HELP NEEDED!!!!
Liliana and Marcus are playing a word game. Liliana spells a word incorrectly and loses 18 points. Then Marcus spells a word correctly and has the opposite score. Which is the correct way to represent "the opposite of Liliana's score is equal to Marcus's score"?
A)-18 = 18
B)-(-18) =-18
C)-(18)=-18
D)-(-18)=18
(the answer is not C)
​

Answer:

1. -31

2. 31

3. 42

4. -53

5. 15

6. -15

7. 9

8. -9

9. -27.5

10. 27.5

Step-by-step explanation:

Sorry if some of them are wrong.

Answer:

2 7/18

Step-by-step explanation:

5/6 + (-4/9) - (-2)

30/36 - 16/36 + 2

14/36 + 2

2 14/36

2 7/18

Answer:

Well for some reason my computer will not allow me to see the first half, but if the question you're asking is just ''1/2 divided by 6'' then I can help!

Step-by-step explanation:

1/2 is equal to .5 so to divide .5 times 6 that would get you .083 (3 repeating).

Hope this helps, and again , my apologies for my computer not showing the first two numbers or emojis

Answer:

y=-4

Step-by-step explanation:

Hope this helps :)

Answer:

y = -4

Step-by-step explanation:

Assuming we are solving for y, start by isolating the variable:

-28 = 5y - 8

-20 = 5y (Added 8 on both sides.)

-4 = y (Divided 5 on both sides.)

Answer:

21/8 or 2.625

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

2+1=3

7×3=21

therefor, the sum of the two digits is 3 and 7 times the sum is 21

Answer:

21

Step-by-step explanation:

Answer:

62.4

Step-by-step explanation:

1. 1.3x+37.44=1.9x

2. 1.3x+37.44-1.3x=1.9x-1.3x

0.6x=37.44

3. x=37.44/0.6=62.4

The weight of 1 cubic foot of water is 62.4 lb.

Representing Equation with variable on both sides

Let 'x' pounds be the weight of 1 cubic foot of water.

We know one aquarium contains 1.3 cubic feet of water. So, the weight of 1.3 cubic feet of water = 1.3x

The other aquarium contains 1.9 cubic feet of water. So, the weight of 1.9 cubic feet of water = 1.9x

It is given in the question that the water in the larger aquarium weighs 37.44 pounds more than the water in the smaller aquarium.

The equation would be

1.9x  =  1.3x + 37.44

The above equation quality the condition of variable on both sides.

To find out the weight of 1 cubic foot of water, we will solve the above equation to find the value of x.

1.9x  =  1.3x + 37.44

1.9x - 1.3x = 37.44

0.6x  =  37.44

x = 37.44/0.6

x  =  62.4

So, the weight of 1 cubic foot of water is 62.4 lb.

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Answer:

7/20 or 0.35

Answer:

3/4 - 2/5 = 7/20

Step-by-step explanation:

Rewriting the problem(fractions) you get 15/20 - 8/20.

And 15/20 - 8/20 = 7/20.

Hope you get a 100 on your test! GL!

[tex](x - 5)(x + 7) = 3 x + 21[/tex]

[tex](x - 5)(x + 7) = 3(x + 7)[/tex]

[tex](x - 5)(x + 7) - 3(x + 7) = 0 \\ [/tex]

[tex](x + 7)(x - 5 - 3) = 0[/tex]

[tex](x + 7)(x - 8) = 0[/tex]

[tex]x + 7 = 0 \\ x = - 7[/tex]

Or

[tex]x - 8 = 0 \\ x = 8[/tex]

Answer:

You must produce 12 units

Step-by-step explanation:

19.35 - 9.75=9.60

9.6/0.8=12

Answer:

the answer is 12 units  

Step-by-step explanation:

u get 9.75 an hour and 0.80 for every unit so subtract 9.75 from 19.35 and u get 9.60 now divide that by 0.80 and u  get 12 units

Answer:

Ok, split the numbers into their addends, 16= 10+6, and 48= 40+8. Now distribute: (10+40)+(8+6)=(50)+(14)=64.

if not good, don't guess!

Step-by-step explanation:

Answer:

1: 1/2 2:4/9 3: 1/5 4: 1/4

Step-by-step explanation:

correct me if im wrong

Answer:

hope my answer helps

Step-by-step explanation:

......

Answer:

false

Step-by-step explanation:

Answer: I do not agree because if the number in the ones place is 5 or more then the number in front of it should go up one, therefore the answer would be 29 instead of 28

Step-by-step explanation:

Answer:

9π

Step-by-step explanation:

Area of Circle: πr²

Diameter = radius * 2

Diameter = 3 * 2 = 6

Plug into the formula πr²

(3)²π ≈ 28.274 or 9π

Answer:

208

Step-by-step explanation:

Answer:

Step-by-step explanation:

Option 1

Option 2

Aaron is is wrong, the second option is not better

Answer:

A

Step-by-step explanat:

Answer:

7 is greater

Step-by-step explanation:

ggdghiowwjeh85epeetilsitslstjlssit

Answer:

x3+y3+z3=k  with k is integer from 1 to 100

solution x=0 , y=0 and z=1 and k= 1

For K= 1 , we have the following solutions (x,y,x) = (1,0,0) ; or (0,1,0) ; or (0,0,1) ,

For k =1 also (9,-8,-6) or (9,-6,-8) or (-8,-6,9) or (-8,9,-6) or (-6,-8,9) or (-6,9,8)

And (-1,1,1) or (1,-1,1)

=>(x+y)3−3x2−3xy2+z3=k

=>(x+y+z)3−3(x+y)2.z−3(x+y).z2=k

=>(x+y+z)3−3(x+y)z[(x+y)−3z]=k

lety=αand z=β

=>x3=−α3−β3+k

For k= 2 we have (x,y,z) = (1,1,0) or (1,0,1) or (0,1,1)

Also for (x,y,z) = (7,-6,-5) or (7,-6,-5) or (-6,-5,7) or (-6,7,-5) or (-5,-6,7) or (-5,7,-6)

For k= 3 we have 1 solution : (x,y,z) = (1,1,1)

For k= 10 , we have the solutions (x,y,z) = (1,1,2) or (1,2,1) or (2,1,1)

For k= 9 we have the solutions (x,y,z) = (1,0,2) or (1,2,0) or (0,1,2) or (0,2,1) or (2,0,1) or (2,1,0)

For k= 8 we have (x,y,z) = ( 0,0,2) or (2,0,0) or (0,2,0)

For k= 17 => (x,y,z) = (1,2,2) or (2,1,2) or ( 2,2,1)

For k = 24 we have (x,y,z) = (2,2,2)

For k= 27 => (x,y,z) = (0,0,3) or (3,0,0) or (0,3,0)

for k= 28 => (x,y,z) = (1,0,3) or (1,3,0) or (1,3,0) or (1,0,3) or (3,0,1) or (3,1,0)

For k=29 => (x,y,z) = (1,1,3) or (1,3,1) or (3,1,1)

For k = 35 we have (x,y,z) = (0,2,3) or (0,3,2) or (3,0,2) or (3,2,0) or 2,0,3) or (2,3,0)

For k =36

we have also solution : x=1,y=2andz=3=>

13+23+33=1+8+27=36 with k= 36 , we have the following

we Have : (x, y,z) = (1, 2, 3) ; (3,2,1); (1,3,2) ; (2,1,3) ; (2,3,1), and (3,1,2)

For k= 43 we have (x,y,z) = (2,2,3) or (2,3,2) or (3,2,2)

For k = 44 we have ( 8,-7,-5) or (8,-5,-7) or (-5,-7,8) or ( -5,8,-7) or (-7,-5,8) or (-7,8,-5)

For k =54 => (x,y,z) = (13,-11,-7) ,

for k = 55 => (x,y,z) = (1,3,3) or (3,1,3) or (3,1,1)

and (x,y,z) = (10,-9,-6) or (10,-6,-9) or ( -6,10,-9) or (-6,-9,10) or (-9,10,-6) or (-9,-6,10)

For k = 62 => (x,y,z) = (3,3,2) or (2,3,3) or (3,2,3)

For k =64 => (x,y,z) = (0,0,4) or (0,4,0) or (4,0,0)

For k= 65 => (x,y,z) = (1,0,4) or (1,4,0) or (0,1,4) or (0,4,1) or (4,1,0) or (4,0,1)

For k= 66 => (x,y,z) = (1,1,4) or (1,4,1) or (4,1,1)

For k = 73 => (x,y,z) = (1,2,4) or (1,4,2) or (2,1,4) or (2,4,1) or (4,1,2) or (4,2,1)

For k= 80=> (x,y,z)= (2,2,4) or (2,4,2) or (4,2,2)

For k = 81 => (x,y,z) = (3,3,3)

For k = 90 => (x,y,z) = (11,-9,-6) or (11,-6,-9) or (-9,11,-6) or (-9,-6,11) or (-6,-9,11) or (-6,11,-9)

k = 99 => (x,y,z) = (4,3,2) or (4,2,3) or (2,3,4) or (2,4,3) or ( 3,2,4 ) or (3,4,2)

(x,y,z) = (5,-3,1) or (5,1,-3) or (-3,5,1) or (-3,1,5) or (1,-3,5) or (1,5,-3)

=> 5^3 + (-3)^3 +1 = 125 -27 +1 = 99 => for k = 99

For K = 92

6^3 + (-5)^3 +1 = 216 -125 +1 = 92

8^3 +(-7)^3

Step-by-step explanation:

Answer:

  A.  80

Step-by-step explanation:

No math necessary. You know the brace needs to be longer than the distance between posts, so cannot be 4, 15, or 42 inches. The only answer choice longer than 64 inches is the correct one:

  80 inches

Answer:

b=4.8 or 48/10

Step-by-step explanation:

So first combine like terms

-5b+6+3b=3b-18

-2b+6=3b-18 (-3b from each side)

-5b+6=-18(-6 from each side)

-5b=-24(divide by -5)

b=4.8 or 48/10

Answer:

24 /5

Step-by-step explanation:

Easy algebra work

Answer: 315 miles

Step-by-step explanation:

21 times 15

its 315

Answer:

23.4

Step-by-step explanation:

If he doubles it and gets 46.8. That means his number is half 46.8. Which makes his number 23.4.

Answer:

Not answer but this'll help solve

Step-by-step explanation:

Divide each weight on Earth by 6 to find the weight on the moon

Answer:

(1/2)x =y-5+3z

Step-by-step explanation:

The expression for Half the product of two numbers x and y minus five times a third number z,    [tex]\frac{xy}{2} - 5z[/tex]

An expression is a sentence with at least two numbers or variables having mathematical operation. Maths operations can be addition, subtraction, multiplication, division.

For example, 2x+3

Given that,

A statement, Half the product of two numbers x and y minus five times a third number z

The expression for the given statement = ?

First line- Half the product of two numbers x and y

⇒   [tex]\frac{xy}{2}[/tex]

Second line- five times a third number z

  ⇒  5z

Third operation-

Minus both the expressions

⇒  [tex]\frac{xy}{2} - 5z[/tex]

Hence, the expression is  [tex]\frac{xy}{2} - 5z[/tex]

To know more about Expressions check:

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Answer:

Answer:

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