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3 years ago

From the sum of 3x^2-5x+1 and x^3 +3x - 1 subtract 2x^3 - 4x2

Mathematics

1 answer:

Mariana [72]3 years ago

5 0

Answer:

it is -x^3 + 7x^2 -2x if you meant subtract 2x^3 - 4x^2 But if you meant subtract. 2x^3 - 4x +2 then the answer is -x^3 +3x^2 +2x -2

Step-by-step explanation:

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Step-by-step explanation:

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4 years ago

11. Suppose a force F varies as the product of two masses, m and M, inversely as

almond37 [142]

Answer:

$k = 6.74 * 10^{-5}$

Step-by-step explanation:

Given

$F\ \alpha\ \frac{m * M}{r^2}$ --- The variation

$F = 675; m = 125; M = 225; r = 0.0530$

Required

Determine the constant of proportionality (k)

$F\ \alpha\ \frac{m * M}{r^2}$

Express as an equation

$F = k\frac{m * M}{r^2}$

Multiply both sides by $r^2$

$Fr^2 = km * M$

Make k the subject

$k = \frac{Fr^2}{m * M}$

Given that: $F = 675; m = 125; M = 225; r = 0.0530$

We have:

$k = \frac{675* 0.0530^2}{125 * 225}$

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5 0

3 years ago

Write the quadratic equation whose roots are 5 and -1 and whose leading coefficient is 4

nlexa [21]

Answer:

4x^2-16x-20

Step-by-step explanation:

(x-5)(x+1)=x^2-5x+x-5=x^2-4x-5

leading coefficient=4

which means that 4(x^2-4x-5)=4x^2-16x-20 is the answer.

8 0

3 years ago

Read 2 more answers

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anyanavicka [17]

I think it would be the first one

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3 years ago