How do you decide which rational number operations to use to solve problems.

Answers

Answer 1

Answer:

Like real numbers, the arithmetic operations, such as addition, subtraction, multiplication, and division are applicable to the rational numbers.


Related Questions

Please help me with this

Answers

Answer:

A

Step-by-step explanation:

4a I do not understand the process

Answers

Answer:

9/40

Step-by-step explanation:

He needs 5/8, he already has 2/5, so still needed is 5/8-2/5.

To add or subtract fractions, the denominators must be equal.

Simplest approach is to multiply them. 8 times 5 is 40, so 40 is the new denominator we need for both fractions.

So first we convert 5/8 to 25/40.

Then we convert 2/5 to 16/40.

Now we can subtract them:

25/40 - 16/40 = 9/40.

9/40 cannot be simplified so this is the final answer.

There are some basic rules you need to know to work with fractions. If above work is too fast, comment below for deeper explanation.

The answer is 9/40.

All you need to do is subtract 5/8 - 2/5 and to do that, you would need a common denominator. So just,

5 2
— —
8 5

Multiply the two bottoms to get 40 and do the same thing with the top that you did with the bottom so....

5 x 5 = 25
— —
8 x 5 = 40

2 x 8 = 16
— —
5 x 8 = 40

Subtract 25 - 16 = 9 and keep the denominator the same so 9/40 is your answer.

PLEASE HELP ME............THANKS

Answers

Answer:

i think it's c, I could be wrong djxndnxmmx

Answer:

{2,4,9,16}

Step-by-step explanation:

Range are the y values, which are on the right.

mark walked 21,129 feet in one hour. at that speed, how many miles will he walk in 2 hours

Answers

so a mile has 5280 feet.

21,129/5280= 4 mph

multiply

4 x 2 = 8 miles in 2 hours

Answer: 23.129

Step-by-step explanation:

Find the value of x in the triangle shown below

Chose 1 answer

A. x = 2

B. x = 5

C. x = square root of 5

D. x = square root of 17

Answers

Answer:d

Step-by-step explanation:

Answer:

i think d

Step-by-step explanation:

it seems right

What is the slope of the line that passes through the points (4, 5) and (12, 7)?

Answers

Answer:

1/4

Step-by-step explanation:

To find slope, we use the formula rise over run (y2-y1 over x2-x1)

So first, our y's: 7-5=2

And our x's: 12-4=8

2/8 simplifies to 1/4

Whats the answer to 4x-5=2-x asap

Answers

Answer:

x=1.4

Step-by-step explanation:

1.4

Put the x’s on one side and the rest on the other then solve for x

So...

4x + x = 2 + 5

5x = 7

5x/5 = 7/5

X= 1.4

Note: when switching sides the sign’s
(+ and -) get switched. A positive sign becomes negative and vice versa

IS THIS CORRECT?

A 2 fl oz bottle of orange juice costs $8, and a 4 fl oz bottle of orange juice costs $12. Which is a better buy?

ANSWER= 4 fl oz bottle of orange juice that costs $12 is the better buy.

Answers

Answer:
Yes
Explanation:

Answer:

yes 4fl oz bottle of orange juice that costs $12 dollars is better to buy

Step-by-step explanation:

2 bottles of orange juice=8$

if you split 8$, you get 4$ that means each bottles of orange juice is 4$

so if you get 4 bottles of orange juice it is 4$x4$= 16$ The question says that 4 bottles cost 12$ its supposed to be 16$. So the 4 fl oz bottle of orange juice that costs 12$ dollars is better to buy.

1 bottle=4$               2x4=8$ (the first equation)    

1bottle=4$                4x4=16 (the second equation)   But the question says we got the bottle of orange juice for 12$ its supposed to be 16$ that is a huge discount. so yes the answer is correct.      

Please help me solve these problems! I'll give you all my brain points. IM DESPERATE!!!
:-;

Answers

Answer: kg

Step-by-step explanation:

Find the domain and range please

Answers

Answer:

-2 is the domain

2 is the range.

DESPERATE WILL GIVE BRAINLIST AND THANKS
Graph y= –12x–6 .

(PLEASE SHOW IT GRAPHED FOR ME)

Answers

Answer:

Here it is!

Step-by-step explanation:

I graphed it. The second one is just to show the points.

The points are (0,-6) and (-1/2,0)

Brainly pls!

You and your friend are in a canoe race. Your friend is a half mile in front of you and paddling 3 miles per hour. You are paddling 3.4 miles per hour. You are 8.5 miles from the finish line. How long will it take to catch up to your friend?

Answers

Answer:

To catch your friend you have to paddle for 1.25 hours

Step-by-step explanation:

Your friend is 0.5 mile in front of you and paddling 3 miles per hour. You are paddling 3.4 miles per hour.

Since the speed is the relationship between the space traveled by an object and the time used for it, then the distance is defined as:

distance= speed*time

Being x the time it takes to reach your friend, then your friend's position will be:

3miles per hour*x + 0.5 (since your friend  is 0.5 mile in front of you)

while your position is:

3.4 miles per hour*x

When you reach your friend the position of both should be the same. So:

3*x + 0.5= 3.4*x

Solving:

0.5= 3.4*x - 3*x

0.5= 0.4*x

0.5 ÷0.4= x

1.25= x

This means that to catch your friend you have to paddle for 1.25 hours

Use numerals instead of words. 5 less than a number is equivalent to 1 more than three times the number. The number is __ ?​

Answers

Answer:

byeeeeeeeeeeeeeeeeeeeeee

Answer:

t uzi TV CRT currently

Fitzpatrick

What is the b value of the equation
y= -4x - 10?

Answers

Answer: -10

Step-by-step explanation: In slope-intercept form, the formula is y = mx + b with m = slope and b = y-intercept. In the expression, the "b" is -10. Therefore, the b value of this equation is -10.

What is c?



1.51=c10

c = can someone explain I'm a little confused >

Answers

Answer:

0.151

Step-by-step explanation:

1.51=c10

we divide 10 by both sides

1.51/10 = c10/10

we cancel 10/10 and 1.51/10=0.151

so

c=0.151

tell me if u need a more clear explanation

Answer: 15 hope this help's and if not please give a bad rating

find the slope of the line parallel to the coordinates -5, 1 and -1, 2

Answers

Answer:

m = 1/2 or 0.25

Step-by-step explanation:

Brainliest Please!!

help me please, if it's right i'll mark you brainliest :D

Find the area of the parallelogram.

Answers

Answer: i think it's 64

3 (5р — 3) = 5 (p — 1)

Answers

15p - 9 = 5p - 5

Hope this helps and have a nice day!!!

(Don’t forget to mark branliest if it is right!!!)

PLEASSSEEEE HELP ME FIGURE THESE OUT ILL GIVE YOU ALL MY POINTS!!!

Answers

Answer:

LOL i don't even know

Step-by-step explanation:

Please help!!

Use Heron’s Area Formula to find the value of “x” in the triangle with the given measures. Area = 21.3
[A] x=7.6
[B] x=7
[C] x=8.7
[D] x =5.9

Answers

Answer:

the answer is B, x=7

Step-by-step explanation:

heron's area formula:

[tex] s = \frac{a + b + c}{2} [/tex]

[tex]area = \sqrt{s(s - a)(s - b)(s - c)} [/tex]

A 2-gallon jug of water costs $14.24. What is the price per quart?

Answers

Answer:

p

Step-by-step explanation:

p

Find The Angle (See Image)

Answers

Answer:

do you how many there is 5 angles if thats what ur asking

Step-by-step explanation:

what two numbers' sum=-4 and product=-2

Answers

Let a and b be the two numbers. Then

a + b = -4

a b = -2

Solve the second equation for b :

b = -2/a

Substitute this into the first equation:

a - 2/a = -4

Multiply both sides by a :

a² - 2 = -4a

Move 4a to the left side:

a² + 4a - 2 = 0

Use the quadratic formula to solve for a :

a = (-4 ± √(4² - 4(-2))) / 2

a = -2 ± √6

If a = -2 + √6, then

-2 + √6 + b = -4

b = -2 - √6

In the other case, we end up with the same numbers, but a and b are swapped.

If f(x) = 9-2 |x+2|, find f(-7).
-15
-1
1
19

Answers

Step-by-step explanation:

f(x) = 9 - 2|x + 2|

When x = 7, f(-7) = 9 - 2|(-7) + 2|

= 9 - 2|(-5)|

= 9 - 2(5)

= 9 - 10

= -1.

9514 1404 393

Answer:

  -1

Step-by-step explanation:

Put -7 where x is and do the arithmetic.

 f(-7) = 9 -2|-7+2|

  = 9 -2|-5| = 9 -2·5 = 9 -10

  f(-7) = -1

Jim is having a Halloween party for 60 children. He will give each child at least one candy bar. If each bag of candy contains 12
candy bars, which inequality gives the minimum number of bags, b, Jim will need to buy?
Yes

Answers

Answer:

5 bags of candy

Step-by-step explanation:

60/12= 5

Since there are 12 pieces of candy in each bag, 12*5= 60, so each kid can have 1 piece of candy.

Answer:

5<b

Step-by-step explanation:

help a girl out plz!! im confused

Answers

Answer:

30

Step-by-step explanation:

distribute the 5 to z and 4 --> 5z + 20

same with 5 to the 2 and -z --> 10-5z

5z + 20 + 10 - 5z = ? combind like terms

the z cancle out leaving 20 + 10 = ?

Answer:

20z-10z

Step-by-step explanation:

Distribute the 5 to both z and 4 which would make it 20z

Distribute the 5 to the 2 and -z which gives you 10z

Put them together and you get the answer

Enrique predicts that he can make additional money from sales of accessories and services for computer products sold by his store. The table at the right shows predicted percent returns for such sales. For example, if the store makes x dollars selling computer products, Enrique predicts the store will make 0.05x dollars from selling accessories. Part A In January and February of this year, the store made $2,500 from sales of accessories and services. Let x represent the amount the store will make from sales of computer products from March through December. Write an equation that represents the predicted amount y that the store will make from sales of accessories and services for the entire year. If Enrique predicts sales from accessories and services for the entire year will be $5,000, about how much money must be made from computer product sales from March through December? Explain.

Answers

Answer:

Following are the solution to this question:

Step-by-step explanation:

x was its full computer product revenue from March to December.  In january and february, the revenue towards products and services before x quantities for computer product revenues will happen between March to December is $2,500.  

Whenever x quantity is sold, then 0.05x quantity was sold for supplies and equipment.  

The sum of accessories to sell should be calculated, indeed, year-round.  

It helps us to split into two parts  

y = accessory sales in January and February + accessories sales in March and December  

Use item 2  

y = $2,500 + March to December accessories sale  

Now use sections 1 and 3  

y = $2,500 + 0.05x

The above equation rewriting gives  

y = 0.05x + $2,500 (a)  

This formula is compared with a standard y = mx+c interrupt slope  

We got a pitch of 0.05 and a pitch of $2,500.

A family is calculating the cost for one semester of college next year. Each hour of class will cost $155. A scholarship gift of $64 can be deducted from costs. If h is the number of hours taken, and c is the total cost, which equation can be used to calculate the total tuition costs for a semester?

C=89h

C=155h+64

C=155h-64

C=-155h-64

Answers

Answer:

c=155h-64

Step-by-step explanation:

you mulitply the cost of the classes by the amount of hours, then you deduct the scholarship gift(64) from the total and get your total cost of the semester

Find what x equals please

Answers

Answer:

180-(35+28)->180-63=117 and 180-117=63 then 63+36=99 and 180-99=81 so x=99°

how many solutions does the equation 2(9x-6)=18x+2 have??? Please help

Answers

Answer:

x=5.889

Step-by-step explanation:

2(9x6)=18x+2

108=18x+2

106=18x

x=106÷18

x=5.888888889

Other Questions
4. Which detail(s) from the text best supports the inference that all marriages of the late 19thcentury, even happy ones, were somewhat oppressive? Select 2 options.(1 Point)A) "She wept at once, with sudden, wild abandonment, in her sister's arms" (para. 3).B) "She was young, with a fair, calm face, whose lines bespoke repression and even a certain strength" (para8).C) "She knew that she would weep again when she saw the kind, tender hands folded in death" (para 14).D) "There would be no one to live for her during those coming years; she would live for herself" (para. 16).E) "There was a feverish triumph in her eyes, and she carried herself unwittingly like a goddess of Victory"(para. 23). ill give you a brainliest if it is right A triangle has one side that measures x, and the other two sides each measure 4 inches less than x. The perimeter is 19 inches.What is the measure of x?5392 Mrs. Jackson bought 4 gallons of juice for a party. Each gallon has 16 cups. After the party, 4 cups of juice were left over. At the party, how many cups did people drink? Show your work and complete the explanation of how you found your answer. An example of a good electrical conductor is? Micah downloads music from an online music store. He pays $1.00 for each song, but if he buys three songs he gets a fourth song for free. Does this relationship have a constant rate of change or a varying rate of change? Complete the equation of the line through (2, 1) and (5, -8). Use exact numbers. y = Please give me the correct answer HI EVERYONE ^_^Why the ureolytic bacteria produce CaCO3? HELPPPPP MEEEEE PLEASEEEEWhat is the denominator when 5/6 is multiplied by 7/8 Chase lives 1 and one half blocks west of Ellie. They draw a number line to model this situation. Because Ellie lives 1 and three fifths blocks east of school, they give her house the coordinate 1 and three fifths . Chase incorrectly claims that the coordinate of his house is 3 and one tenth . What is the correct coordinate of Chase's house? What is Chase's likely error? What important legal principle did US Supreme Court Chief Justice John Marshall pronounce in the case Marbury v. Madison, and what impact did it have on the SupremeCourt and the US legal system? Choose one of the water management concerns listed below and give an example of where this is happening. Please cite your source and change the heading of your post to show which concern you are discussing. Make sure to also show how this impacts the water cycle. a. withdrawing large quantities from streams, lakes, and aquifers.b. increasing runoff by clearing vegetation from the land.c. altering weather patterns by clearing vegetation. d. increasing flooding by disturbing natural flood controls. Although some of the Native Americans believed the Europeans caused the disease that killed half their tribe and 80% of the Europeans, de Vaca's host persuaded them not to kill what was left of the foreigners for revenge, reasoning that A. the Europeans were too sickly to sacrifice to their gods. B. if the foreigners had the power to cause the disease, so many of them wouldn't also have died. C. more Europeans might show up and seek revenge against the Native Americans. How is the Preamble of the United States Constitution similar to an essay you would write in your Language Arts class? What does it identify? In your own words Describe the techniques used to make mud bricks. PLEASE SERIOUS HELP With which of the following is Karl Marx most closely associated?A. SocialismB. CommunismC. CapitalismD. Utilitarianism A shop keeper purchased 200 bulbs for Rs.10 each. However 5 bulbs were fused and had tobe thrown away. The remaining were sold at Rs.12 each. Find the gain or loss % HELP ME, PLEASE. I REALLY NEED ITFind x:[tex]S=\frac{1}{sin2x}+\frac{1}{sin4x}+\frac{1}{sin8x}+...+\frac{1}{sin2^{n}x }[/tex] What is one of the most easiest things to draw for beginners?