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3 years ago

Find the number.

1 answer:

5 0

"six times a number" is 6x, "is" means equals, 3times the number is 3x and then add the 9 for "9 more than". 6x = 3x + 9. 3x = 9 and x = 3

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Which polynomial is equivalent to this expression if n≠-1n≠-1? 3+n−2n21+n?

Irina18 [472]

I suppose that the expression you wanted to write is $\frac{3+n-2n^2}{1+n}$ . If so, then we have:

$\frac{3+n-2n^2}{1+n}= \frac{3+3n-2n-2n^2}{1+n} \\ \\ = \frac{3(1+n)-2n(1+n)}{1+n} = \frac{(3-2n)(1+n)}{1+n} \\ \\ =3-2n$

7 0

3 years ago

Read 2 more answers

Malika responded that the value of t in the equation, t3 = 64/27 is 8/3. Explain why you agree or disagree with Malika. Justify

Minchanka [31]

Answer:

divide 64/8 and 27/9 to arrive at 8/3 for 64/27

3 0

2 years ago

If f(x)=k g(x), what is the value of k

aalyn [17]

Answer:

the y intercept

Step-by-step explanation:

the k in algebra is the y intercept :))

6 0

2 years ago

What is the third term when -2h4+5h2-3-2h-8h3 is arranged in descending order

Oduvanchick [21]

The third term would be 5h2 because the descending order would be
-2h4 - 8h3 + 5h2 - 2h - 3

8 0

3 years ago

In circle o,find the value of x, rounded to the nearest tenth.

Gemiola [76]

Answer:

$\huge\boxed{x \approx 5.4}$

Step-by-step explanation:

We can break down this problem by first realizing different parts of the circle.

The line which is 8 units long is a chord of the circle.
The line that is 3.6 is almost the radius of the circle
The line that x sits on is the radius.

With this, we can find out if we find the radius of the circle, we have our answer.

We should also note that the angle formed by the 3.6 units long line and the chord is a right angle.

What we need is a way to find the radius of the circle. This will get us x. The radius of a circle will be the length of any line that starts from point O and ends at the circle edge.

If we draw a line connecting the end of the 3.6 line at point O to the end of the 8 unit long chord, we get a triangle! (Image attached for reference).

We can solve for the hypotenuse using the Pythagorean Theorem. This theorem states that:

$\displaystyle a^2 + b^2 = c^2$

Since we know one side is 3.6, we can use that as A. The second side will be 4 since the 3.6 line lies directly in the center of the chord = 8/2 = 4!

$3.6^2 + 4^2 = c^2$
$12.96+16=c^2$
$28.96=c^2$
$\sqrt{28.96} = c$
$5.4 \approx c$

Therefore, since this is the radius of the circle (also the hypotenuse), this can be said for any line that comes from point O onto the edge of the circle.

The line X does just that. Therefore, the value of x is also 5.4.

Hope this helped!

4 0

2 years ago