Mathematics Middle School

Re-write the following problem using a different form of rational numbers. Then solve using that different form of rational numbers.

-2.25 + (-4.6)

PLEASE HELP! I AM NOT GOOD WITH RATIONAL NUBERS OR FRACTIONS!

Answers

Answer 1

Answer:

-6.85

Step-by-step explanation:

Answer 2
The answer is -6.85 hoped that help!

Related Questions

HURRY WILL MARK BRAINLIEST IF FIRST AND RIGHT.... again

Answers

17s-10+3(2s+1)
17s-10+6s+3
23s-7

How many solutions does this linear system have? y = 2x – 5 –8x – 4y = –20 one solution: (–2.5, 0) one solution: (2.5, 0) no solution infinite number of solutions

Answers

Answer: b. one solution: (2.5, 0).

Step-by-step explanation:

y = 2x - 5

-8x - 4y = -20

-8x - 4y = -20

-8x - 4 * (2x - 5) = -20

-8x - 8x + 20 = -20

20 + 20 = 16x

16x = 40

x = 40/16

x = 2.5   y = 2x - 5 = 2 * 2.5 - 5 = 5 - 5 = 0

(x, y) = (2.5, 0)

The system of equations will have a unique solution (2.5, 0)

What is system of equations?

A system of equations is a set or collection of two or more equations with the same variables. The common solutions are the intersecting points of the equations.

Given is a system of linear equations y = 2x-5 and -8x-4y = -20

y = 2x-5......(i)

-8x-4y = -20

Rearranging the equation,

8x+4y = 5

2x+y = 20

y = 20-2x.......(ii)

Solving the equation,

20-2x = 2x+5

15 = 4x

x = 2.5

Put x = 2.5 in eq(i)

y = 2(2.5)-5

y = 0

Now, determining how many solutions do this system has,

Ratios of the coefficient,

1/1, 1/4, -1

Since, 1/1 ≠ -1

Therefore, the system of the equation has only one solution.

Hence, the system of equations will have a unique solution (2.5, 0)

Learn more about system of equations, click;

https://brainly.com/question/24065247

#SPJ5

Which of the following is not part of the modern cell theory?


All living things are made of cells


All cells come from pre-existing cells


The cell is the smallest unit of life


All cells contain membrane bound organelles

Answers

Answer:

D

Step-by-step explanation:

All cells contain membrane bound organelles. I looked at all the cell theories and D was not apart of any of them.

Hope this helps!

All cells come from pre existing cells

Need helpp fastt plss will give brainliest to who is correct plss helpp
PLSSS HELPP I NEED THE ANSWER CORRECT

Answers

36 in sq, because a rectangle has even sides on both so it’s 12 + 12 + 6 + 6

Answer:

84 square cm.

Step-by-step explanation:

The area of the rectangle: 12*6=72

The area of one right triangle: 1/2(2*6)=6

Since we have two right triangles, their area combined: 6*2=12

Add 72+12= 84 square cm.

Hope this helped.

Help will give brainliest and pls show your work

Answers

Answer:

What is the question

Step-by-step explanation:

I have no idea what is the question

Lucius is making favors for his sister's wedding. If supplies for 25 favors cost $62.50, how much do supplies for 60 favors cost? $_________

Answers

it will cost 150

62.50/25 = 2.5

2.5*60 =150


Lalalalal. Its already answered. I just want points

CAN SOMEONE PLEASE HELP ME WITH THIS???!!!

Answers

Answer:

with what

Step-by-step explanation:

just fill out t he table.. you have all the i for

PLZ HELP due in 15 min( also plz SHOW WORK)
Fiona and Jamey have lunch at a bistro. The bill totals $29.75, and they leave their server a 24% tip.
How much total money do they pay?
A)$18.45
B)$29.99
C)$35.96
D)$36.89

Answers

29.75 devided by 100 times 24 = 7.14 + 29.75 = 36.89

you don't have to show work
4+(2x−7)3=−5 ?

Answers

Answer: x = 2.

Step-by-step explanation: Step 1: Simplify both sides of the equation.

4+(2x−7)(3)=−5

4+(2x)(3)+(−7)(3)=−5(Distribute)

4+6x+−21=−5

(6x)+(4+−21)=−5(Combine Like Terms)

6x+−17=−5

6x−17=−5

Step 2: Add 17 to both sides.

6x−17+17=−5+17

6x=12

Step 3: Divide both sides by 6.

6x /6  =  12 /6

x = 2.

it would be -3x+2x if you were talking about the whole question like 4+(2x-7)3=-5 it would be x=2

Please help and show your work!

Answers

its 78 because you multiply 3 and 26

Answer:78 cups

Step-by-step explanation: Multiply 26 days times the amount of cups wich is 3

A keyboard that costs $400 is marked down 10% for a sale. What is the total savings? What is the new price of the keyboard?

Answers

Answer:

The total savings is $40 and the new price is $360

Step-by-step explanation:

Multiply 400 by .10 and you get the savings, $40.

Then subtract 400 by 40 and you get the new price.

Answer:

Step-by-step explanation:

400*0.10=40

400-40 because 40 is the savings and 400 is the total price

400-40= $360 is the new price

It has 5 questions so I'm giving more points ill also mark brainliest (or what ever its called) if its not a random answer :P

Answers

Answer:

Step-by-step explanation:

id like to help but i cant see the attachment :(

1. The values for y in order are — 1, 2, 5, 7, 9
2. The values for y in order are— -11, -8, -5, -2, -1
3. There is not a consistent rate of change between x and y.
4. The line does not pass through the origin, (0,0)
5. The values for y in order are— -3, -2, -1, 0, 1

3÷ the square root of 9 - 2^3 x 3
A)-5
B)-17
C)-21
D)-23

Answers

Answer:

-23

Step-by-step explanation:

I hope it's right lol

D just use calculator lol

Zane bought 2 packages of candy bars. He had fewer than 22 candy bars. Write an inequality to find b, the number of candy bars in each
package.

Answers

2x < 22 to solve

x < 11 because 2x/2 < 22/2 = x< 11

Round 312.92 to the nearest whole number. *

Answers

yes 313 is the answer

In a survey of 1,300 people who owned a certain type of​ car, 650 said they would buy that type of car again. What percent of the people surveyed were satisfied with the​ car?

Answers

Answer:

50%

Step-by-step explanation:

Answer :
Yea it’s 50%

Three hundred vehicles are parked in a parking garage. Seventy percent of the vehicles are midsized cars. Which equation can be used to find the number of midsized cars in the parking garage?
StartFraction 300 divided by 3 Over 70 divided by 3 EndFraction = StartFraction 100 Over 23.3 EndFraction
StartFraction 100 divided by 3 Over 300 divided by 3 EndFraction = StartFraction 33 Over 100 EndFraction
StartFraction 70 times 3 Over 300 times 3 EndFraction = StartFraction 210 Over 900 EndFraction
StartFraction 70 times 3 Over 100 times 3 EndFraction = StartFraction 210 Over 300 EndFraction

Answers

Answer:

210 is the number of midsized cars

Step-by-step explanation:

Assume x is the number of midsized cars

So you can create the equation 70/100=x/300

(300*70)=100x

21000=100x

210=x

Answer:

D (ofc)

Step-by-step explanation:

Please help me I have no idea what to do.

Lin purchases 4 apples for $5. What is the number of apples per dollar?
Group of answer choices

A. 1.25 apples per dollar

B. 4/5 apples per dollar

C. 125 apples per dollar

D. 1/5 of an apple per dollar

Answers

1.25 per apple

If you divide 5 by 4 then it equal 1.25

pls help me im lost.
Use: 0, 4, 6, 11, 9, 8, 9, 1, 5, 9, 7 to construct a line plot. Describe the line plot to the best of your ability in the box below.

Answers

Answer:

Step-by-step explanation:

Line plots are diagrams that show the frequency of data on a number line. ... A box-and-whisker plot is a diagram that summarizes data by dividing it ... For Exercises 1 and 2, use the table below. 1. Make a frequency table of the data. 2. Use your ... for Math Exam. 3. 7. 10. 0. 2. 12. 18. 3. 1. 15. 10. 11. 8. 5. 9. 8. 12. 6. 8. 12 ...

what is 2/3 dived by the greatest comman facter of 4 and 8?

Answers

Answer:

about 0.166666

Step-by-step explanation:

i know that the greatest common factor of 4 and 8 is 4 so i divided it by 2/3 to get a rough estimate  

Answer:

1/6

Step-by-step explanation:

The GCF of 4 and 8 is the biggest number that can divide both and give an integer or not a decimalFactors of 4: 1, 2, 4Factors of 8: 1, 2, 4, 8 GCF = 42/3 divided by 4 is 1/6

WHAT DID LEAH DO WRONG
-5.25 = -25/100= -1/4

Answers

Answer:ask google or the wander would be 1.2

Step-by-step explanation:

The decimal is wrong

Hellllllp PLEASE ASAP
Which expression is equivalent to (18x + 9k) + (2x + 6k)?
16 x + 3 k
20 x + 15 k
20 x + 16 k
36 x + 54 k

Answers

Answer:

B. 20x + 15

Step-by-step explanation:

Get rid of the parenthesis and combine like terms: 18x + 2x and 9k + 6k

You get: 20x + 15.

Answer:

20x + 15k

Step-by-step explanation:

Please help me with my question.

Answers

Answer:

D. 2x + 50 > 68

Step-by-step explanation:

              She starts at 50 so we add that onto the continuing number off 2 multiplied by how many questions she gets correct. This is greater than 68, because she could answer a lot of questions correctly, and since this is greater, she can continue into the next round.

Which choice best represents the area of a circle with a diameter of 16 cm. Use ≈3.14
Question 4 options:

256 centimeters squared

803.84 centimeters squared

25.12 centimeters squared

200.96 centimeters squared

Answers

Answer:

it is 803.84 centimeters squared

Step-by-step explanation:

area of a circle is r^2* 3.14

=16*16*3.14

=803.84

Answer:

it is 25.12

Step-by-step explanation:

how many Solutions does this equation have
-2(5x + 6) = 2( -5x - 1)

Answers

None. Because when you solve for x, x is eliminated.

Choose the expression that correctly compares 13.261 and 13.265.
13.261 > 13.265
13.261 = 13.265
13.261 < 13.265

Answers

The answer is 13.261 > 12.265

The last one, 13.261 < 13.265.

Please Help with this question

Answers

Answer:

31+21 try that

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

Identify each value that represents the shaded
part.

Answers

Answer:

Its 4/10

Step-by-step explanation:

You get 4/10 because there are 10 rows and 10 columns. 10*10 is 100. 40 0f them are shaded so it would be 40/100. You need to simplify by dividing by 10 and you get 4/10.

Answer:

The answers are 40/100, 40/10, and 0.4

Step-by-step explanation:

because they all are equivalent to each other.

help please dk much.

Answers

Answer:

Yes, she'll have a cup left over

Step-by-step explanation:

there is 2 cups in a pint so lets first convert the 5 pints that she has into cups.

She has 10 cups.

6 x 1.5 = 9

She need 9 cups for 6 cakes so she'll have a cup of extra milk.

what the other person put correct

2 parallelograms. The pre-image is smaller than the image.
How can you tell that this transformation is a dilation?
The figure flipped upside down.
The figure changed size.
The figure completed a half turn.
The figure did not change.

Answers

The figure changed sizes

Answer:

b

Step-by-step explanation:

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