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2 years ago

Factor the expression 16a^2 -81

Mathematics

1 answer:

exis [7]2 years ago

5 0

According to short multiplication formula - different of squares:

a² − b² = (a − b)(a + b)

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How many times does 1/3 go into 1/18?

Orlov [11]

6 is the answer 18 divided by 3 equals to 6 so that’s the answer

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3 years ago

Read 2 more answers

3. One of the graphs represents

faltersainse [42]

Answer:

3x-2y=6

Step-by-step explanation:

Subtract 3x from both sides of the equation

Divide each term by −2 and simplify.

y=-3+ $\frac{3x}{2}$

Rewrite in slope-intercept form

y= $\frac{3}{2} *-3$

Use the slope-intercept form to find the slope and y-intercept.

Find the values of m and b using the form y=mx+b

$m=\frac{3}{2}$

$b=-3$

The slope of the line is the value of m, and the y-intercept is the value of b.

Slope: $\frac{3}{2}$

y-intercept: -3

Any line can be graphed using two points. Select two x values, and plug them into the equation to find the corresponding y values.

Choose 0 to substitute in for x to find the ordered pair.

(0,−3)

Choose 1 to substitute in for x to find the ordered pair.

$(1,-\frac{3}{2} )$

Graph the line using the slope and the y-intercept, or the points.

slope: $\frac{3}{2}$

y-intercept:-3

5 0

3 years ago

What did Archimedes discover about the centroid of a triangle? (Site 1)

Anna007 [38]

Answer:

Archimedes showed that the point where the medians are concurrent (the centroid) is the center of gravity of a triangular shape of uniform thickness and density

Step-by-step explanation:

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3 years ago

A.) $405.00

marshall27 [118]

$450 since first month was free if it wasn’t free it would’ve been $495

3 0

3 years ago

EASY! PLEASE HELP, I AM STUCK

Marina86 [1]

Answer:

A. 16 seconds.

Step-by-step explanation:

Well, it would take him 4 seconds to get 4/16 of the way, or 1/4. So just multply that by 4 and boom, 16 seconds. (yes ik my technique is weird)

4 0

2 years ago