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3 years ago

Need help with homework please

Mathematics

1 answer:

torisob [31]3 years ago

7 0

4. (9x^2 + 13x) + (4x^2 - 8x)

(9x^2 + 13x)

9x^2 = 81 x + 13 x = 94x

(4x^2 - 8x)

4x^2 = 16x - 8x = 8x

94x + 8x = 102x

The answer is 102x

5. (x^2 + 4x + 6) + (x^2 + 8x + 3)

(x^2 + 4x + 6)

4x + 6 = 10x

10x + x^2 = 10x^2

(x^2 + 8x + 3)

8x + 3 = 11x

x^2 + 11x = 11x^2

The answer i 11x^2

6. (-3x^2 + 2x - 8) + (x^2 + 4x)

(-3^2 + 2x + 8)

-3^2 = 9

2x + 8 = 10x

10x + 9 = 19x

(x^2 + 4x)

x^2 + 4x = 4x^2

19x + 4x^2 = 23x^2

The answer is 23x^2.

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Help with this question!Please

Nimfa-mama [501]

Answer= 60
For both answers X= 60

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3 years ago

Read 2 more answers

A 6 sided number cube is tossed. what is the probability of rolling a 6 or an odd number?

Veronika [31]

For any probability the formula is $P_{desired}=\frac{desired}{total}$ . In this case we have 4 desired outcomes (the odds, 1, 3 and 5, and also 6) out of 6 total sides, so our probability $P_{oddor6} =\frac{odd or 6}{total sides}=\frac{4}{6} = \frac{2}{3}$ .

Mutually exclusive means the events cant occur at the same time. In our case it is not possible to roll both a 6 and an odd number at the same time since 6 is even. Therefore the events ARE mutually exclusive.

Combine the two parts and C is the correct answer. <span />

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3 years ago

Twelve Divided by the sum of a number and five

fredd [130]

12/x+5
x represents “a number” because it’s unknown and the + sign is because the words sum

6 0

3 years ago

if the area of a rectangle is expressed as x^4 - 9y^2, then the product of the length and the width of the rectangle could be ex

kvasek [131]

Answer:the product of the length and the width of the rectangle could be expressed as

(x^2 - 3y)(x^2 + 3y)

Step-by-step explanation:

If the area of a rectangle is expressed as x^4 - 9y^2, we would determine the dimensions by simplifying the given expression. The simplified expression becomes

(x^2 - 3y)(x^2 + 3y)

Let us check by multiplying each term in one parenthesis by each term in the other parenthesis to get the given expression. It becomes

(x^2 - 3y)(x^2 + 3y) = x^4 + 3x^2y - 3x^2y - 9y^2 = x^4 - 9y^2

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3 years ago

There..?

QveST [7]

The answer should be:

Domain: All real

numbers

greater than or

equal to 0 and

less than or

equal to 100

Range: all real

numbers

greater than or

equal to 0 and

less than or

equal to 50

3 0

3 years ago