how can you use a mental math and the inverse property of addition to find the sum [5.5 + (-2.3)] + (-5.5 + 2.3)?

Answers

Answer 1
Hi you can do 5-3 is two then 5-2 is three so you get 3.2 then go to the either side and do 5-3 that equaled two and then do 5-2 that is three so you 3.2 then you add both of them together to get 6.4
Answer 2

Answer: it is 0

Step-by-step explanation:

[5.5+(-2.3)] + (-5.5+2.3)

We can multiple (-5.5+2.3) by -1 so that it equals the first expression

[5.5+(-2.3)] + (-1)[5.5+(-2.3)]

Then, we change the + to -

[5.5+(-2.3)] - [5.5+(-2.3)]

since we are subtracting the same value, the answer is 0.


Related Questions

Mora preparing her pack for a hike. Her empty pack weighs 15/16 pound. She adds some water bottle that each weigh 1 1/8 pound. Now Mora's pack weighs 6 9/16 pounds. How many bottles, b, does Mora add to her pack? show your work.

Answers

Answer:

Bottles (b) = 5

Step-by-step explanation:

1. 1 1/8B + 15/16 = 6 9/16

2. 1 1/8B = 105/16 - 15/16

3. 1 1/8B = 90/16

4. (9/8) (8/9B) = 90/16 (9/8)

5. B = 10/2 = 5

The number of bottles b should be 5.

Given that,

Mora preparing her pack for a hike. Her empty pack weighs 15 by 16 pound. She adds some water bottle that each weigh 1 1 by 8 pound. Now Mora's pack weighs 6 9by 16 pounds.

Based on the above information, the calculation is as follows:

[tex]1 \frac{1}{8}B + 15\div 16 = 6 \frac{9}{16}\\\\ 1 \frac{1}{8}B = \frac{105}{16} - \frac{15}{16}\\\\1 \frac{1}{8}B = 90\div 16\\\\(9\div 8) (8\div 9B) \\\\= 90\div 16 (9\div 8)\\\\B = 10\div 2[/tex]

= 5

Learn more: brainly.com/question/16911495

What is the distance between these two points on the coordinate plane? (-7, 14) and (-7, 20)

Answers

Answer:

6

Step-by-step explanation:

20-14= 6

Please mark brainliest

Answer:

6 is the answer

Step-by-step explanation:

LIST all of the possible outcomes if you roll a fair number cube and flip a quarter at the same time (you may abbreviate T for tails and H for heads)

Answers

Answer:

12 possible outcomes

Explanation:

a fair die has 6 possible outcomes

a fair coin has 2 possible outcomes

the possible outcomes in this experiment = 2 × 6 = 12

the 6 outcomes where the coin will land on H and meet the six outcomes of the die

and the 6 outcomes where the coin will land on T and meet the six outcomes of the die

6 + 6 = 12

or

we simply multiply all the outcomes:

2 × 6 = 12

Answer:

12 possible outcomes is the answer

Step-by-step explanation:

Please help me ASAP! Thank you!

Answers

Answer:

I think it is 556.6

Step-by-step explanation:

I think this is the answer because it is the closest answer that appeared on my calculator.

Answer:

Step-by-step explanation:

Surface area is the sum of the areas of all the sides.

The bottom side(the rectangle with dimensions 11.9 and 17.4): 11.9 * 17.4 = 207.06 * 1 = 207.06(because there is only one of this shape)

The rectangular sides(dimensions 10.5 and 14): 10.5 * 14 = 147 * 2 = 294 for both sides

The triangular sides(17.4 and 7): (17.4 * 7) / 2(because it a triangle) = 60.9 * 2 = 121.8(because there are two sides)

Add these up to get your surfacce area

HEllo u have clicked on my question but theres a twist the person to get the answer right will get free brainliest and 100 points i have the answer in here somewhere first person to get it gets the brainliest ready?

Travis wants to borrow money to start a racquetball club at his school. He convinced the athletic department to loan him $2,500 to purchase equipment and rent a practice facility. Travis agreed to an interest rate of 7%, and to pay back the money at the end of the year. How much money will Travis have to pay back to the athletic department$2,500$2,750$2,675$2,425
Travis wants to borrow money to start a racquetball club at his school. He convinced the athletic department to loan him $2,500 to purchase equipment and rent a practice facility. Travis agreed to an interest rate of 7%, and to pay back the money at the end of the year. How much money will Travis have to pay back to the athletic department$2,500$2,750$2,675$2,425
Travis wants to borrow money to start a racquetball club at his school. He convinced the athletic department to loan him c2,500 to purchase equipment and rent a practice facility. Travis agreed to an interest rate of 7%, and to pay back the money at the end of the year. How much money will Travis have to pay back to the athletic department$2,500$2,750$2,675$2,425
Travis wants to borrow money to start a racquetball club at his school. He convinced the athletic department to loan him $2,500 to purchase equipment and rent a practice facility. Travis agreed to an interest rate of 7%, and to pay back the money at the end of the year. How much money will Travis have to pay back to the athletic department$2,500$2,750$2,675$2,425
Travis wants to borrow money to start a racquetball club at his school. He convinced the athletic department to loan him $2,500 to purchase equipment and rent a practice facility. Travis agreed to an interest rate of 7%, and to pay back the money at the end of the year. How much money will Travis have to pay back to the athletic department$2,500$2,750$2,675$2,425
Travis wants to borrow money to start a racquetball club at his school. He convinced the athletic department to loan him $2,500 to purchase equipment and rent a practice facility. Travis agreed to an interest rate of 7%, and to pay back the money at the end of the year. How much money will Travis have to pay back to the athletic department$2,500$2,750$2,675$2,425

Answers

Answer:

It's c because you times 2500 by .07 then add that amount to 2500.

Answer:

Hi! your answer is  

Step-by-step explanation:

$2,675 ( :

Kurt and Courtney are playing basketball. Kurt makes 2 baskets in the first game and 4 baskets in each game after that. Courtney makes 4 baskets in the first game and 2 baskets in each game after that. The table below shows the number of baskets each made in the first 4 games. Which graph shows the ordered pairs of the total number of baskets each has made after each game?

Answers

Answer:

Step-by-step explanation:

3rd graph

Sam rented a boat at $225 for 2 days. If he rents the same boat for 5 days, he has to pay a total rent of $480.

Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals.



Explain to me like I’m a dummy

Answers

Answer:1125

Step-by-step explanation:

you will take and times 225 by 5 to get the answer

pls help will give brainliest to the correct answer :)

Answers

i think 40 is correct
The answer 40 should be correct.

proportional or not propotional?

Answers

The relationship is proportional.

In the table, we see a rate of change of 5 when multiplying by the bag of screws to get the price:

2 • 5 = 10
4 • 5 = 20
7 • 5 = 35

Because all of the equations are true, we know the relationship between the number of bags of screws and the price is proportional.

Answer: proportional

Step-by-step explanation:

if you divide 10 by 2 you get 5.

since 4 times 5 is 20 and 7 times 5 is 35

the table is proportional since there is a set rate of change

A sweater is on sale for $16, which is 80% of the original price. What is the original price of the sweater?

Answers

Answer:

$20

Step-by-step explanation:

If the sweater is on-sale for $16, and it is 80 percent of its original price, then the sweater must be originally $20 because 80 percent of $20 is $16.

Hope this helps!

How many different triangles can be formed using line segments with lengths 12, 15, and 30?
A. none
]B. one
C. more than one

Answers

Answer:

None

Step-by-step explanation:

The sum of two sides must be greater than the third side.

12 + 15 < 30

Therefor no triangle can exist

Answer:

none

Step-by-step explanation:

12 + 15 is smaller than 30 therefore no trangle

In the context of this graph what do the slope and y intercept mean ?

Answers

Answer:

This is as far as i can get you.

Step-by-step explanation:

The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y axis.

What is the maximum number of 2cm cubes that can fit into a box measuring 10cm by 8cm by 5cm?

Answers

Answer: The volume of box is 6×8×10 cm^3

All of 6,8 and 10 are divisible by 2 so your cubes will fill the box, the volume of the cube is 2×2×2=8 cm^3 divide the volume of the box by 8; number of cubes fitting in the box is 6×10=60

Step-by-step explanation:All of 6,8 and 10 are divisible by 2 so your cubes will fill the box, the volume of the cube is 2×2×2=8 cm^3 divide the volume of the box by 8; number of cubes fitting in the box is 6×10=60

Answer:

50 cubes

Step-by-step explanation:

The maximum number of 2cm cubes that can fit into a box measuring 10cm by 8cm by 5cm is 50 cubes.

You can find this by dividing the total volume of the box (10 x 8 x 5 = 400 cm^3) by the volume of a single cube (2 x 2 x 2 = 8 cm^3). So 400cm^3 / 8cm^3 = 50 cubes.

Hence, The maximum number of 2cm cubes that can fit into a box measuring 10cm by 8cm by 5cm is 50 cubes.

Help me please thank you

Answers

There is nothing to help with...
there’s nothing here to go off of sorry.

Please help with the math question!!! 2

Answers

Answer:

number 1 is 12

number 2 is 18

number 3 is 30

Answer:

Die = 6 possible outcomes

Coin= 2 possible outcomes (per) coin

spinner= 3 possible outcomes

Regroup to express the number differently.
16,590= 1 ten thousand+6 thousands+5 hundreds+9 tens
16,590= 1 ten thousand+6 thousands+4 hundreds+★ tens

what does ★ equal?

Answers

i think the answer is 19 tens since u take away a hundred, which is 10 tens and 10 tens + 9 tens equals 19 tens

The question in image... again, please help

Answers

Answer: it looks like D

Step-by-step explanatio

v = -2 and w = -1. Which one of the expressions is positive?

Answers

Answer:

w=-1

Step-by-step explanation:

Answer: None of them. The're both negative.

Part I-Selected Response
1. CJ wrote several pairs of values that he
thought were equivalent. Which of his
equations are correct? Circle all that apply.
A. 1.25-125%. B. 0.03-30%
C. 0.001 - 1% D.
E. -50%

2. What is 30% of 60?
A. 18
B. 20
C. 24
D. 30
B. 0.03-30%
D. -60%
F.
D. 200

3. Six is 3% of what number?
A. 0.18
B. 2
C. 18

4. What percent of 40 is 60?
A. 20%
B. 50%
C. 67%
D. 150%


5. What is the percent decrease from 20 to
16?
A. 4%
B. 20%
C. 25%
D. 125%

6. Last year, 15 dogs entered the local dog
show. This year, 20 entered. What is the
percent increase?
A. 20%
B. 25%
C. 33%
D. 75%

7. Roe bought a video game in Miami. The
game was $30. Miami has a 7% sales tax.
How much money did Roe pay for the video
game including sales tax?
A. $32.10
B. $33.50
C. $37.00
D. $51.00

8.Lia bought a new jacket. The original price
of the jacket was $48 but it was on sale for
15% off. For numbers 8a-8d, determine
whether each statement about Lia's
purchase is true or false.
8a. Lia paid more than $48
for the jacket.
8b. The discount was $7.20.
8c. Lia paid $40.80 for the
jacket.
8d. Lia paid $55.20 for the
jacket.
8a. TRUE FALSE
8b. TRUE FALSE
8c. TRUE FALSE
8d. TRUE FALSE

Answers

1. A

2. A, 18

3. 200

4. D

5. B

6. B

7. A

8a. False
8b. True
8c. True
8d. False

1) A
2)A , 18
3)200
4)D
5)B
6)B
7)A
8a)f
8b)t
8c)t
8d)f

Brenda is a local florist and is determined to have the best roses at this year’s competition. She is trying to figure out a way to to grow the most fragrant roses around. She is going to increase the amount of nitrogen in the soil to see if it has any effect on the fragrance strength of her roses.
Identify the IV:
Identify the DV:
What type of graph should she use?

Answers

Answer:

I d k

Step-by-step explanation:

i don't know

LOL

The independent variable is the amount of nitrogen.The dependent variable is the fragrance strength.She should use a straight line graph.What is an experiment?

We have to know that the essence of carrying out an experiment is that we could be able to play on the variables that are in the problem. As such, as we vary the independent variable there would be a change in the dependent variable.

For the experiment that we have here, we know that Brenda is going to increase the amount of nitrogen in the soil to see if it has any effect on the fragrance strength of her roses.

Learn more about experiment:https://brainly.com/question/30055326

#SPJ1

Find the value of each variable.
HELP ME AND YOU GET 100 BRAINLEIST

Answers

576

Step-by-step explanation:

36 times 16 is 576

that probably didn't answer the question tho

Answer:

a = 3

b and c = 144

Step-by-step explanation:

since vertical angles congruent

12a = 36

a = 3

A line is 180 degrees so 12a = 36

180-36 = b and c

since vertical angles are congruent

b and c = 144

I really need help with this question!!!!

Answers

Answer:

3) 7853.98

4) Probably around 4

Step-by-step explanation:

Hope this helps

Pls mark me brainliest

hink About the Process A right rectangular prism has length
​, width
​, and height
. You use cubes with fractional edge length
to find the volume. How many cubes are there for each of the​ length, width, and height of the​ prism? Find the volume.
How many cubes are there for each of the​ length, width, and height of the​ prism?
The length has
nothing ​cubes, the width has
nothing ​cubes, and the height has
nothing cubes.

Answers

Answer:

The length has 3 cubes

The width has 7 cubes

The height has 5 cubes

Step-by-step explanation:

Given

[tex]Length = 1\frac{1}{2}yd[/tex]

[tex]Width = 3\frac{1}{2}yd[/tex]

[tex]Height = 2\frac{1}{2}yd[/tex]

[tex]l = \frac{1}{2}yd[/tex] --- edge length

Required

Determine the number of cubes in each dimension

To do this, we divide the dimension by the edge length

For the length, we have:

[tex]n_{Length} = \frac{Length}{l}[/tex]

[tex]n_{Length} = \frac{1\frac{1}{2}}{\frac{1}{2}}[/tex]

Express as:

[tex]n_{Length} = 1\frac{1}{2} \div \frac{1}{2}[/tex]

Change to product

[tex]n_{Length} = 1\frac{1}{2} * \frac{2}{1}[/tex]

[tex]n_{Length} = 1\frac{1}{2} * 2[/tex]

[tex]n_{Length} = 3[/tex]

3 cubes in the length

For the width, we have:

[tex]n_{Width} = \frac{Width}{l}[/tex]

[tex]n_{Width} = \frac{3\frac{1}{2}}{\frac{1}{2}}[/tex]

Express as:

[tex]n_{Width} = 3\frac{1}{2} \div \frac{1}{2}[/tex]

Change to product

[tex]n_{Width} = 3\frac{1}{2} * \frac{2}{1}[/tex]

[tex]n_{Width} = 3\frac{1}{2} * 2[/tex]

[tex]n_{Width} = 7[/tex]

7 cubes in the width

For the height, we have:

[tex]n_{Height} = \frac{Height}{l}[/tex]

[tex]n_{Height} = \frac{2\frac{1}{2}}{\frac{1}{2}}[/tex]

Express as:

[tex]n_{Height} = 2\frac{1}{2} \div \frac{1}{2}[/tex]

Change to product

[tex]n_{Height} = 2\frac{1}{2} * \frac{2}{1}[/tex]

[tex]n_{Height} = 2\frac{1}{2} * 2[/tex]

[tex]n_{Height} = 5[/tex]

7 cubes in the height

Find the surface area of the triangular prism.

Answers

I think it's 462.99, rounded it's 463

I’m pretty sure it is 406.56 but I’m not sure I just wanted to let you know :)

What is the volume of the following figure?
A. 40
B. 50
C. 30
D. 20

Answers

Answer:

C

Step-by-step explanation:

L x w x h

2 x 3 x 5 = 30

hoped this helped :)

First off, the formula for volume is :
length x width x height
Or
base x height

Assuming the each unit is 1, there is 2 rows of 3, or 6 units as the base.

There are 5 units up, representing height.

So, you multiply 6 x 5, and get 30.

Therefore, your answer should be C!

I hope this helps!! ~(^v^)~

please help giving brainliest

Answers

40+90+72 is ur answer , just add it up
The answer would be 202

Please help ASAP .....

Answers

Answer:

(n-2)2 is in the formula (a-b)2 = a2- 2ab + b2

correct it by writing (n-2)2 = (n2 - 2(n)(2) + 2 raise 2)

Answer:

-2 * -2 = 4, but Maryam put -4 instead.

What is the mean and median?

Answers

Answer:

Step-by-step explanation:

Mean roughly means the average of all the results. Add all of them up and divide it by the number of items there are. Median, basically means, you line them up from low to high numerically and the middle number.

Mean is 9
Median is 6

What is the area of the object (PROVIDE NUMBER ONLY) *

Answers

Answer:

Is it 63 inches squared?

Step-by-step explanation:

A=1/2bh

A=1/2(18)(7)

A=63 in squared

Please tell me if this is right if not I am so sorry that I told you the wrong answer because I know how it feels

Answer:

82.95

Step-by-step explanation:

7 ⋅ 18 = 126

126 ÷ 2 = 63

a^2 + b^2 = c^2

b = √9^2 - 7^2

b = √81 - 49

b = √32

b = 5.7 (Rounded to nearest tenth)

7 ⋅ 5.7 = 39.9

39.9 ÷ 2 = 19.95

63 + 19.95 = 82.95

The area of a rectangle is 96 sqaured meters with the width of 8 meters. Write an equation to find the length of the rectangle. Solve the equation to give the length of the rectanlge. Show all steps and work. NOTE: The first line of the algebraic equation does NOT have the variable isolated. The variable should be isolated ("alone") on the last line of your work.

Answers

Answer:

The length is 12 meters

Step-by-step explanation:

A=L×W

96=L×8

96/8=12

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