]

16x + 21y = 555

Step-by-step explanation:

Let x be the no. of 18-hole course

And y be the no. of golf balls

16x + 21y = 555

6 0
3 years ago
Pleaseeeee helppppp
IRINA_888 [86]

Answer:

  (a)  (6, 2)

Step-by-step explanation:

The system of equations has one of them in y= form, so it lends itself to solution by substitution.

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Using the equation for y to substitute into the first equation, we have ...

  2x -y = 10

  2x -(-1/2x +5) = 10 . . . . . substitute for y

  2x +1/2x -5 = 10 . . . . . eliminate parentheses

  5/2x = 15 . . . . . . . . . add 5, collect terms

  x = 6 . . . . . . . . . . . multiply by 2/5

Using the equation for y, we have ...

  y = -1/2(6) +5 = -3 +5

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The solution is (x, y) = (6, 2).

3 0
2 years ago
If you know can you please help me??
Nezavi [6.7K]
0.42 because i said so
4 0
3 years ago
An Item is priced at $14.91. If the sales tax is 4%, what does the item cost including the tax? A. 30.42 B. $0.60 C.$15.51 D. $2
nydimaria [60]

Answer:

15.51

Step-by-step explanation:

14.91x4%=.60

14.91+.60=15.51

7 0
3 years ago
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