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3 years ago

( ) - (2x4 - 2x2 - 3) = x4 + x3 - 2x2 + x find the missing polynomial;s

1 answer:

8 0

X⁴ + x³ - 2x² + x + (2x⁴ - 2x² - 3) =
x⁴ + x³ - 2x² + x + 2x⁴ - 2x² - 3 =
3x⁴ + x³ - 4x² + x - 3 ← the missing polynomial

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One month Tammy rented 2 movies and 6 video games for a total of $ 42 . The next month she rented 5 movies and 3 video games for

EastWind [94]

Answer:

The rental cost of one movie is $2.25 and the rental cost of one video game is $6.25

Step-by-step explanation:

Let the rental cost of 1 movie be m.

Let the rental cost of 1 video game be v.

One month, Tammy rented 2 movies and 6 video games for a total of $42. This means that:

2m + 6v = 42 ________ (1)

The next month she rented 5 movies and 3 video games for a total of $30. This means that:

5m + 3v = 30 _________(2)

We now have two simultaneous equations:

2m + 6v = 42 ________ (1)

5m + 3v = 30 _________(2)

Multiply (2) by 2, and we have:

2m + 6v = 42 __________ (1)

10m + 6v = 60 _________ (3)

Subtract (1) from (3):

10m + 6v = 60

- 2m + 6v = 42

8m = 18

=> m = 18 / 8

m = $2.25

Put the value of m back in (1):

2(2.25) + 6v = 42

4.5 + 6v = 42

=> 6v = 42 - 4.5 = 37.5

v = 37.5 / 6

v = $6.25

Therefore, the rental cost of one movie is $2.25 and the rental cost of one video game is $6.25

5 0

3 years ago

a plumber charges a service call fee of $25 plus $40 for each hour she works. which variable is the independent variable?

Viktor [21]

I think I'd be the $40 she charges every hour she works. If this is multiple choice mind drop-in the options

4 0

3 years ago

Read 2 more answers

Which number can be written as a fraction and is therefore Rational?

djverab [1.8K]

Answer:

0.89898989.... is the correct answer

Fraction form: $\frac{89}{99}$

Step-by-step explanation:

0.89898989.... is the correct answer because it can be written as $\frac{89}{99}$ in the simplest form. and 0.89898989.... is rational because it is a repeating number.

Any rational number is a number that can be written as a fraction, a repeating decimal, a whole number, an integer, etc. As long as the number is a number with infinite digits like π.

6 0

2 years ago

PLEASE HELP !!!

katen-ka-za [31]

Answer:

final cost of 3 pounds: 8 dollars

final cost of p pounds: 3.75p - 3.25 dollars

Step-by-step explanation:

Each pound costs $3.75, so 3 pounds cost 3*3.75 = 11.25 dollars. Subtract off the $3.25 to get the final cost to be 11.25-3.25 = 8 dollars. This takes care of the first part.

For the second part, the expression for the final cost is 3.75p - 3.25; where the 3.75p is the cost before the coupon is applied. If you plugged p = 3 into that expression, you should get 8 as a result. The variable p is some positive whole number. It's a place holder for the number of pounds of apples.

4 0

3 years ago

Use the Distributive Property to simplify the following expression -2 (x + 3)

Dmitry_Shevchenko [17]

Answer:

-2x-6

Step-by-step explanation:

-2(×+3)

-2x-2.3

-2x-6

4 0

3 years ago