Which of the following problem types require you to find the LCD? (choose ALL that apply)

multiplying rational expressions
multiplying rational expressions

dividing rationals expressions
dividing rationals expressions

adding rational expressions
adding rational expressions

subtracting rational expressions
subtracting rational expressions

solving rational equations

Answers

Answer 1

Answer:

The correct options are;

Adding rational expressions

Subtracting rational expressions

Step-by-step explanation:

When adding or subtracting rational numbers, the denominators of the  fractions representing the numbers should be equal

Therefore, when adding two or more rational expressions together, the following steps are required;

1) Looking for the Lowest Common Denominator

2) Finding the product of the quotient obtained from dividing the LCD by the denominator of a fraction and the numerator of the fraction

3) Placing the sum (or differences) of the products obtained in the above step as the numerator, while the LCD remain denominator

4) Simplifying the numerator in the above step

5) The faction so obtained, is the sum or difference of two or more rational expressions.


Related Questions

Cholesterol should be limited to at most 300 mg per day. Fast food hamburgers have high amounts of cholesterol. Two McDonald’s Quarter Pounders and three Burger King Whoppers contain a total of 395 mg of cholesterol. Three Quarter Pounders and one Whopper contain a total of 288 mg of cholesterol. Determine the cholesterol content in each hamburger.

Answers

Answer: 203.5mg and 322.5mg

Step-by-step explanation:

Let represent two serving of Mc Donald quarter pounds with = m

Let three Burger King whopper = b

given:

1). m + b = 300 + 395......equation 1.

1). m + b = 695.

And

2). 3m + b = 288.......... equation 2.

• Using Elimination method, Multiply both sides of eqn.(1) and (2)by 3. then

-3m + 3b = 2084

9m + 3b = 864

Subtract equation (1) from (2).

6m = 1221

Divide both sides by -6

m = 203.5

Substitute (m) into equation 1

3m + b = 288.

3(203.5) + b = 288.

610.5 + b = 288

b = 610.5 - 288

b = 322.5

Two servings of Mc Donald quarter pound has 203.5mg of cholesterol.

Three servings of whopper has 322.5mg of cholesterol.

PLEASE HELP ASAP DUE IN LIKE 5 MINUTES

Answers

KF = 8 units ( 16/2 = 8)
Angle DEK = 88 degrees ( 44 x 2 = 88)
Angle DFE = 90 degrees

3, +5,9,-6, what is the total score of Jesse's hand?​

Answers

Answer:

11

Step-by-step explanation:

3 + 5 = 8

8 + 9 = 17

17 - 6 = 11

Find all real square roots of 16.
If there is more than one answer, separate them with commas.
If there are none, click on "None".

Answers

4

that is the only one

45 minutes = how many hours please help me :(

Answers

Answer:

3/4

Step-by-step explanation:

-6 - (-9)
thats it i just need help with that

Answers

Answer:

the answer is three

Step-by-step explanation:

Isaiah and his children went into a grocery store and where they sell apples for $0.50 each and peaches for $1.50 each. Isaiah has $15 to spend and must buy no less than 14 apples and peaches altogether. If Isaiah decided to buy 8 apples, determine the maximum number of peaches that he could buy. If there are no possible solutions, submit an empty answer.

Answers

Answer:

8x0.50=4

15-4=9

9/1.50= 6

6 peaches

Answer:

Maximum of 6 peaches, and 8 apples

Explanation:

Given that the quantity of apples and peaches must total to 14, a total cost of $15, with a cost of $0.50 each for apples and a cost of $1.50 each for peaches, we can create a system of equations to solve for each variable.

0.5a + 1.50p = 15.

a + p = 14.

There are many methods that can be used but the easiest one that works for this problem is elimination.

Start by multiplying the top equation by 2 to get rid of the decimals.

0.5 a × 2 + 1.5 p × 2 = 15 × 2.

PLEASE HELP I NEED THE ANSWER TO THIS!!!
Which of the following expressions is in simplified form?

11/2 n + 2.9n
4w - 5
-2 + 1.4m + 0.5
9j - 3 - j

Answers

Answer: 4w - 5 is in simplified form.

Step-by-step explanation:

The other expressions have like terms that can be combined.

In the figure below, JK=8 and JL = 25. Find KL.
J
K
KL =
X 6
?

Answers

Answer:

i dont see anything maybe try uploading it again

Step-by-step explanation:

Answer:

KL = 17

Step-by-step explanation:

JK = 8

JL = 25

find KL

JK + KL = JK

8 + KL = 25

KL = 25 - 8

KL = 17

i need to find the value of x

Answers

Answer:

x = [tex]\sqrt{21}[/tex]

Step-by-step explanation:

AC² = AB² + BC²

BC² = 3² + x² = 9 + x²

AB² = 7² + x² = 49 + x²

But AC² = (7 + 3)² = 100

∴ 100 = 49 + x² + 9 + x²

2x² + 58 = 100

x² = 50 - 29 = 21

x = [tex]\sqrt{21}[/tex]

Answer: the answer is the square root of 21.

Step-by-step explanation:

What I did was I just multiplied 7 times 3 and got 21 and that was the answer.

1. A store had apples on sale for $1.20 a pound.
Jimmy spent $5.28 on apples.
How many pounds did did he buy?

Answers

Answer:

4.4 pounds

Step-by-step explanation:

$5.28/$1.2 which is 4.4 pounds

Hope this helps plz mark brainliest if correct :D

Answer:

He bought 4.4 Pounds

Step-by-step explanation:

5.28/1.20= 4.4

i need those 2 questionssss

Answers

Answer:

48-3

Step-by-step explanation:

For first question:

Plug in the value of x: y = 12(4)12(4) = 12 × 4 = 48So, y = 48

For second question:

Plug in the value of x: y = 2(2) - 7Simplify: 4 - 74 - 7 = -3So, y = -3

I hope this helps!

Guys Please help
This is math

Answers

Answer:

9

Step-by-step explanation: replace x with 3 then do 6+ 3

Answer:

9

Step-by-step explanation:

you replace the x with a 3 and you get 6+3 which is 9

4 times 1/3 (fraction form) will give brainlest

Answers

Answer:

4/3

Step-by-step explanation:

I used a site and my calculator

4 times 1/3 in fraction form is 4/3.

To multiply a whole number by a fraction, we multiply the whole number by the numerator of the fraction and keep the denominator the same.

In this case, we want to multiply 4 by 1/3:

4 × (1/3)

= (4 × 1) / 3

= 4/3

Therefore, 4 times 1/3 in fraction form is 4/3.

To learn more on Fractions click:

https://brainly.com/question/10354322

#SPJ6

-4 + 4d + 17 = 33
D = ?

Answers

Answer:

3?

Step-by-step explanation:

I think it is 3, because...

33 - 17 = 16

16 - 4 = 12

12/4 = 3

???

2 + 8x when x = -2 please anwserrrrrrreer

Answers

Answer:

answer is -14

Step-by-step explanation:

2+8x

2+8(-2)

2-16

-14

Answer:

-14

Step-by-step explanation:

8 x -2 = -16

2 + -16 = -14

The midpoint of XY is point M (-12,5) if the coordinates of x are (3,-3) what are the coordinates pf y

Answers

Answer:

The midpoint of XY is point

M(�12, 5). If the coordinates

of X are (3, �3), what are the

coordinates of Y ?

----

Each coordinate of the midpoint is the average

of the corresponding endpoint coordinate.

----

Solve:

Let the coordinates of Y be (x,y)

---

(3+x)/2 = -12

3+x = -24

x = -27

----

(-3+y)/2= 5

-3+y=10

y = 13

---

Coordinates Y: (-27,13)

==========================

Cheers,

Stan H.

Will give brainliest give the answer and steps
Pls help will give brainliest only if it is a proper answer
Solve the equation for the indicated variable
3. 3m - 7n = p for m

Answers

Answer:

m = (p+7n)/3

Step-by-step explanation:

3m-7n = p

3m = p+7n

m = (p+7n)/3

Alex bought 8 postcards in 4 days. At this rate, how many postcards would he have after 10 days?

18
80
20
40

Answers

Answer:

20

Step-by-step explanation:

Answer:

80

Step-by-step explanation:

Which equation represents exponential decay?

Answers

Answer:
The Answer is: B.
Step-by-step explanation:
The form of the equation is:
f(x) = ab^x
When b is greater than 0 and less than 1, the function is an Exponential Decay Function.
B. is f(x) = (.08)^x
In this case, a = 1

Write an equation of a line, in slope intercept form, from the information given in the
graph.
th

Answers

Answer:

y+?=mx+b

Step-by-step explanation:

If Chris runs 6 miles each hour, how far will he run in 5 hours?

A. 30 miles
B. 35 miles
C. 11 miles
D. 36 miles

Answers

Answer:

Step-by-step explanation:

6 miles an hour. 5 hours total. 6 times 5 is 30. A

Answer:

a

Step-by-step explanation:

6miles × 5 hours making 30miles

may someone please tell me the answer

Answers

The third one is the correct answer

Im so confused, how do i get the variance with just the standard deviation

Answers

Answer:

To figure out the variance, divide the sum, 82.5, by N-1, which is the sample size (in this case 10) minus 1. The result is a variance of 82.5/9 = 9.17. Standard deviation is the square root of the variance so that the standard deviation would be about 3.03.

hope this helps!

I need help and fast what is 6/2(1+2)?

Answers

Answer:  the  answer  is  9

Step-by-step explanation:

Answer:

6÷2×3=3×3=9

Step-by-step explanation:

6÷2×3

3×3

9

QUESTION 6 of 10: A stadium brought in an average revenue of $11,000 per night for a professional sports tournament. Total receipts for the
period of time the tournament took place was $132,000. This means the tournament took place throughout how many days?
ОООО
a) 5
b) 7
c) 12
d) 14

Answers

Answer:

12

Step-by-step explanation:

divide 132,000 by 11,000

Answer:

c= 12

Step-by-step explanation:

Quick I need help on this, please


The screenshot below ( Will Mark As Brainlliest )

Answers

Answer:

Rate of change/slope: 35

Miles at 10 hours: 350

Step-by-step explanation:

We can find the rate of change or the slope by using the slope formula below:

m = (y2-y1)/(x2-x1) where m is the slope

To find the slope, we can choose any two points from the table. I will choose (2,70) and (4,140)

m = (140-70)/(4-2)

m = 70/2

m = 35

The rate of change is 35 miles per hour

To find the miles at 10 hours, we can use the equation y = mx + b which is the equation of the line in slope intercept form. However, we will need to find the value of b. To do that, we can plug in any point from the table to find the value of b. I'll choose (2,70).

y = mx + b

70 = 35(2) + b

70 = 70 + b

b = 0

So the equation of the line would be y = 35x. Using this equation, we can find the number of miles at 10 hours:

y = 35(10)

y = 350

The number of miles at 10 hours is 350 miles

Evaluate 2x+6y when x=−45 and y=13. Write your answer as a fraction or mixed number in simplest form.
The value of the expression is

Answers

Answer:

2x+6y

-8/5 + 6/3

-24/15 + 30/15 = -6/15 = -2/3

Hope this help's plz Mark brainliest plz plz :)

Can someone help me please

Answers

Answer:

C is your answer

Step-by-step explanation:

So when you are looking at problems like these, the amount of red lines will match on the triangles when that side is congruent. For instance, SQ and YW both have 3 lines, so they are congruent. Its the same with angles. If they have the same amount of arches they are also congruent.

A figure rests entirely in Quadrant 4. It is rotated 270° counterclockwise about the origin. In which quadrant does its resulting image lie?

Answers

Answer:

It will lie in quadrant 3

Step-by-step explanation:

Here, we want to know where the resulting image will lie after the rotation

After the rotation, it is expected that the resulting image will lie in quadrant 3

First 90 to quadrant 1

second 90 to quadrant 2

Third 90 to quadrant 3

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