how do you decide which rational number operations to use to solve the problems?

Answers

Answer 1

Answer:

The process of "choosing the operation" involves deciding which mathematical operation (addition, subtraction, multiplication, or division) or combination of operations will be useful in solving a word problem.

Step-by-step explanation:


Related Questions

Evaluate the function.

Answers

-87 is the correct answer

3. The equation y = 19x describes the amount of money Jeff earns, where x is the number of hours he works and y is the amount of money he earns.
The table shows the amount of money Carl earns for different numbers of hours worked.

(a) How much money does Jeff earn per hour? Show your work on how you found the constant of proportionality.
(b) How much money does Carl earn per hour? Show your work on how you found the constant of proportionality.
(c) Who earns more per hour? Justify your answer by comparing the two. Please use complete sentences.
(d) Draw a graph that represents Carl’s earnings over time in hours. Remember to label the axes with the real world quantities that x and y represent.
( please add a graph!! )

Answers

#1

[tex]\\ \sf\longmapsto y=19x[/tex]

Per hour means x=1

[tex]\\ \sf\longmapsto y=19(1)=\$19[/tex]

#2

Carl earns in 3hours=45

He earns per hour=

[tex]\\ \sf\longmapsto \dfrac{45}{3}=15\$[/tex]

#3.

Jeff earns more per hour .

As

19$>15$

#4

Graph attached

find three consecutive even integers whose sum 72

Answers

22, 24, 26

Step-by-step explanation:

2n - 2 + 2n + 2n + 2 = 72

6n = 72

n = 72/6

n = 12

∴ so three consecutive even integers whose sum is 72 :

2n - 2

= 2(12) - 2

= 24 - 2

= 22

2n

= 2(12)

= 24

2n + 2

= 2(12) + 2

= 24 + 2

= 26

verification

22 + 24 + 26

= 46 + 26

= 72 ✓✓

What is the answer tho this problem 315+1.4x

Answers

Answer:

316.4     in the calculator it came out like this

Step-by-step explanation:

Write an equation then solve It costs $4 to enter the fair. Each ride cost $2.50 You have $21.50 How many rides can you go on

Answers

Answer:

21.50-4-2.50*6

Step-by-step explanation:

you can get on 6 rides

b. Create an equation and sketch a graph that:
• has a minimum,
• is discrete, and
• is a linear absolute value function.

Answers

Answer:

Step-by-step explanation:

Yes.

Answer:

is a linear absolute value function

How many liters of a 50% acid solution must be mixed with a 30% acid solution to get 180 L of a 40% acid solution?

Answers

Answer:

ninety liters

Step-by-step explanation:

Ninety liters of the 50% acid solution have to be mixed with 90 liters of the 30% solution to yield 180 liters of 40% solution.

find the value of a + 1a​

Answers

Answer:

2a

Step-by-step explanation:

a+1a is the same as a+a=2a

Y- -7= -1(x-1)
What is this written in slope intercept form

Answers

Answer:

Y= - x - 6

Step-by-step explanation:

I don't know this question will u help

Answers

Answer:

Step-by-step explanation:

It is one

Answer:

f(x)=(2/3)x+(4/3)

Step-by-step explanation:

find gradient,m

(4-2)/4-1)=2/3

m=2/3

find y intercept

(4-c)/(4-0)

c=4/3

y=mx+c

f(x)=(2x3)x+(4/3)

Someone help and we can play warzone

Answers

A is the correct one because 2.68 is less than 2.75. I hope this helps and could I get brainliest please?

is 9:2 equivalent to 18:4

Answers

Answer:

That is true

Step-by-step explanation:

9:2 = 18:4

9x2=18

2x2=4

Thus, this answer is true.

Answer:

Yes, because if you simplify 18:4, it would simplify to 9/2. Both ratios are equivalent.

Step-by-step explanation:

Planes T and X are parallel. Plane T contains like a. plane x contains line b

Answers

Answer:

c lines

Step-by-step explanation:

click on the file <3 please give answers please and thank you!! (:​

Answers

Answer:

Step-by-step explanation:

1. 49

2. -7

3. 29/32

2. On the graph below you will find two different triangles, and three points identified along the line.
(a) Identify the coordinates of Point A, B, & C? Explain.
(b) Does each triangle have the same change in x-values? Explain.
(c) Does each triangle have the same change in y-values? Explain.
(d) Does each triangle have the same ratio of change in y-values over change in x-values? Explain.

Answers

#a

Co-ordinates are

A(0,0)B(3,3)C(9,6)

#b

No,Both triangles are congruent not same.

#c

No! Both triangles are not same

#d

Yes ratio is same as they are congruent

Answer:

Question A:

A.) (0,0)

B.) (3,3)

C.) (9,6)

Question B:

No, both triangles are congruent, not the same change in x-values.

Question C:

No, both triangles do not have are not the same change in y-values.

Question D:

Yes, their ratios of change are the same.

NEEDS TO BE CORRECT PLZ HELP

Answers

C

Step-by-step explanation:

Linear pair

it's hope it helpful to you

Answer:

c

Step-by-step explanation:

its a pair

the circumcenter of a triangle is equidistant from the

Answers

Answer:

The circumcenter of a triangle is a point that is equidistant from all three vertices. The circumscribed circle is a circle whose center is the circumcenter and whose circumference passes through all three vertices.

Step-by-step explanation:

We can conclude that the circumcenter of a triangle is equidistant from the three vertices of the triangle.

What is the Circumcenter of a Triangle?

The circumcenter of a triangle can be said to be a point where all three perpendicular bisectors of the sides of the triangle intersect. At this point, all three vertices of the triangle are equidistant.

This means that, each vertices are far from the circumcenter at equal distance.

Therefore, we can conclude that the circumcenter of a triangle is equidistant from the three vertices of the triangle.

Learn more about the circumcenter on:

https://brainly.com/question/21299234

Graph 1.7 on a number line

Answers

Answer:

Step-by-step explanation:

1.7 lies between 1 and 2.

13. A manager is comparing the drive-through service times for two fast-food restaurants, and the following results (in seconds) were obtained. Find the range, variance, and standard deviation for each of the two samples, then
compare the two sets of results
Restaurant A 120 123 153 128 124 118 154 110

Restaurant B 115 126 147 156 118 110 145 137
Restaurant A: 44 sec; 298.34 sec?; 17.27 sec
Restaurant B: 46 sec; 285.64 sec2; 16.90 sec
There is more variation in the times for restaurant A.
Restaurant A: 44 sec; 260.79 sec?; 16.15 sec
Restaurant B: 46 sec; 285.64 sec2; 16.90 sec
There is more variation in the times for restaurant B.
Restaurant A: 44 sec; 260.79 sec2; 16.15 sec
Restaurant B: 46 sec; 245.64 sec?; 15.67 sec
There is more variation in the times for restaurant A.
Restaurant A: 46 sec; 260.79 sec2; 16.15 sec
Restaurant B: 44 sec; 285.64 sec2; 16.90 sec
There is more variation in the times for restaurant B.

Answers

Answer:

The answer is A.

Step-by-step explanation:

Finn is walking on a treadmill at a constant pace for 30 minutes. She has programmed the treadmill for a 2-mile walk. The display counts backward to show the distance remaining. Enter and graph the equation that gives the distance f(x) left in miles as a function of the number x of minutes she has been walking. Then, find and compete the interpretation of the x- and y-intercepts. The equation is f(x) =

Answers

30*2=15miles per min. x*y=d.

Answer:

The equation is

[tex]f(x) = - \frac{2}{30} x + 2[/tex]

Step-by-step explanation:

since the function is

[tex]f(x) = - \frac{2}{30} x + 2[/tex]

The y-intercept is 2 and the x-intercept is 30.

since the treadmill is counting down the slope of the function would be negative. she set the treadmill for 2 minute walk so at 0 minutes she has 2 minutes left. as the treadmill counts down at the 30-minute mark she will have zero minutes left.

Need answers for 21 and 22 need it quick

Answers

Answer:

21.) 442 [Area = [tex]13*34=442[/tex]]

22.) The numbers are 37, 39 and 41.

23.) Absolute Value Inequality for x = [tex]-1,-\frac{5}{9}[/tex]

24.) Absolute Value Inequality for n = No Solution

Step-by-step explanation:

I did 23 and 24 cuz why not.

can someone tell me what to write please

Answers

Answer: 3.5 years

Step-by-step explanation:  Let A be the salaries earned from company A for x years and B for company B for the same years.

A = 31000 + n*3000

B = 38000 + n*1000

To find the case where A = b, set them to each other and solve for n, the number of years.

31000 + n*3000 = 38000 + n*1000

2000n = 7000

n = (7000/2000) = 3.5 years.

A B

0 31000 38000

1 34000 39000

2 37000 40000

3 40000 41000

4 43000 42000

5 46000 43000

6 49000 44000

7 52000 45000

Lowest term of 4 11/12

Answers

Answer:

its already at its lowest. you can write it as a decimal 0.916667, but this fraction is already at its lowest.

Distribute: -6(3x – 4) a-18x + 10 b-18x + 24 c-18x - 4 c-18x - 24​

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\text{The DISTRIBUTIVE PROPERTY formula is}\downarrow\\\large\textsf{a(b + c)}\\\large\textsf{= a(b) + a(c)}\\\large\textsf{= ab + ac}[/tex]

[tex]\large\text{Now that we have the formula, we can solve for your question/answer.}[/tex]

[tex]\large\text{YOUR EQUATION: \underline{\underline{\textsf{-6(3x - 4)}}}}}\\\\\large\textsf{= -6(3x) - 6(-4)}\\\large\textsf{= -6(3x) + 6(4)}\\\large\textsf{= -18x + 24}\\\huge\boxed{\rm{Therefore, your\ answer\ is: \mathsf{-18x + 24}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Which list is in order from least to greatest? A. 29, 15−−√, π, 4.1 B. 29, π, 15−−√, 4.1 C. 4.1, 15−−√, π, 29 D. 4.1, π, 15−−√, 29

Answers

Answer:

From least to greatest;

[tex]\pi \:, \sqrt{15} , \: 4.1 \: ,29[/tex]

Step-by-step explanation:

[tex]\pi = 3.14 \\ \sqrt{15} = 3.87 \\ 4.1 = 4.1 \\ 29 = 29[/tex]

I hope I helped you^_^

Solve:

e + 13.2 = 289.47

Answers

Answer:

Evaluate.

15.91828182 = 289.47

You have a 20-ounce bottle of juice. You pour out 1/4 of the bottle to share with a friend. If you pour out 3 ounces for yourself, what fraction of the 20 ounces will be left in the bottle?

Answers

1/4 of 20 = 5
5 + 3 = 8

So you have 12/20
Simplified = 6/10 = 3/5

Find the slope of the line.

Answers

Answer:

The slope is y = x

Step-by-step explanation:

You can find the slope by using the rise over run method with two points.Let's take (1,1) and (2,2). From the first point to the second point, (1,1) goes up one unit and to the right one unit.So the rise over run is 1/1, or 1, which means the slope is 1.

Answer:

m = 1x

Step-by-step explanation:

This is the easiest slope you'll ever have to calculate - if you even need to as it's self explanatory looking at it! Slope = rise/run, thus slope = 1/1 = 1.

WORTH 50 POINTS HELP ASAP WILL GIVE BRAINLIEST!
The price of a new pair of shoes is $52.00. If you order them directly from the company on the internet, you can save money and the price is only $42.64. What is the percent change?
18% decrease
22% decrease
18% increase
22% increase

Answers

18% decrease

Hope this helped you-have a good day bro cya)

Answer:

The percent change is an 18% decrease.

Step-by-step explanation:

A 1 pound bag of sunflower seeds provides 96 grams of protein

Answers

Well what’s the question lol-
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