Ok so I need help with multiplying fractions, this is the way my teacher did it but I have no idea how to do it the way he did it so if someone can, please explain to me on how to do it
Answers
example 1: this is basically reducing WHILE multiplying. since 5 and 10 have a greatest common factor and is able to be reduced by each other, we do so. hence the reason 5 went to 1 and 10 went to 2 because 5 goes into 5 once and 5 goes into 10 twice. it was a different case for 3 and 8. 3 obviously cant go into 8 and 3 is prime so nothing can be done with those. ONLY REDUCE WHILE MULTIPLYING DIAGONALLY you CANNOT do up and down or side to side. so our new fractions are [tex]\frac{3}{2}[/tex] and [tex]\frac{1}{8}[/tex] so multiply across and get [tex]\frac{3}{16}[/tex] which cant be reduced more.
example 2: this one in my opinion is pretty easy. you take the two fractions and multiply regularly across. you get [tex]\frac{27}{80}[/tex]. that fraction can be reduced. so we find the prime factorization of each number. 3 is a prime factor. 3x3x3=27 which is our top number. 2 and 5 are all prime numbers used to reach 80. 2x2x2x2x5=80. that's the prime factorization method its an easier way to check your work also.
example 3: this one is practically a combination of the two previous ones. [tex]\frac{16}{21}[/tex] and [tex]\frac{7}{8}[/tex] can be diagonally reduced on both diagonals. 7 goes into 7 once and 7 goes into 21 three times 8 goes into 8 once and 8 goes into 16 twice. now we have [tex]\frac{1}{1}[/tex] and [tex]\frac{2}{3}[/tex] multiply across and get just [tex]\frac{2}{3}[/tex]. prime factorization is the best way to do this but, more effective with larger numbers. [tex]\frac{2*2*2*2*7}{3*7*2*2*2}[/tex] now cross out the numbers that are the same on the top and bottom. three 2's cancel out, one 7 cancels out, and now we're left with [tex]\frac{2}{3}[/tex].
I really hope this helps you!!
Related Questions
GIVING POINTS AND BRAINLIEST!!!
Answers
Step-by-step explanation:
biggest circle option C, hope it helps radius = 6 inches
Explain the first steps to factoring when the leading coefficient is 1.
a) List the factors of a that add up to b.
b) Split the c term to factor by grouping.
c) Find the factors of c that add up to b.
d) Multiply b and c, then find the factors.
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Answer:
In general, for a trinomial of the form x2+bx+c x 2 + b x + c you can factor a trinomial with leading coefficient 1 by finding two numbers, p and q whose product is c, and whose sum is b.
A nesting box for a falcon is put on top of a 96 ft pole. There are 3 ft in 1 yd.
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Answer:
32 yards
Step-by-step explanation:
The sales tax in one state is 5%. Write a function rule for finding the total cost of an item with selling price x. Then find the total cost of CD player with a selling price of $110
Answers
Answer:
Total Cost = 1.05x
CD Player cost = 110*1.05 = $115.50
Step-by-step explanation:
plz answer the picture below fast and correctly!
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Answer:
a) BOC = 80⁰
b) COD = 60⁰
Step-by-step explanation:
..................
Answer:
BOC is 80 and COD is 60
Step-by-step explanation:
If DOF is 120 you subtract 40 from it because of of AOB then COD is the remaining of 180
1 point
8. Find a positive angle that is less than 360° that is coterminal with a -80°
angle
*
260°
440°
-440°
None of the above
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Hope this helps you
umm what is this?????
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Answer: The correct answer is 1/2 ÷ 1/11.
Step-by-step explanation:
Answer:
1/2 ÷ 1/11 :)
Step-by-step explanation:
11/2= 5.5 and so does 1/2 ÷ 1/11
None of the other answers equal to the same amount.
1/2 ÷ 3/14= 2.3
1/2 + 1/10= 5
8/11 + 1/2= 1.45
Hope this helps! <3
John has $80. Every week, he spends $7.
Create an equation that represents how much money, m, he has after t weeks.
How much money, in dollars, will he have after the fourth week?
Enter the equation and the answer on separate lines.
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7(dollars spent each week) x 4 ( number of weeks)=28 (spent in 4 weeks)
80 - 28 =52
Miles and Lucy decide to sell lemonade to earn some money. They buy pitchers, ice, and mix for a cost of $13.50. The mix makes 8 quarts of lemonade. They decide to sell one cup of lemonade for $0.75. If they sell all 8 quarts, how much revenue will they make and will they make enough to earn $12 each? (4c=1q)
Answers
Answer:
Altogether they made $24 which is enough to earn $12 each
Step-by-step explanation:
Important information:
1 cup: $0.75
4 cups = 1 quart
8 quarts of lemonade altogether
If we are looking to solve for the revenue earned based on quarts, we must first solve for how much money they make on 1 quart
Since 1 cup sells for $0.75 and 4 cups makes up a quart, we must multiply
0.75 × 4 = 3
They make $3 per 1 quart
We are looking for the amount for 8 quarts though, not just 1. Again we must multiply
3 × 8 = 24
They will make $24 if they sell all 8 quarts
The questions ask if they will each earn $12
Since there are two of them, Miles and Lucy, we must divide revenue earned by 2, the number of people
24 ÷ 2 = 12
$12
please help and be correct please :( have a explanation also
Answers
Answer:
Part A: 3 bowls Part B: See Below
Step-by-step explanation:
Part A: If he uses 1/6 to make ONE bowl, 3/6 is one half so he can make THREE bowls.
Part B: Just draw the fact of 1/2 being equal to 3/6 there for making 3 bowls and you'll be good! :)
Hope this Helped! ^ - ^
How many
many inches long is the base of the building in the drawing?
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[tex] \huge \purple{\tt{Answer:}} [/tex]
5 inches
OR15 feet
If I have $25.2, would it be $25.02 or $25.20?
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Answer:
You would have $25.20
if it was 25.02 the 0 would be included, money can be rounded like this too
Answer:
Yeah he/she is correct because I did that too.
Step-by-step explanation:
Create an expression that is equivalent to 9(3x + 5 + x) without using
parentheses.
Answers
Answer:
27x + 45 + 9x
37x + 45
it's here
Expand 3(y + 4).
3(y+4)=
Answers
Answer:
expanded it is x= 3(y+4)
Answer:
3*y + 3*4 = 3*m + 12
Step-by-step explanation:
I NEED HELP PLS ASAP
Answers
The radius of a circle is 14.2 ft. Find the circumference
to the nearest tenth.
Answers
Answer:
89.22123136
Step-by-step explanation:
Answer:
The answer is 89.2 :)
Step-by-step explanation:
Petrol is poured into a barrel.
The graph shows the number of litres of petrol in the barrel.
Calculate how much petrol is being poured into the barrel each minute.
Answers
It rises 140, and goes over 10.
140/10
= 14 liters per minute,
The Jayden family eats at a restaurant that is having a 15% discount promotion. Their meal costs $78.25 before the discount, and they leave a 20% tip. If the tip applies to the cost of the meal before the discount, what is the total cost of the meal? Round your intermediate calculations and answer to the nearest cent.
Answers
Assumed 20% tip is on the discounted meal.
The cost of the meal is $78.65 .
The cost of the meal after discount (15%) is
78.65⋅(1−0.15)≈$66.85
Tip (20%) is : 66.85⋅0.2≈$13.37
Total cost of the meal is 66.85+13.37≈$8
if a dozen eggs cost $3.84 calculate the cost of 30 eggs
Answers
Answer:
30
Step-by-step explanation:
50.0 divided by 100 equals??
Answers
Answer:
0.5
Step-by-step explanation:
Hopefully u got it right
Step-by-step explanation:
If you meant 50 divided by 100
[tex]\frac{50}{100} = \frac{1}{2}[/tex]
or just .5
If you meant 500 divided by 100
[tex]\frac{500}{100} = 5\\[/tex]
what expressions are equivalent to -2(4-3x)+(5x-2)
Answers
Answer:
11x-10
Step-by-step explanation:
1.Rearrange terms
-2(4-3x)+(5x-2)
-2(-3x+4)+(5x-2)
2.Distribute
-2(3x+4)+(5x-2)
6x-8+(5x-2)
3.Eleminate redundant parentheses
6x-8+(5x-2)
6x-8+5x-2
4.subtract the numbers
6x-8+5x-2
6x-10+5x
5.Combine like terms
6x-10+5x
11x-10
•solution
11x-10
IS THIS RIGHT? PLS HELP
Answers
Step-by-step explanation:
yes your answer is absolutely correct ..the value of x comes out to be -1 and 7 ..
please help me will mark brainleist (ik i spelled that wrong)
Answers
Answer:
its way to blurry nobody can see
Answer:
x power 2 +2x-8 = - 6x power of 3
Julie's brother says that instead of paying her the $40 he owes her, he will give her
$2 today and double the amount she has each day for 6 days. Should Julie accept
her brother's offer? Why or why not?
Answers
Answer:
Yes
2*2*2*2*2*2=64
so that is a much better deal than the original 40$
Step-by-step explanation:
n<5
Which of the following could be a possible value for n?
5
3
1
-3
Answers
What is the sum of i° + k°?
Answers
Answer
1 + 32 + 243 + 1024 + .. + n5
Step-by-step explanation:
In ΔTUV, t = 410 cm, ∠U=27° and ∠V=78°. Find the length of v, to the nearest 10th of a centimeter.=
Answers
Answer: 415.2
Step-by-step explanation:
I need help with math if you don't know the answer get out of the question and don't answer it and give the wrong answer or some link or even say "I don't know" or anything like that it's not fair to me cause it a waste of my points I will report your if you do that :) have a nice day and stay safe
Answers
Answer:
1.5 or 1 1/2 pounds of candy
Step-by-step explanation:
First, divide 2 into 4 equal pieces. You do this because of the denominator in 3/4.
2 divided by 4= 0.5
Then 0.5 times 3 because of the numerator in 3/4.
0.5 times 3= 1.5
You can convert this into the fraction 1 1/2 or you can leave it a 1.5
Hope this helps!
1.A five - layer of cake weighs half a kilogram per layer.In each layer,the cake is decorated with icing which weighs 15g.3 candles which weighs 100g each is added.What is the total weight in kilogram of the fully decorated cake?
Answers
Answer: 2.815 kilograms
======================================================
Work Shown:
1 layer = 0.5 kg
5 layers = 5*(0.5 kg) = 2.5 kg
icing = 15 g = 15/1000 = 0.015 kg
1 candle = 100 g = 100/1000 = 0.1 kg
3 candles = 3*(0.1 kg) = 0.3 kg
------------------------
The five layers combine to 2.5 kg. On top of that we have 0.015 kg of icing, and then finally the three candles add 0.3 kg more weight.
The total weight is therefore: 2.5+0.015+0.3 = 2.815 kilograms
help quick!!
Part A: Bill earned $12 walking his neighbors' dogs on Saturday. He earned some extra money on Sunday doing the same thing. Write an expression with a variable that shows the total amount of money Bill earned Saturday and Sunday.
Part B: Bill was able to walk 2 more than twice as many dogs as his friend Steve. Write an algebraic expression to represent the number of dogs Bill walked compared with Steve.
Answers
Answer:
Part A: 12 + x
Part B: 2s + 2
Step-by-step explanation:
First thing you need to know is the difference between an expression and an equation. An expression does not have an equal sign, while an equation does.
To write an expression for Part A, first write the 12 (the amount he got on Saturday). Then, we need to write the addition sign (to find the total amount Bill earned). We don't know how much Bill earned on Sunday, so use any variable (I used x). Because we're writing an expression, do not write an equal sign.
To write an expression for Part B, first write the amount of dogs his friend Steve walked using a variable because we don't know that number (I used the variable s). Then, since Bill walked 2 more than twice as many dogs Steve walked, write the s multiplied by the 2 or just 2s. Now add the addition sign (to find the total amount Bill walked). Add a 2 because Bill walked 2 more dogs than twice as many Steve walked.
Hope it helps!
The expressions formed are 12+x and 2y+2.
What is an Expression?An expression is a mathematical statement which consists of variables, constants and mathematical operators.
Let x be the amount of money Bill earned on Sunday.
He earned $12 on Saturday.
The total amount of money Bill earned is,
=> 12 + x
Let the number of dogs Bill's friend Steve walked is y.
Then the expression for the number of dogs Bill walked compared with Steve is,
=> 2y +2
To know more about Expression
https://brainly.com/question/14083225
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