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3 years ago

Please respond quickly, 15 points up for grabs.

Mathematics

1 answer:

Cerrena [4.2K]3 years ago

3 0

The right answer should be 7 years:)

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What is A divided by A% of A? <br> thank you!

Zina [86]

Suppose A equals 10. Lets use 20% of 10, or 2.

10/2 = 5.

As we can see, the equations varies depending on the percentage used. We can effectively conclude that:

A/(1/5A)
5A.

The equation is equal to the reciprocal percentage times A.

Another example:

50 divided by 10% of 50 (5).

50/5 = A

50 * 1/5 = A

10 = A

4 0

3 years ago

If x>2, then x^2-x-6/x^2-4=

Viefleur [7K]

Consider the expression $\frac{x^{2} -x-6}{ x^{2} -4}$

To factorize the expression in the denominator we use difference of squares: $x^{2} -4=x^{2} - 2^{2} =(x-2)(x+2)$

To factorize $x^{2} -x-6$ we use the following method:

$x^{2} -x-6=(x-a)(x-b)$

where a, b are 2 numbers such that a+b= -1, the coefficient of x,

and a*b= -6, the constant.

such 2 numbers can be easily checked to be -3 and 2

(-3*2=6, -3+2=-1)

So $x^{2} -x-6=(x-a)(x-b)=(x+3)(x-2)$

$
 \frac{x^{2} -x-6}{ x^{2} -4}= \frac{(x+3)(x-2)}{(x-2)(x+2)}= \frac{x+3}{x+2}$

$\frac{x+3}{x+2}= \frac{x+2+1}{x+2}= \frac{x+2}{x+2}+ \frac{1}{x+2}=1+ \frac{1}{x+2}$

for x>2

$\frac{1}{x+2}\ \textless \ \frac{1}{2+2}= \frac{1}{4}$

thus

for x>2,

$1+ \frac{1}{x+2}\ \textless \ 1+ \frac{1}{4}= \frac{5}{4}$

Answer:

for x>2

$\frac{x^{2} -x-6}{ x^{2} -4} = \frac{x+3}{x+2} \ \textless \ \frac{5}{4}$ , (but the expression is never 0)

8 0

4 years ago

n operator in the plant has a monthly salary of $3,200. Thirty-three percent (33%) of her salary is deducted for income tax. How

icang [17]

To find out we need to do

(3,200*33)/100=105,600/100=1,056
is the third choice

3 0

4 years ago

Write in standard form: 40,000 + 200 + 8000 + 9 + 30

Zepler [3.9K]

It is 48,239.

I deeply apologize if this is not what you meant.

4 0

4 years ago

Karen split 5/6 pounds of candy among 3 people,

Temka [501]

Answer:

<h2>5/18 pounds per person.</h2>

Step-by-step explanation:

Givens

Karen split (divides) 5/6 pounts of candy among 3 people.

The problem already says what to do, we need to divide because that's what Karen is doing, she is spliting or dividing the pounds of candy for 3 people. So, we just need to divide 5/6 by 3,

$\frac{5}{6} \div 3 = \frac{5}{6} \times \frac{1}{3} =\frac{5}{18}$

Therefore, the unit rate in pounds per person is 5/18 pounds, because Karen divided 5/6 pounds amon 3 people.

5 0

3 years ago