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morpeh [17]
3 years ago
12

What is the product of (3a + 2)(4a? - 2a + 9)?

Mathematics
1 answer:
yan [13]3 years ago
4 0

Answer:

The answer is 12a^3+2a²+23a+18 ....

Step-by-step explanation:

The given terms are:

(3a + 2)(4a² - 2a + 9)

Now multiply each value of second bracket with the first bracket:

=4a²(3a+2) -2a(3a+2)+9(3a+2)

=12a^3+8a²-6a²-4a+27a+18

Solve the like terms:

=12a^3+2a²+23a+18

Therefore the answer is 12a^3+2a²+23a+18 ....

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The perimeter of parallelogram PQSR is 74cm. What is QS?
saveliy_v [14]

parallelogram , opposite sides are equal

so

PR = QS

and

PQ = RS

4x - 1 = 3x + 7

x = 8


PQ = 4(8) - 1 = 32 -1 = 31

Given P = 74 cm


74 - 2(31) = 12

PR = QS = 12/2 = 6


Answer

QS = 6 cm


6 0
3 years ago
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How do you determine where to place the decimal point in the product?
frez [133]

Let's look at an example:

2.24 x 21.6

2.24\\ 21.6\\ ______

Do normal multiplication and get

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~theLocoCoco

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3 years ago
Explain why the graph of the equation g(x) = -(x + 1 ) - 3 would be a parabola opening downward.
sashaice [31]

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<u>Step-by-step explanation:</u>

The vertex form of a quadratic equation is: y = a(x - h)² + k    where

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Given: g(x) = - (x + 1)² - 3

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Since the a-value is negative, the parabola will be reflected over the x-axis which will change the curve from (U-shaped) to (∩-shaped).

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When servicing a heating boiler and radiators, a plumber knows that the time
Elena L [17]
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mezya [45]

Answer:

Step-by-step explanation:

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