Mathematics Middle School

Given the following expression.

2 1/4 - (-3 2/5)
A. Rewrite the expression using addition.

B. Evaluate the expression.

Answers

Answer 1
In order to rewrite the expression using addition, you would change all the subtraction signs and make the second terms negative. This means that your new expression is 2 + -2 1/4 + 3 2/5. If the number is already negative, the second negative sign would make it positive. Once you've got Part A done, do 2 + -2 1/4 which would give you -1/4. Then you add -1/4 and 3 2/5 by finding common denominators, 20. -5/20 + 3 8/20 would give you 3 3/20 as your final evaluated answer.
Answer 2
Answer:1/4-(-3 2/5)1/4--3 2/51/4+3 2/50.25+3 0.43.25,0.4.

Related Questions

Which linear equation represents a proportion relationship?

A) y = x + 2

B) y = 3x + 0.2

C) y = -0.3x

D) y = 3x + 4

Answers

Answer:

C

Step-by-step explanation:

C because in proportions your multiply and divide, not add or subtract. Example: 2/3=4/5 is 2x5 and 3x4 which equals to 10=12 therefore 2/3=4/5 is not proportional. If they equaled they would be proportional.

Answer:

B. y = 2 • 0.3x

Step-by-step explanation:

i took the Exponential and Logistic Functions

Lab Assessment on edge

pls help i have to get this right

Answers

Answer:

y is times 2 x is devided by 2

Answer:

Step-by-step explanation:

well its basically just factors/ multiplied by 2. for example 2*2=4

as you can see the 2 is y and the 4 is x

and the other way around 4 is divided by 2

You might have experienced static electricity and even felt a mild shock. Think about what you observed. Then write down one or two questions about static electricity based on your observations.

PLEASE HELP!!!

Answers

Answer:

mild shock: 1. why did i feel electricity through my whole arm?

static: 2. how did i make electricity from rubbing a balloon on my hair?

Sari applied the distributive property using the greatest common factor to determine the expression that is equivalent to 84 +40. Her work is shown below.

Factors of 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40

84 + 40 = 2 (42 + 20)

What statement best describes Sari’s error?
Sari did not use correct factors for 84 in the equation.
Sari did not use correct factors for 40 in the equation.
Sari did not use two equivalent expressions in the equation.
Sari did not use the greatest common factor in the equation.

Answers

Answer: Sari did not it’s the greatest common factor in the equation

Step-by-step explanation: the GCF is 4 because it’s the highest number they have in common

i agree. sara did not use the gcf

HURRY!!!!!!!!!!!!!!!!!

Answers

Y=9.5 is the slope that it is changing at
y=7/3(x)+0.5
7/3 is the slope
0.5 is the y intercept

PLZZZ HELP ME OUT THIS DUE RIGHT NOW AND I FREAKING OUT PLEASE HELP ME P.S YOU HAVE WRITE ANSWERS FOR ALL OF THEM

Task 1 – Operations on the Number Line
(Variation of the above task)
A number line is shown below. The numbers 0 and 1are marked on the line, as are two other numbers a and b.

For each of the following expressions determine if the answer would be positive, negative, or zero. For each one PROVE HOW YOU KNOW.

1. a−1

Answer:
Explanation:








2. a−2

Answer:
Explanation:







3. b−1

Answer:
Explanation:









4. -b−b

Answer:
Explanation:









5. a−b
Answer:
Explanation:








6. ab+1
Answer:
Explanation:








7. b− a
Answer:
Explanation:








8. a a-b x b

Answer:
Explanation:

Answers

Answer:

Sorry

Step-by-step explanation:

I am not sure how to do this

Solve both please 7th grade math

Answers

A 49
B will be 106 i Belive

BRAINLIEST ANYBODY? I AM GIVING 35 POINTSSSSSSSS








Answer most be to the question on the picture

Answers

Answer:

90 degrees

Step-by-step explanation:

Hello!

So based on that we can tell it is neither a 90° or 180° angle, we can cross out A and B, And if it were C, it would stay the same. So our answer is D.

Please consider Brainliest ( as promised ), and it shouldn’t be wrong. But your alternative is C if yes.

continue to halllllllllp

Answers

Answer:

A?

Step-by-step explanation:

........................

What is the mixed number that matches this model?

Answers

3 5/7

Because there is three whole, and 5 out of 7 on one

I really need help with these. I’m not sure if the answer for number 4 is right either . Ty ✨

Answers

Answer:

Step-by-step explanation:

3,6

the answers are three and six

Mary bikes 2.5 miles in 10 minutes. At this rate, how long will it take her to finish a 25-mile race?

Answers

that would be equal to 100 minutes or 4.17 days
It would take her 100 minutes or 1 hour and 40 mins

U basically have to multiply 2.5/10 by 10 and you’ll get 25/100 meaning it’s takes 100 minutes to get to 25 miles

Plz Need Help Fast, I will mark brainilest

Answers

The answer is 3 I think

On a farm, the farmer decides to give pizza to her 15 ducks as a special treat. She orders 3 pizzas, and the total price is $23.46. What is the unit price of each pizza? (4 points)

Group of answer choices

$70.38

$5.00

$1.56

$7.82

Answers

Answer:$7.82

Step-by-step explanation:

It’s D, because $23.46 divided by 3 would be $7.82.

Can some one please help me!!!

Answers

2 because the size of the triangle doubled in size each time
The answer would be 2

brainlist
Translate the phrase into an algebraic expression.
The sum of c and 2

Answers

Answer:

2+c

Step-by-step explanation:

The sum of indicates that it is an addition problem.

Hope this helps you!!

yea what they said is the right answer

The length of a rectangle is 3 meters more than the width. The perimeter of the rectangle is 26 meters. If the width is b, which equation represents the situation? How many solutions will this equation have?
A. (b + 3) (b) = 26, which has one solution
B. 2(b + 3) + 2b = 26, which has infinitely many solutions
C. 2[(b + 3) + b] = 26, which has one solution
D. 2[(b + 3) + b] = 26, which has no solution

Answers

Answer:

C.

Step-by-step explanation:

its c because of the context of the problem..... i hope this helps

C. 2[(b+3)]+b] is the right answer to your question. hope this helped

Which expression would be easier to simplify if you used associative property to change the grouping.
A. 4+(1.2+(-0.2))
B. 85+(120+80)
C. [-40+(60)]+52
D (2+3/7)+4/7
(I'll give brainliest for the correct and most accurate answer.)

Answers

Answer:

D. (2 + 3/7) + 4/7

Step-by-step explanation:

In B and C, the numbers involved in expressions are integers.

Hence, they can be easily added or subtracted.

In D, the numbers involved in expression are fractions which are not grouped together.

They can be added but by using associative property, it becomes much more easier.

That is, grouping fractions.

Round steak costs $6.95 per pound. Sara wants to buy 9.5 pounds of round steak which she estimates will cost $54. Which statement about Sara’s estimate is true?

Answers

Answer:

depends to be exact it would cost $66

Step-by-step explanation:

It’s approx. $66.03, in conclusion Sara’s estimate is false

What does the point (0, 35) represent?

Answers

Answer:

the students read 35 pages in class to start the book

Step-by-step explanation:

that would only make sence, because 35 starts at 0, not 1, so your starting at 35, in class

it is the y-intercept so it represents the initial starting point. so your answer is d

(4^2-34)/4 6^2-12^2-14

Answers

Answer: 167173/1058 - BTW the answer is negative.
Hope it helps!!!

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.I NEED HELP WITH THIS ANSWER

there are 850 seats in the concert hall. there are 36 reserved seats. Tickets have been sold for 1/3 of the remaining seats. How many seats that were NOT reserved will be used,assuming everyone who purchased a ticket attends?

Answers

Answer:

542 2/3

Step-by-step explanation:

STEP 1. 850 - 36= 814

STEP 2. 814 divided by 3= 271 1/3

STEP 3. 814 - 271 1/3= 542 2/3

ANSWER is 542 2/3

a.Find three different ratios that are equivalent to the ratio .
b.Explain why your ratios are equivalent.

Answers

Step-by-step explanation:

a.14.6. b.when u multiply both part of ratio by the same number you make ur ratio....so we we're dealing with a ratio,if we r multiplying or(dividing)both part of it's by the same number we are creating equal ratio

Answer:

EXAMPLE: 2,3 = 4,6 = 6,9

Step-by-step explanation:

THESE ARE ALL EQUIVALENT BECAUSE... you are just multiplying each number by the same factor. 2x2=4 and 3x2=6 this gives me the next ratio of 4,6. But only multiply the first given ratio to find the next.

At a carnival booth, Cindy spent 6 minutes on each face she painted. Which equation best represents the linear relationship between x, the number of faces Cindy painted, and y, the total amount of time she spent painting the faces?

Answers

Answer: 6x = 1y

Step-by-step explanation: 6x (x = minutes) 1y (y = face)

Cindy would paint 24 faces

this is a select all please answer asap thank you

Answers

Answer:

7 (w-6)

Step-by-step explanation:

I dont know if there is any more answers

The answer to this question is -42

Help please ASAP please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

b please mark me as barinlest

Step-by-step explanation:

please help with the question

Answers

I’m pretty sure the answer is A! :)

Answer:

The answer is B

Step-by-step explanation:

Because that's how you do math.

Figure A is a scale image of Figure B. What is the value of x?
figure A 10,x
figure B 25,10

Answers

Your answer is X = 4

Select all the ratios that are equivalent to each other.
16:28
8:15
20:35
4:7
2:3

Answers

16:28, 4:7, and 20:35 are each equivalent to each other.

Jennifer jogged 4 miles
every day to train for a
race. How many miles did
she run in 8 days? Show
the constant rate of
change on the graph
included on your answer
document to prove your
answer.

Answers

Answer:

32 miles is the answer for everyday over to the right 1 on the graph it should move up 4 so a point would be(2,16) and (3,24)

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