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3 years ago

Conner bought a birthday card for $2.19,gift wrap for $3.89,and a game for $13.13. Estimate the total cost

Mathematics

1 answer:

Dmitry [639]3 years ago

3 0

The total cost should be around 19.20

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Answer:

Write a system of equations

Step-by-step explanation:

2x + y = 15

3x - y = 20

5x = 35

x = 7

2(7) + y =15

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3 years ago

If y is directly proportional to x and if y = 20 when x = 6, what is the value of y when x = 9 ?

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Umnica [9.8K]

Answer:

Lily is correct.

An example of a working solution to this problem is: 6/3 + 1/2 + 4/8.

Step-by-step explanation:

An integer is essentially a whole number(is not a part), but with negative numbers as well. Given whole numbers from 1 to 9, This can be an integer because an integer <u>includes</u> whole numbers.

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3 years ago

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CaHeK987 [17]

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3 years ago

Read 2 more answers

Simplify the difference. (–7x – 5x^4 + 5) – (–7x^4 – 5 – 9x)

sineoko [7]

Answer: $2x^4+2x+10$

Step-by-step explanation:

You need to remember the mulplication of signs:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-$

Knowing this, you can distributive the negative sign. Then you get:

$(-7x- 5x^4 + 5) - (-7x^4 - 5 - 9x)=-7x- 5x^4 + 5 +7x^4 + 5 + 9x$

Now you need to add the like terms. Then:

$=2x+2x^4+10$

Finally, you can order the polynomial obtained in descending order. Therefore, the answer is:

$=2x^4+2x+10$

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3 years ago