Mathematics Middle School

Write -7 - (-4) as an addition problem. Then simplify the expression.

Answers

Answer 1
-7 + 4

if you subtract a negative it turns it into a positive, so just take away the negative and turn the sub into an addition sign

Related Questions

Answer 12 plzzzz‼️‼️ asap!

Answers

Create equal fractions to find the number of hours he used the health club for.

2/13=x/29.25

Then, simplify so that x is by itself.

(29.25x2)/13 = x
x= 58.5/13
x=4.5 hours
13/2 = 6.5
They charge $6.50 per hour
29.25/6.50 = 2925/650 = 4.5
He was in the health club for ~ 4.5 hours

hope this helps

what is the reciprocal of the fraction 3 5/6

Answers

the reciprocal is 6/23 because once you change it into a mixed number you get 23/6 then you flip it

name the property for x+y=y+x

Answers

it is the commutative property!
Commutative property is your answer

hope this helps

Elena has one and a half times as much money as ramon. together they have $225. how much money does each have? choices for ramon's amount: 80, 90, 95

Answers

e + r = 225
e = 1.5r.......1 1/2 = 1.5

1.5r + r = 225
2.5r = 225
r = 225/2.5
r = 90 <== raymon

e = 1.5r
e = 1.5(90)
e = 135 <=== elena

I need help with math.............

Answers

Greetings!

Solve using the properties of equality:
[tex]2(x+2)=4x+1-2x[/tex]
Distribute the Parenthesis.
[tex]2x+4=4x+1-2x[/tex]
Combine like terms.
[tex]2x+4=2x+1[/tex]
There are no possible solutions.

Hope this helps.
-Benjamin

I need help -3x=x-(6-2x)?

Answers

Answer:

X=1

Step-by-step explanation:

The sum of 17 and twice a number is 87. Find the number.

Answers

" the sum " means add

17 + 2x = 87
2x = 87 - 17
2x = 70
x = 70/2
x = 35 <==

The sum of three consecutive odd integers is 72 more than the smaller integer. What are the integers? plz show work.ASAP

Answers

Let the consecutive odd no. be X, Y, and Z.
Since they are consecutive,
Y = X+2 and Z = Y+2 = X+4.
  Now,
X+Y+Z = X+72 (according to question)
Substituting,
3X + 6 = 72
3X = 72 - 6 = 66
 Therefore,
X = (66/3) = 22
Y = 24
Z = 26

June is working on an addition problem and starts with 17,985. After she adds she still has 17,985. Which property of addition did June use? How do u know? please help me as fast as possible im doing this right now

Answers

u start with 17,985...u add a number and the result is still 17,985. There is only 1 way this can happen and that is if the number u added was 0.

17,985 + 0 = 17,985....this is the additive identity property...which simply states that u can add 0 to a number and it still keeps its identity.

Answer:

Additive Identity

Step-by-step explanation:

Given number: 17985

Let say June added x to this no.

The result of the addition  = 17985

Result = 17985 + x

17985 = 17985 + x

Thus, x = 0.

This means that June added "0" (zero) to the number. This is additive identity. As per this property, when additive identity is added to a number, the number remains unchanged.

alexander the great became king in 336 BB and died 13 years later. what year did he die?

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323 BC. When working before Christ the more recent the year is, the smaller the number is.
323 B.C.E. because 336- 23=324 B.C.E.

a(n+y)=10y+32 solve for y

Answers

we have

[tex]a(n+y)=10y+32[/tex]

Solve for y

[tex]a(n+y)=10y+32\\an+ay=10y+32[/tex]

Group terms that contain the variable y, and move the other terms to the opposite side of the equation

[tex]ay-10y=32-an\\ y(a-10)=32-an[/tex]

Divide by [tex](a-10)[/tex] both sides

[tex]y=\frac{(32-an)}{(a-10)}[/tex]

therefore

the answer is

[tex]y=\frac{(32-an)}{(a-10)}[/tex]

Answer:

(32-an)/(a-10)

Step-by-step explanation:

How do you write 2.2 in word form?

Answers

2.2=22/10=2+0.2=2+2/10

so it could be said as 2 and 2 tenths
two and two-tenths
 2      .          2

What is .86 divided by 5 minus .3 times .5

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The answer is 2.2 buddy
.86÷5-.3×5= -1.328 the answer is -1.328

I will give BRAINLIEST to whoever is correct.

Answers

4b/3+2 = 4-b/3

5b/3 +2 =4

5b/3 =2

5b =3*2

5b=6

b=6/5


A farmer has 25 yards of fencing to make a pig pen. He is going to use the side of the barn as one of the sides of the fence, so he only needs to fence 3 sides. What should be the dimensions of the fence in order to maximize the area?

Answers

a square gives the largest area

25 yards of fence = 25*3 = 75 feet

75/3 = 25 feet

so the dimension should be 25 feet by 25 feet

 the area would be 25^2 = 625 square feet

2 for $9. what is the unit price?

Answers

9/2
4.50

Hope this helped!
$4.50 is ur answer all u do is 9 divided by 2



How does an underestimate relate to rounding factors before estimating?

Answers

when both factors in a multiplication problem are rounded up to estimate the product, the estimate is an overestimate.

When you round up, you overestimate because now numbers are bigger than before rounding. In a similar way, when you round down, you underestimate. And, when you round down some factors and round up others, it is hard to tell whether the estimate is an overestimate or an underestimate.

how to solve -24-1/8p=3/8p?

Answers

first u divide both sides by 8

you get
 -192-p=3p

collect like terms
  -p-3p= 192

divide both sides by -4
 -4p=192


P= -48

A manufacturing company with 450 employees begins a new product line and must increase their number of employees by 18%. How many total employees does the company now have?

Answers

The answer would 531. You would add 18% more employees to the company so the answer is 531. I really hope this helped you. Have a nice day!

Please show your work with each expression. Simplify.

6a - 2b^2 a=9 b=5

4d^3 + 6e^2 - 8d ÷ 2 d=2 e=3

5r^2 ÷ 4 + 4s ÷ 3r r=4 s=9

Answers

(replace the variables) 6(9)-2(5)^2
(simplified) 54-10^2.... 54-100=-46

he new Coat and Jacket Store was ready to open. The workers put out 42 racks of men’s and boy’s coats and jackets with 16 items on each rack. They also put out 35 racks of women’s and girl’s coats with 24 items on each rack. How many coats and jackets were on the store racks? A. 42 + 16 + 35 = 93 and 93 x 24 = 2,232 coats and jackets B. 42 + 35 = 77 and 16 + 24 = 40 and 35 x 40 = 1,400 coats and jackets C. 42 x 16 = 672 and 35 x 24 = 840 and 840 + 672 = 1,512 coats and jackets D. 42 + 16 = 58 and 35 + 24 = 59 and 59 + 58 = 117 coats and jackets

Answers

42 x 16=672
35 x 24=840

672+840=1512
C. 42 x 16 = 672 and 35 x 24 = 840 and 840 + 672 = 1,512 coats and jackets

Hwong Has 39 Muffins.If each of hos Guest will Eat 2 Muffins, Hwong figures That He Can Serve Muffins To 19 Guest

Answers

That is correct because 2x19=38 which is the closest number without going over

mr. peters buys 3 1/4 pound of grapes for $4.55 what is the unit cost of the grapes

Answers

divide 3 1/4 with 4.55

Kevin wanted to know how many minutes are in 2 years.
he set up the conversion below

365 days 24 hours 1 hours
2 years *------------ * ------------ * -----------
1 years 1 day 60 minutes

1. what did Kevin do wrong

2. what can Kevin do to fix it

Answers

Part 1
Kevin did not indicate the conversions between years, days, hours, and minutes.

Part 2
The correct calculation for the number of minutes in 2 years is
[tex]2 \, years \\ = (2 \, years)*(365 \, \frac{days}{year})*(24 \, \frac{hours}{day} )*(60 \, \frac{minutes}{hour} ) \\ = 1,051,200 \, minutes[/tex]

Answer: 1,051,200 minutes

zack watches tv 3 times as much as joel. Joel watches tv 2 hours a day. how many hours a day does Zack watch tv?

Answers

Jole - 2 hours a day
Zach- 3(2) hours a day
The answer is:
6 hours a day
joel- 2 hours
zack- times 3
2x3=6.
Zack watches tv for 6hours a day

10x + 9 as a word phrase

Answers

"Ten times a number plus 9" Is the correct way to write this equation.

Suppose you used the distributive property to get the expression 12x+3y-9. With what expression could you have started?

Please help.

Answers

the answer could be 3(4x+y-3)
Before using the other methods for factoring, this is the first type of factoring you should try. Basically, you’re reversing the distributive property. What you’re doing is finding the greatest common factor for all of the terms.
Examples:

Factor 2x + 4
Greatest common factor for both of the terms is 2.
2x + 4 = 2(x + 2)

Factor 4x2 + 12
Greatest common factor for both terms is 4.
4x2 + 12 = 4(x2 + 3)

Factor 5x2 + 10x + 25
Greatest common factor for all of the terms is 5.
5x2 + 10x + 25 = 5(x2 + 2x + 5)

Find the greatest common factor for 12, 3 and -9.

After playing with the numbers around, I got 3.

3(4x + y - 3)

So, 3(4x + y - 3) is the answer.

what is the value of "x" in 16^2 = x

Answers

16^2  = 16 * 16  =256

x = 256

Bobby Hsu is an office manager at a weekly newspaper. He earns $22.50 per hour. How many hours per week does Bobby work if he earns $522.00 per week?

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about 23 hours divide $522 by $22.50

Need help on part b asap

Answers

the answer gotta be b or d

You have the first part correct. The area 36pi comes from squaring 6 to get 36.

The diameter 12 is cut in half to get the radius 6.


Add on 3 to the radius to get 3+6 = 9. The new radius is 9 which squares to 81. That's why the answer is choice D for the problem on the right.

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