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Anika [276]
3 years ago
5

Pleaseee help i’m literally dying

Mathematics
1 answer:
o-na [289]3 years ago
8 0

Answer:

B.

Step-by-step explanation:

x^{2} -y^{2} = (x + y)(x - y)

So, if x + y = 7/10, and x - y = 5/14, x^{2} -y^{2} = (7/10) * (5/14) = 35/140 = 1/4.

(1/2)^2 = 1/4

So, (B) (1/2)^2 is your answer!

Hope this helps!

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Find the marginal profit of C(x)=5x^2, R(x)=x^3+7x+10 and find all values of x for which the marginal profit is zero.
jonny [76]
Marginal profit, P(x) = R(x) - C(x)

P(x) = x³ - 5x² + 7x + 10

x³ - 5x² + 7x + 10 = 0
If you solve it, you get x = -0.839 where P(x) is zero

4 0
3 years ago
Which of the following is 10 times what the 5 represents in 8,145
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5 in 8145 is in the ones place. Hence 10 times of that

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7 0
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Given the equation y = 2 x - 8, what is the slope and the y -intercept?
jeka94

Answer:

m=2 and b=-8

Step-by-step explanation:

This equation is organized in slope-intercept form, y=mx+b. In this form, m is the slope and b is the y-intercept.

When given the equation, y=2x-8, we can see that 2 is in the place of m and -8 is in the place of b. The reason the y-intercept isn't 8 is that y=2x-8 can be written as y=2x+(-8) since y=mx+b involves addition. Therefore, the slope is 2 and the y-intercept is -8.

m=2 and b=-8

I hope this helps!

4 0
3 years ago
Can someone help me?
BabaBlast [244]

Answer:

it is b

Step-by-step explanation:

5 0
2 years ago
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Prove sin^2A + cos^2A = 1
Nady [450]

Step-by-step explanation:

{sin}^{2} A +  {cos}^{2} A  = 1 \\ lhs =  {sin}^{2} A +  {cos}^{2} A  \\  =  {sin}^{2} A +  1 - {sin}^{2} A  \\  = 1 \\  = rhs \\  \therefore \:  {sin}^{2} A +  {cos}^{2} A  = 1 \\

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