Mathematics Middle School

Simplify each expression

1/2+(-1/4)=
-10.28+ (-5.34)=
-6/10 + 3/4=
56.27+-13.16=
4/5+3.5+12.4

Answers

Answer 1

Answer:

The bold ones

Step-by-step explanation:

1, 1/2=2/4, 2/4+(-1/4)= 1/4

2, -10.28+(-5.34)= -15.62

3,  -6/10= -12/20, 3/4= 15/20, -12/20+15/20= 3/20

4, 56.27+(-13.16)= 43.11

5, 3.5+12.4= 15.9, 4/5= 0.8, 15.9+0.8= 16.7

Fraction form:

-15.62=1562/100= 15 62/100= 15 31/50

43.11= 4311/100= 43 11/100

16.7= 167/100= 1 67/100

1/4= 25/100

3/20= 15/100

25/100=

15 62/100=

43 11/100=

1 67/100

or

1/4=

15 13/50=

43 11/100=

1 67/100

Decimal form:

1/4=0.25

3/20=0.15

0.25=

-15.62=

0.15=

43.11=

16.7

(i don't know which form you needed so this is fraction simplify and decimal simplify forms, the bold ones are and the un-bold one was the steps)

Related Questions

now they know I don't know math

Answers

I think that it is the one

does anyone know slope?

Answers

Answer:

C. y = 10x + 10

Step-by-step explanation:

[tex]\frac{rise}{run\\}[/tex] = [tex]\frac{10}{1}[/tex] = 10

y = 10x + 10

Bob ate 12 cookies over the past two days. Assume he ate the same amount of cookies each day. How many cookies did Jonathan eat per day?

Answers

Answer:

Its 6 cookies per day

Step-by-step explanation:

12/2=6 6 cookies per day

12 cookies within 2 days..
12/6=2

However, Bob-Jonathan?
This is a confusing question because jonathan is not mentioned..

I hope this helps! Let me know if you have any questions! Good luck on the rest of your assessment!

Mark this as Brainliest if you get a chance:)

Represent the following in rule method C = {0,1,2,3, ......,19}

Answers

Answer:

[tex]C={x\:l\:x \: are \: whole \: numbers \: less \: than \: 20}[/tex]

Answer:

it would probably be C but you should check it

What is the volume of BOTH of the rectangular prisms?

Answers

Volume of both the rectangular prisms:

3) 33
4) 91.125

Answer:

The first one is 33 units.

The second is 91.125 units.

Step-by-step explanation:

What is 81/50 as a mixed number?

Answers

Answer:

1 31/50

Step-by-step explanation:

there is one set of 50 and the remaining it 31 :)

1 31/50 1 set of 50 81-50= 31

i keep getting confused on this one

Answers

Answer:

he made the mistake on step one, he didn't distribute correctly

Step-by-step explanation:

-5(x-1) = -5x +5

not -5x - 1

A scrapyard had 200 tons of recycled steel. They sold 15 tons per day for several days. If there are 80 tons left at the scrapyard, how many days have passed?

a) Write and solve an equation to answer the question.

b) What does the solution of your equation mean in terms of the answer to the question?

Answers

Answer:

A.

200 - 80 = 120

120 / 15 = 8

8 days passed

A cleaning mixture requires 5 cups of water for every 2 cups of solution.

Which ratio of cups of water to cups of solution will make the same cleaning mixture?


a. 20:14

b. 60:18

c. 8:20

d. 15:6

Answers

I believe the correct awnser is c let me know !
The correct answer is D!

Triangle PQR has coon instes (2.4), 0(-2,4), R(0,-6). Write the coordinates of the vertices of the image of a triangle afte aanslation 3 units left and 1 unit up.

Answers

P’= (-1,5)
Q’=(-5,5)
R’=(-3,-5)
(0,3) and (1,-3) cuz since it moves 4 units to the left it makes it negative 3 and 1 unit up

whos the brainyiest? if you get it right ill mark you the BRAINYEST 10 POINTS

Answers

Answer:

The third one is the correct answer

Step-by-step explanation:

Answer:The  3 one

I am really bad at explaining

HELP ME PLSSSSSSSSSSSSSSS THIS STUFF IS HARD

Answers

Answer:

v=58

Step-by-step explanation:

All we have to do here is plug in the numbers for the corresponding letters. That means we are left with v=13+9*5. So then all we have to do is put it in the calculator and we get 58.

Answer:

v=58

Step-by-step explanation:

I don't quite understand these sorry if its a lot to u guys but I need each question done

Answers

Answer:

For question 5 the answer is A

Step-by-step explanation:

Question 1: A, a triangular prism

You can tell that it’s a triangle prism because a pyramid would have a square in the middle, not a triangle

Question 2: 20ft

Horse a travels 32 feet per second and horse b travels 28 ft per second. To find how far they Travis’s after 5 seconds you multiply by 5 because 1 (second) x 5 is 5 seconds

Horse a: 32 x 5 = 160

Horse b: 28 x 5 = 140

To fin how much further horse a tracked subtract.

160 - 140 = 20

So horse a traveled 20 more ft

Question 3: 80 nickels, 120 dimes, and 300 quarters

For every 2 nickels there are 3 dimes and for every 2 dimes there are 5 quarters
Let the number of nickels be n. Then the number of dimes is 3/2 n. There are 5/2 as many quarters as dimes, so there are 5/2 * 3/2 = 15/4 as many quarters as nickels = 15/4 n thus the number of nickels, dimes and quarters is

n + 3/2 n + 15/4 = 4/4 n + 15/4 n = 25/4 n

25/4 n = 500

n = 500 * 4/25 = 80

d = 3/2 n = 3/2* 80 = 120

q = 15/4 n = 15/4 * 80 = 300

So

80 nickels, 120 dimes, and 300 quarters

How much are the coins in the piggy bank worth?

Nickel = 5 cents

Dime = 10 cents

Quarter = 25 cents

4 quarter make a dollar so divide the # of quarter by 4

300 divided by 4= $75

20 nickels make a dollar so divide the # of nickels by 20

80 divided by 20 = $4

10 dimes make a dollar so divide the # of dimes by 10

120 divided by 10= $12

Add

75 + 4 + 12 = $91

Do the answer to part be is $91

Question 4: $51.96

If 3 books is 12.99 we need to find out how much one is. So we divide 12/89 by 3

12.99 divided by 3 = 4.33

So one book is $4.33. Now we need to find out how much 12 books cost. So multiply 4.33 by 12.

4.33 x 12 = $51.96

(Hope this helps)

In complete sentences, explain an advantage and disadvantage for paying by cash.

Answers

Answer:

Step-by-step explanation:The advantag of paying with cash is you don’t have to get a card and swap it sometimes not know the balance on the card rather with money u know exactly how much you have .a problem with cash  is that u can drop and not get it back.As if u drop a the card u can lock it and change money to a different account or card.yea so that’s the advantage  and disadvantage to  paying by cash

hopes this helps

Ok with cash, the advantage is that it’s easier to do and quicker, the disadvantage is that it can be lost very easily and it can be stolen and there would be nothing to do about it. With credit card, if it gets stolen, it can be canceled and you could get a new one. Same if you lose it.

Hope I helped! And a little advice, pls don’t copy and past. Instead change the order, and the words of my answer to help.

If you get this right, You will get brainliest.

Answers

Answer:

Get what right. please tell me

Answer:

Please is the magic word so can I please have brainliest

Step-by-step explanation:

The rent for an apartment goes down by $35 per month.

What integer represents the situation?

Answers

are there any options? or no

Answer:

The integer that represents this situation is -35

which number is not in scientific notation? HELP WORTH 5 POINTS!!

Answers

Answer:

B

Step-by-step explanation:

Kasper made 3 gallons of fruit punch for a party

Answers

Answer:

C) - the one with 3 squares and 8 parts inside it

Step-by-step explanation:

It would be this because there are 8 servings in one gallon so 24 servings in all between the 3 gallons

Solve the inequality:
x + 10 + 4x ≤ 45
x ≤ ____?

Answers

Answer:

Inequality Form:

x≤7

Answer:
The inequality would be
x < 7

-1/5(15x-10)=-24
solve algebraicly

Answers

Answer: [tex]\frac{26}{3}[/tex] or 8.666...

Step-by-step explanation:

[tex]-\frac{1}{5}(15x-10)=-24\\[/tex]

[tex]-3x+2=-24[/tex]

[tex]-3x=-26[/tex]

[tex]x=\frac{26}{3}[/tex] or [tex]8.666....[/tex]

please give me a brainliest answer

Answer:

x = 26/3 or 8.6666...

Step-by-step explanation:

-1/5(15x-10)= -24-1/5×15x+-1/5×(-10) = -24-3x+2 = -24-3x = -24-2x = -26/-3x = 26/3

Plz help I don not understand how they got these options.

Answers

Your answer is the top one, w≥3.

Answer:

w [tex]\geq[/tex] 3

Step-by-step explanation:

[tex]\frac{2}{3}[/tex]w -3 [tex]\geq[/tex] -1

get w alone on one side of the equation by simplification:

[tex]\frac{2}{3}[/tex]w -3 [tex]\geq[/tex] -1

    +3    +3

[tex]\frac{2}{3}[/tex]w [tex]\geq[/tex] 2

÷ [tex]\frac{2}{3\\}[/tex]       ÷[tex]\frac{2}{3}[/tex]

w [tex]\geq[/tex] 3

To avoid a storm, a passenger-jet pilot descended 0.38 mile in 0.4 minute. What was the plane's average change of altitude per minute?

Answers

Answer:

0.55 mile / minute

Step-by-step explanation:

The average change of altitude per minute would simply be the ratio of distance descended over time. That is:

average change of altitude = distance / time

average change of altitude = 0.44 mile / 0.8 minutes

average change of altitude = 0.55 mile / minute

Tell whether the graph represents a linear nonproportional or proportional relationship

Answers

Answer:

nonproportional.

Step-by-step explanation:

Answer:

Nonproportional

Step-by-step explanation:

Can someone please answer this i have been struggling this for about 20 minutes all you have to do is copy and paste the link and you will see

Answers

I don’t see any link? try copy and pasting on what you need help on, if you have a computer press Ctrl + C then to paste press Ctrl + V and if your on a mobile double tap the writing and press copy then when you want to paste double tap again and press paste I hope this help

On a round trip over the same roads, Sophia averaged 24 mi/hr going and 30 mi/hr coming back. If the whole trip took 13.5 hours, what is the distance one way? (Hint: Find the time for each part of the round trip)

Answers

Answer:

d = rt.  In this problem we are looking for the distance, but we will have to go about it indirectly.  If she's traveling the same exact road going and returning, then the distance traveled both ways is exactly the same.  Since d = rt, and d is the same, by the substitution property, if and , then , and .  So we need to rt for the trip going, rt for the trip returning and set them equal to each other and solve for t.  Going is a rate of 24, and the time is t (since we don't know t), and returning is a rate of 30, and the time is 13 1/3-t.  (If the whole trip takes 13 1/3 hours, and t is the time going, then the time returning is the difference between the total time and the going time.  That concept is one that baffles most algebra students!). So our r1t1 is 24t, and our r2t2 is 30(13 1/3 - t).  Set them equal to each other and that will look like this:    That fraction of 40/3 is 13 1/3 made into an improper fraction.  Distributing that we will have and 54t = 400.  That means that t = 7.407.  We have time, and that's great, but we need distance!  Go back to one of your equations for distance and sub in t and solve for d.  d = 24t, and d = 24(7.407), so d = 177.768 miles.

182.25 because if you multiply 13.5 by 24 and add that by 13.5 times 30 and divide that by two that’s the average of the entire way and then you divide by 2 again to get the average distance one way the units would be mi (miles)

Tank A has a capacity of 20 L. It is half
filled with maple syrup. The ratio of
the volume of maple syrup in Tank A
compared to the volume of maple syrup
in Tank B is 2 : 5. How much maple syrup
is in Tank B?

Answers

Answer:

25 liters in Tank B

Step-by-step explanation:

There is 100 L of maple syrup in Tank B.

Someone please answer this this is due today please help me

Answers

Answer:

From least to greatest: {3/10 + 3/8}, {3/10 + 3/4}, {1 2/15 + 1/10}, {1 2/15 + 3/8}

Step-by-step explanation:

Simplify each expression:

1 2/15 + 1/10 = 17/15 + 1/10: The LCM is 30 because 15 × 2 is 30 and 10 × 3 = 30. So multiply 17/15 by 2 so you get 34/30. Then multiply 1/10 by 3 to get 3/30. So you get 34/30 + 3/30 = 37/30.

3/10 + 3/4: The LCM is 20 because 10 × 2 = 20 and 4 × 5 is 20. So multiply 3/10 by 2 so you get 6/20. Then multiply 3/4 by 5 so you get 15/20. So you get 6/20 + 15/20 = 21/20.

1 2/15 + 3/4 = 17/15 + 3/4: The LCM is 60 because 15 × 4 = 60 and 4 × 15 = 60. So multiply 17/15 by 4 to get 68/60. Then multiply 3/4 by 15 so you get 45/60. So you get 68/60 + 45/60 = 113/60.

3/10 + 3/8: The LCM is 40 because 10 × 4 = 40 and 8 × 5 = 40. So multiply 3/10 by 4 to get 12/40. Then 3/8 by 5 to get 15/40. So you get 12/40 + 15/40 = 27/40.

Now you have: 37/30, 21/20, 113/60, 27/40. Now you can use a calculator evaluate each quotient and determine the order of each expression.

HELPPPP!!!!!!!!!!!! Please.

Answers

D. 69

(2*3, 3*3) = (6, 9)
Answer D
………………………………

if k = 7 then find the value of 2k²

Answers

Answer:

98

Step-by-step explanation:

k = 7

2k^2

do the exponent

7 x 7 = 49

49 x 2 = 98

Answer:

boy

Step-by-step explanation:

help? please...........

Answers

Answer:

see below

Step-by-step explanation:

point A is (2, 1 1/5)

point B is (-2, 1 1/5)

point C is (-1, 1/4)

C= -1 1/2 , 1/2
B=-2 , 1 1/2
A=2, 1 1/2
I think this is correct
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