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3 years ago

7x2 + 4x - x2 whats the answer?!?

Mathematics

2 answers:

zepelin [54]3 years ago

3 0

Answer:

14 + 2x I think

Step-by-step explanation:

Wait for more responses if needed

ira [324]3 years ago

3 0

Answer:

${6x}^{2} + 4x$

Step-by-step explanation:

1) Collect like terms.

$(7 {x}^{2} - {x}^{2} ) + 4x$

2) Simplify.

${6x}^{2} + 4x$

Therefor, the answer is 6x² + 4x.

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Is three and five a factor pair of 15

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Yes because 3*5 = 15

Factors multiply to get the product.

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3 years ago

Which pair of points is in the solution set for the system of linear inequalities below?

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3 years ago

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3 years ago

A ball rolls over the edge of a platform with only a horizontal velocity. The height of the platform is 1.6 m and the horizontal

Sever21 [200]

Answer:

35 m/s

Step-by-step explanation:

Let gravitational acceleration g = 9.8m/s2. We can calculate the amount of time for the ball to fall vertically a distance of 1.6 m

$1.6 = 9.8t^2/2$

$t^2 = 2*1.6/9.8 = 0.327$

$t = \sqrt{0.327} = 0.571s$

This is also the time it takes for the ball to fly horizontally, assume constant horizontal speed, we can calculate the speed it takes to travel across 20m in 0.571s

v = 20 / 0.571 = 35 m/s

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3 years ago