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lara31 [8.8K]
3 years ago
9

-14^2-8+3-6x^2+7x-11

Mathematics
1 answer:
denis-greek [22]3 years ago
5 0
The answer is <span><span>−<span>6<span>x2</span></span></span>+<span>7x</span></span>−<span>212</span>
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Find the cost of 20 grams of lead at 60$ per kilogram
ASHA 777 [7]

Answer:

$1.20

Step-by-step explanation:

Ratio:

Grams : Kilograms

1 : .001

Multiply both sides by 20 to convert grams to kilograms:

Grams : Kilograms

1 : .001

x20 x20

20 : .02

This means that 20 grams of lead = .02 kilograms of lead

Price:

Cost : Kilogram

$60 : 1

Multiply both sides by .02 to find the price of the lead:

Cost : Kilogram

$60 : 1

x.02  x.02

$1.20 : .02

Therefore, .02 kg of lead costs $1.20.

6 0
3 years ago
3x^3-2x^2-147x+98=(ax-c)(bx+d)(bx-d) where a,b,c and d positive integers. Work out the value of a,b,c and d
Alexxx [7]

Expand the right side:

(ax-c)(bx+d)(bx-d)=(ax-c)(b^2x^2-d^2)

=ab^2x^3-b^2cx^2-ad^2x+cd^2

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Then

-ad^2=-147\implies a=\dfrac{147}{49}=3

and

ab^2=3\implies b^2=1\implies b=1

6 0
3 years ago
If Y=-5x-6 What is the value of Y hen.
Scorpion4ik [409]

The value of 'y' is exactly 6 less than the negative fifth multiple of 'x'.


7 0
3 years ago
A snow globe with a radius of 2 cm. Find the volume of the globe.
sp2606 [1]
The approximate volume is 33.5103217
The exact volume is 32/3cm 
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3 0
3 years ago
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finlep [7]

Answer:

the anwsere is d>?

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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