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3 years ago

To factor 9x^2 - 4, you can first rewrite the expression as:

Mathematics

1 answer:

olga2289 [7]3 years ago

4 0

Answer:

C. (3x)^2 - (2)^2

Step-by-step explanation:

Each of the two terms is a perfect square, so the factorization is that of the difference of squares. Rewriting the expression to ...

(3x)^2 - (2)^2

highlights the squares being differenced.

We know the factoring of the difference of squares is ...

a^2 -b^2 = (a -b)(a +b)

so the above-suggested rewrite is useful for identifying 'a' and 'b'.

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How do you make an exponential equation with these two points: (1,2) and (0.5,4)

Over [174]

The required equation is y=8×( $( \frac{1}{2} )^{x}$

Step-by-step explanation:

Given,

The two points are (1,2) and (0.5,4)

To find the exponential equation of these given points.

Formula

The general form of exponential equation is y = $ab^{x}$ where, A and B are any real number.

$\frac{x^{m} }{x^{n} } = x^{m-n}$

Now, the points satisfy the equation.

So,

2 = $ab^{1}$ ------- (1) and

4 = $ab^{0.5}$ ------ (2)

Now (1) ÷ (2) we get,

$\frac{ab }{ab^{0.5} }$ = $\frac{2}{4}$

or, $b^{0.5}$ = $\frac{1}{2}$

or, b = $\frac{1}{4}$ [ by squaring we get]

Now, from (1) we get,

2 = a× $\frac{1}{4}$

or, a = 8

Hence,

The equation is y=8×( $( \frac{1}{2} )^{x}$

4 0

3 years ago

In slope intercept form, write the equation of the line passing through the points (-3.4) and (-4.2).

Oliga [24]

Answer: hi I 4 my broter wa in thi ap

Step-by-step explanation:

6 0

3 years ago

Will mark brainliest!

katovenus [111]

Answer:

4.817+9.099+17.008=30.924

484.603-48.198=436.405

Estimation 5+9+17=31

485-48=437

Just round each decimal to the nearest whole number and add or subtract

6 0

2 years ago

Read 2 more answers

A circle is centered at (3,8) and is tangent to the x-axis. write its equation in standard form.

Tema [17]

Answer:

Step-by-step explanation:

8 0

3 years ago

80, 84, 79, 44, 87, 73, 89, 90, 82, 89, 93, 97, 77, and 71 whats the mean

Contact [7]

Answer:

sum up the numbers and divide by the numbers of values.

80+84+79+44+87+73+89+90+82+89+93+97+77+71 / 14

1135/14

= 81•1 is the mean

5 0

2 years ago