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3 years ago

13

Mrs.Gilbert timed her fastest student running down the hallway. Her student ran from one end to the hall to the other in 10% of

minute. How many seconds did it take the student to run down the hallway?

1 answer:

ad-work [718]3 years ago

4 0

She ran in 54 seconds.

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a dozen scones cost $5.95. calculate the unit rate showing scones per dollar and the unit rate showing dollars per scone

kati45 [8]

Answer:

2 scones per dollar

$0.50 per scone

Step-by-step explanation:

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3 years ago

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Svetach [21]

Answer:

135°

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Determine whether the polynomial below can be factored into perfect squares. If so, factor the polynomial. Otherwise, select tha

kkurt [141]

Answer:

A. $=(9x-12)^2$

Step-by-step explanation:

We need to determine whether the polynomial $81x^2-216x+144$ can be factored into perfect squares. If so, factor the polynomial. Otherwise, select that it cannot be factored into a perfect square.

$81x^2-216x+144$

$=9(9x^2-24x+12)$

$=9(9x^2-12x-12x+12)$

$=9(3x(3x-4)-4(3x-4))$

$=9(3x-4)(3x-4)$

$=9(3x-4)^2$

$=3^2(3x-4)^2$

$=(3(3x-4))^2$

$=(9x-12)^2$

Hence choice A. $=(9x-12)^2$ is correct.

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3 years ago

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<h2>The third graph</h2><h3 /><h3>The graph has a slope of 2</h3><h3>and a y-intercept of -4</h3>

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A number represented by x times -0.4 is 2.5, what is the value of x?

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-0.4x=2.5 divide both sides by -0.4

x=-6.25

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3 years ago