All categories

2 years ago

Find the lowest common denominator.

Mathematics

1 answer:

r-ruslan [8.4K]2 years ago

4 0

The LCD is $(x+2) ^{2}(x-2) ^{2}$ since $x^{2} -4$ factors into (x+2)(x-2). The idea for a LCD is to have in all the denominators what makes up each individual denominator.

You might be interested in

Jacob is a teacher. He made 75 cookies to give to his students on the first day of school. He gave 2 cookies to each student who

Lisa [10]

Answer:

See explanation

Step-by-step explanation:

Jacob has 75 cookies.

He gave 2 cookies to each student.

Complete the table:

$\begin{array}{cc}\text{Number of student arrived}&\text{Number of cookies left}\\1&75-2=73\\2&73-2=71\\3&71-2=69\\...&...\end{array}$

Let n be the number of students. After nth student arrived Jacob had left

$g(n)=75-2n$

cookies.

This is an arithmetic sequence with

$g_1=g(1)=73\\ \\d=-2$

Thus,

$g_{n}=g_{n-1}-2\\ \\g(n)=g(n-1)-2$

3 0

3 years ago

Read 2 more answers

If Margo has about 120,000 balloons to blow up for the fair, and she's already blown up 146, how many more balloons does she nee

Naddik [55]

Answer:

See explanation below

Step-by-step explanation:

Margo needs to blow up 119,854 balloons.

120,000 - 146 = 119,854

A marathon is 26 miles.

40 minutes is equivalent to 0.67 hours

(26 miles) / (0.67 hours) = 38.8 mph

7 0

2 years ago

A student has a range of values from 0.000001 to 1,000,000, but limited paper to graph these values on. How might the student be

erica [24]

Answer: The student could use large intervals (what he counts by)

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

What is the distance between (5, -1) and (5,-4)?

3241004551 [841]

Mathspapa.com ok find it there

7 0

3 years ago

On a trip, you had to change your money from dollars to British pounds. You got 560 pounds for 800 dollars. How many pounds will

leva [86]

<h2>Answer</h2>

210 pounds

<h2>Explanation </h2>

First, we are going to find the exchange rate from dollars to pounds.

We know form our problem that 800 dollars are 560 pounds. so:

$\frac{560pounds}{800dollars} =0.7$ pounds per dollar.

Next, we are going to multiply our exchange rate by the number of dollars we want to change, 300:

$300dollars*\frac{0.7pounds}{dollar} =210pounds$

We will get 210 pounds for 300 dollars

5 0

3 years ago

Read 2 more answers