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Elan Coil [88]
3 years ago
12

Can someone please answer this question please answer it correctly and please show work please help me I need it

Mathematics
1 answer:
I am Lyosha [343]3 years ago
5 0

Answer:

C

Step-by-step explanation:

6−13

=6−13

=6+−13

=−7

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for the first pic

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Step-by-step explanation:

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car purchased for 18,500 after each year the resale value decreases by 30%. what will the resale value be after 4 years
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Equation is 18500x.70 to the power of x

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Factor −12−12 out of −12x+6.
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6 0
3 years ago
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Let R be the triangular region in the first quadrant with vertices at points (0,0), (a,0), and (0,b), where a and b are positive
Salsk061 [2.6K]

Answer:

volume of the solid generated when region R is revolved about the x-axis is π ₀∫^a ( \frac{-b}{a}x + b )² dx

Step-by-step explanation:

Given the data in the question and as illustrated in the image below;

R is in the region first quadrant with vertices; 0(0,0), A(a,0) and B(0,b)

from the image;

the equation of AB will be;

y-b / b-0 = x-0 / 0-a

(y-b)(0-a) = (b-0)(x-0)

0 - ay -0 + ba = bx - 0 - 0 + 0

-ay + ba = bx  

ay = -bx + ba

divide through by a

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The volume of the solid revolving R about x axis is;

dv = Area × thickness

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= π ( \frac{-b}{a}x + b )² dx

V = π ₀∫^a ( \frac{-b}{a}x + b )² dx

Therefore,  volume of the solid generated when region R is revolved about the x-axis is π ₀∫^a ( \frac{-b}{a}x + b )² dx

6 0
3 years ago
Which expression is equivalent to r^m ÷ r^n?
Andre45 [30]
R^m ÷ r^n is equal to r^(m-n). 

For example, 2^5 <span>÷ 2^3 = 2^2.
</span>
Is that what you mean?
7 0
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