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pochemuha
4 years ago
12

Choose the correct simplification of the expression -3x^2(5x-4x^2-6)

Mathematics
2 answers:
MrMuchimi4 years ago
6 0

Answer is leader B

Step-by-step explanation:

zepelin [54]4 years ago
5 0

Answer:

12x^4-15x^3+18x^2

Step-by-step explanation:

We are given the expression: -3x^2(5x-4x^2-6)

The first thing that can be done is to rearrange the numbers in the parenthesis so that it is in the descending exponents, so that our answer will match the options given..

When this is done, we get -3x^2(-4x^2+5x-6)

Now, we can distribute the -3x^2 to each of the terms in the parenthesis

-3x^2(-4x^2+5x-6)\\\\12x^4-15x^3+18x^2

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Answer:

x+13

Step-by-step explanation:

The answer would be 1 or uh.. x+13

6 0
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Graph the functions f(x)=−2x−6 and g(x)=−2x−6 on the same coordinate plane.
andriy [413]

Answer:

3 and 1

Step-by-sep explanation:

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4 0
4 years ago
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4 years ago
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A spring stretches to 22 cm with a 70 g weight attached to the end. With a 105 g weight attached, it stretches to 27 cm. Which e
rosijanka [135]
Assume that the spring behaves linearly so that
y = a + bx
where 
x = weight of the mass
y =  stretch of the spring
a,b are constants

When x = 70 g, y = 22 cm, therefore
a + 70b = 22             (1)

When x = 105g,  y = 27 cm, therefore
a + 105b = 27           (2)

Subtract (1) from (2).
a + 105b - (a + 70b) = 27 - 22
35b = 5
b = 0.1429

From (1), obtain
a = 22 - 70*0.1429 = 12

Answer:
The required equation is
y = 12 + 0.1429x

7 0
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ch4aika [34]

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