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3 years ago

What percent of 52 is 12 ? Round your answer to the nearest tenth .

1 answer:

6 0

Approximately 23. It is simple, but if you are asking because you don't know how to find it, divide the smaller number by the bigger number. Then, multiply this number by 100.

Hope I helped!

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Which is the correct way to evaluate f(15) for the function f(x)=2(x+3)?

Thepotemich [5.8K]

Answer:

the first option

Step-by-step explanation:

Start by substituting 15 for x. Then, simplify to get f(15)=36.

cuz

f(x)=2(x+3)

f(15)=2(15+3)

= 2×18=36

gimme brainliest plz

3 0

3 years ago

If you divide one of the roots of the equation 4x2+bx−27=0 by the other root, the quotient will be −3. Find b.

klio [65]

<h3>Answer:</h3>

±12 (two answers)

<h3>Explanation:</h3>

Suppose one root is <em>a</em>. Then the other root will be -3<em>a</em>. The product of the two roots is the ratio of the constant coefficient to the leading coefficient:

(<em>a</em>)(-3<em>a</em>) = -27/4

<em>a</em>² = -27/(4·(-3)) = 9/4

<em>a</em> = ±√(9/4) = ±3/2

Then the other root is

-3<em>a</em> = -3(±3/2) = ±9/2 . . . . . . the roots will have opposite signs

We know the opposite of the sum of these roots will be the ratio of the linear term coefficient to the leading coefficient: b/4, so ...

-(a + (-3a)) = b/4

2a = b/4

b = 8a = 8·(±3/2)

b = ±12

_____

<em>Check</em>

For b = 12, the equation factors as ...

4x² +12x -27 = (2x -3)(2x +9) = 0

It has roots -9/2 and +3/2, the ratio of which is -3.

For b = -12, the equation factors as ...

4x² -12x -27 = (2x +3)(2x -9) = 0

It has roots 9/2 and -3/2, the ratio of which is -3.

4 0

3 years ago

60 POINTS!!!!

Sidana [21]

Answer:

Is the 32,130 a typo

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Solve | x | < 10

Neko [114]

Answer:

Right answer is B) x>-10 and x<10

8 0

3 years ago

Divide. Express the quotient in simplest form.<br> x^2−x−12/2x^2÷x^2+x−6/2x^3

sertanlavr [38]

Hey there!

These are technically expressed as fraction. When you divide a fraction by another, you can replace the second fraction with its reciprocal and you can now multiply the fractions together instead.

$\frac{x^2-x-12}{2x^2} / \frac{x^2+x-6}{2x^3}$

$\frac{x^2-x-12}{2x^2} * \frac{2x^3}{x^2+x-6}$

Now, just multiply across the top and the bottom. You can first cancel out any terms that are repeated or similar.

$\frac{12}{2x^2} * \frac{2x^3}{-6}$

$\frac{2}{x} * \frac{1}{-1}$

$\frac{2}{-x}$

Your answer will be $\frac{2}{-x}$ .

Hope this helped you out! :-)

5 0

3 years ago

Read 2 more answers