MATHEMATICS MIDDLE SCHOOL

Justin bought 6 ribbons for an art project. Each ribbon is 1/4 yard long. How many yards of ribbon did Justin buy?

Answers

Answer 1
Answer: To answer this question, Justin has bought 3/2 yards of the ribbon.
There are two ways you could answer this question. You could add it or subtract it. First, I will teach you the way of adding to get your answer. So, from this sentence, Justin has bought 6 ribbon and each was 1/4 yards long. You could add it by doing 1/4+1/4+1/4+1/4+1/4+1/4. This would give you 6/4, which would be 3/2 yards(simplified). (This could also be 1.5 yards..)
The second way was multiplying. It would look like this: 1/4 times 6. (Now, 6, could be represent as 6/1) Now you do 1 time 6 for your numerator and 1 times 4, which would be your denominator. This would also give you 6/4 or 3/2 (simplified) Hope this works!! :)
Answer 2
Answer: 6 ribbons
1/4 yard long each
4 yards = 4 ribbons
4/4 yards
A: 6/4 yd

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Sa se gaseasca numerele a si b a caror medie aritmetica este 200 si care sunt invers proportionale cu 8 si respectiv 4,5.
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80% of what # is 16?

Answers

80% of x = 16
"of" translates to multiplication and 80% becomes 80/100.

80/100 × x = 16

0.8x = 16

0.8x/0.8 = 16/0.8

x = 16/0.8

x = 20


Your final answer is 80% of 20 is 16.

72 pint = ? Gallons. How much is the gallon?

Answers

8 pints = 1 gallon 
so divide it by 8 
72 pints ÷ 8 = 9 gallons

Maria works 24.5 hours each week at a bookstore . she earns 8.76 per hour . How much does she earn each week

Answers

Since Maria works 24.5 hours a week and 8.76 per hour, you find the total amount by multiplying 24.5 (hours) by 8.76 (amount per hour)

That gets you $214.62.
She earns 24.5 x 8.76 = 214.62

How do you solve substitution to solve the sytem
x+y=2
-2x+y=2

Answers

so you want to make one of the equations equal to one of the placeholders exg y=x+3

so we have
x+y=2 and
-2x+y=2

I chose to make -2x+y=2 equal to y so
-2x+y=2
add 2x to both sides
y=2+2x

subsitute 2+2x for y in x+y=2
x+2+2x=2
add like terms
3x+2=2
subtract 2 from both sides
3x=0
x=0

subsitute x=0 in x+y=2
0+y=2
y=2

x=0
y=2
separate one variable in either equation, so for example:

x=-y+2
-2x+y=2 

 (if you dont know how to do that, tell me)

now that you have the variable separated, you can substitute the top equation in for the x in the second equation like this

-2(-y+2)+y=2

and now use the distributive property to get:

2y-4+y=2

and just combine like numbers.....

3y-4=2

and if you dont know how to solve it from here, comment to tell me but the rest of the problem would go like this:

3y-4=2
   +4 +4

3y=6
 /3  /3

y=2

and then you take this y and plug it back into one of the original two equations waaayy up at the top like this:

x+2=2

and solve...

x+2=2
  -2 -2 

x=0

so your final answer is (0,2)! Hope this helps!

Is 3 decimeters greater than 30 centimeters?

Answers

"deci" means ten. So 3x10 = 30. With this information the answer is obvious that it is equal not more than.
Yes! 3x10= 30. we all know deci means x 10 so yes.

Help me, please Answer choices
Select each correct answer.
x = −2
x = −1
x = 0
x = 1
x = 2

Answers

Look at the table and find the X value for when both f(x) and g(x) are the same,

They are the same when X is -1 and when x is 0

The two answers would be X = -1 and x = 0
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