Please answer the following essay question:
Explain why we need to have a common denominator in order to add or subtract fractions.
Answer in paragraph form using complete sentences and include any calculations, graphs, and labeled diagrams as appropriate.
Answer: The denominator of a fraction tells you the relative size of the pieces. Therefore, the reason fractions need a common denominator before adding or subtracting is so that the numbers of pieces you are adding/subtracting are all the same size.
Answer:
We need to have a common denominator in order to subtract different fractions because if we have an example like.
5/2 - 6/8 we cannot do that because the denominator is not alike.
We have to use multiplication to help us here.
2 x 8 = 16 !
So. no we have 5/16
so now we do 5 x 8 = 40
So now my new fraction is - 40/16 BUTTTT 40/16 is an improper fraction. so 40/16 = 5/2
Now we are back at the square 1 so now we have to fix 6/8.
8 x 6 = 48
6 x 6 = 36.
--
2 x 24 = 48.
5 x 24 = 120 or 12
now we have 12/48 and 36/48.
We can subtract now!
Hope this helped for problems like this.
.
The table shows a proportional relationship between x and y. What is the unit rate of y per x?
A) 1 B) 3 C) 6 D) 9
Answer:
The unit rate of y per x is 9
Step-by-step explanation:
In this question, we are asked to give the unit rate of x.
To do this, we will critically look to establish the relationship between both set of values.
Looking at the values critically, we can see that the values in the first brackets, when multiplied by 4 will give the values in the second bracket. Hence we can say that the values in the second bracket are multiples of the first by 9.
Is this right? I’m currently taking an assessment and I need to make sure I am right.
Answer:
yes your correct :)
Step-by-step explanation:
First-person to get this right with an explanation gets Brainliest
Segment AB measures 3 cm. Point O is the center of dilation. How long is the image of AB after a dilation with
1. Scale factor 5?
2. Scale factor 3.7?
3. Scale factor 1/5?
4. Scale factor s?
Reflection/Math 10points
Hola!
I just wanted to say Goodluck! :)
hi again answer these questions lspslsplsplspsldpwkqmeij3k1nh32jn3213123421
Answer:
i don't even know the answer to this stuff lol
Help 10 points please
Answer:
jaxoscxhdnsidsbc
Step-by-step explanation:
aciowshavpaslkn oica xhkvsaih oilcs
simplify by combining like terms: 5b + 0.2c + 0.8b
Answer:
5.8b+0.2c
Step-by-step explanation:
5b+0.8b = 5.8b
5.8b+0.2c
Ruth decides to test the method of proportions and similar
triangles to find the height of a tree. She decides to again find the
height of a tree she had measured earlier in the day at 10 A.M. This
time, she decides to use this method at 5 P.M. in the evening. She
measures the length of the tree's shadow and finds it to be 48 feet
long this time. Then she holds a 12-inch ruler perpendicular to the
ground and finds that it casts a 24-inch shadow. How tall will she find
the tree?
a. 6 ft c. 48 ft
b. 24 ft d. 288 ft
Answer:
B.
Step-by-step explanation:
Think about how you can use absolute value notation to express the distance between two points on a coordinate graph. For each pair of points below, find the distance between the given points and express your work using absolute value symbols. Please Show or Explain your work.
(4, 9) and ( –5, 9)
(7, –1) and (7, –4)
(0, 9) and (0, –7)
(4, –8) and (–10, –8)
The number of students who attended Lincoln Middle School last year was 860. This year, the attendance has increased to 1032 students. What percent of last year’s student population is attending Lincoln Middle School this year?
Answer:
120%
Step-by-step explanation:
I just got it right !!
Answer: 120%
Step-by-step explanation: n =120%
what's the missing side? A side of 6 cm and a side of 6 cm. what is the hypotenuse? Round the answer
Answer 4 I think
Step-by-step explanation:
6*6=36 round it off 4
PLS HELP ME THIS IS FOR MY MATH HOMEWORK!
Answer:
since there gonna eat two servings of 3/8 of turkey it should be 6/8 per person so there gonna need to buy 12 turkeys and it should cost 12.6
Step-by-step explanation:
two servings of 3/8 is equal to 6/8 and if multiply 6/8x15 we get 11.25 in total 12 turkeys will be needed, if we get 11 turkeys there will be one person with less turkey than the other people
There are approximately 250.9 million cars in the United States.
Spain has approximately 25.1 million cars. About how many times
more cars does the U.S. have than Spain? Explain why your answer
is reasonable.
Answer:
9.99 (SIMPLIFIED ANSWER)
Step-by-step explanation:
First, we have to divide 250.9 (The dividend) by 25.1 (The divisor), and you get 9.99601593625, but if you need to simplify it, it would be 9.99.
Machine A makes 12.75 ounces of popcorn in 3 minutes. Machine B makes 18 ounces of popcorn in 4 minutes. If each machine makes popcorn for 10 minutes, will there be enough popcorn for eight 9-ounce bags? Explain.
A. Yes; Machine A and Machine B make 77.5 ounces in 10 minutes. 77.5 > 72, so there will be enough popcorn.
B. Yes; Machine A and Machine B make 87.5 ounces in 10 minutes. 87.5 > 72, so there will be enough popcorn.
C. No; Machine A and Machine B make 67.5 ounces in 10 minutes. 67.5 < 72, so there will not be enough popcorn.
D. No; Machine A and Machine B make 30.75 ounces in 10 minutes. 30.75 < 72, so there will not be enough popcorn.
Answer: Machine A makes popcorn at a rate of 4.25 ozs per minute (12.75oz/3min).
Machine B makes popcorn at a rate of 4.5 ozs per minute (18oz/4min).
Machine A will make 4.25oz/min * 10minutes = 42.5oz of popcorn after 10 minutes
Machine B will make 4.5oz/min * 10 minutes = 45oz of popcorn after 10 minutes
After 10 minutes there will be a total of 42.5oz (Machine A) +45oz (Machine B) = 87.5oz.
So the answer is: Yes there will be (more than) enough popcorn if both machines make popcorn for 10 minutes.
If the question is wondering how many 9oz bags they can fill: 87.5oz/9oz per bag = 9.7222 bags. The machines can fill 9, 9oz, bags with some popcorn leftover.
Step-by-step explanation:
Answer:
A/B
Step-by-step explanation:
They will have enough popcorn
Either way there will be enough popcorn to make eight 9-ounce bags.
Hope it helps
Using compatible numbers, which of the following is the best estimate for 564 ÷ 73?
A. 8
B. 9
C. 7
D. 6
True or False
Through any two distinct points there is exactly one line.
Answer:
True
Step-by-step explanation:
I mean, it's pretty obvious...
Answer:
TRUE
Step-by-step explanation:
From any two distinct points only one line can be drawn.But from one point infinite lines can be drawn.HOPE THIS HELPS YOU
Follw me = 10 thanks
Mark as brainliest = 10 thanks
1 thanks to me = 2 thanks
I REALLY REALLY NEED HELP ON THIS!!! IF YOU SHOW YOUR WORK I WILL MARK YOU AS BRAINLIEST!! WORTH 20 POINTS!!! A water pump moves 360 gallons of water in 18 minutes. Draw a graph of the situation. How long would it take to pump 1,080 gallons of water? Find the number of gallons pumped each minute.
help would be nice :p *pls don't leave this qestion.....I will cry :|*
Which is the best description of the equivalency of the two expressions?
Expression 1
5 x squared minus 2 x minus 4 + 6 x + 3
Expression 2
6 x squared minus 6 x + 6 minus x squared + 10 x minus 7
A.) The two expressions are not equivalent because when x = 2, the two expressions do not have the same value.
b.)The two expressions are not equivalent because when they are simplified, they do not have the same coefficients for the x squared and x terms.
c.) They are equivalent because the sum of the constants is the same in both expressions.
D.) They are equivalent because when x = 2, the two expressions have the same value.
Answer:
D
Step-by-step explanation:
i think its D hope this helped!
Dan bought one package if blackberries for 3 dollars/euros. How many packages can Darryl buy if he has 15 dollars/euros?
Answer:
Dan can buy 5 bags for 15 dollars
Step-by-step explanation:
divide 15 and 3 it will equal 5
Answer:
5 packages of blackberries for $15 EUR
Step-by-step explanation:
Solve with SF;
Scale factor is 3/1
y = 1/3x
y = 1/3(15)
y = 15/3
y = 5
Consider Brainliest!
What is the circumference of the circle defined by x^2+6x +y^2-12y-4=0.
Answer:
44.0
Step-by-step explanation:
Mark me as brainliest
Edward doesn't know how to do math. Can you help me help him lol
Answer: d = 147/4 or 36.75
Edward didn't isolate for 'd' by rearranging the terms.
(4/7)d = 21 (Multiply both sides by 7 to get rid of the 7 on the left side)
4d = 21 · 7
4d = 147 (Divide both sides by 4 to isolate for d)
d = 147/4 or 36.75
How many solutions does the equation below have?
2x−7+19=6x−4x+12
A.Infinitely many solutions
B.No solution
C.1 solution
D.2 solutions
Answer:
Infinity or All real numbers
Step-by-step explanation:
2x-7+19=6x-4x+12
2x+12=2x+12
-12 -12
2x=2x
/2 /2
x=x
Please help! (I'll give brainliest to the first right answer.)
(you don't have to do 2 and 4)
Nobody has gotten it right so far :(
Answer:
1. initial point is (2, 4)
reflected point is (-2, 4)
the coordinates are similar because they involve the same numbers, however, with the reflection across the Y axis, the X point became negative.
2. initial point is (2, 4)
reflected point is (2, -4)
again, same numbers but the X value becomes negative
Hope this helps!
Write 240 as an exponent with a base of:
2^2
2^5
2^8
Please answer all 3! Will Award brainliest!
Answer:
2^2=4
2^5=64
2^8=512
Step-by-step explanation:
2x2=4
2x2=4, 4x2=8, 8x2=16, 16x2=32, 32x2=64
2x2=4, 4x2=8, 8x2=16, 16x2=32, 32x2=64, 64x2=128, 128x2=256, 256x2=512
Factor out the coefficient of the variable term.
The expression 1.5y – 6 factored is
Answer:y=4
Step-by-step explanation: Simplifying
1.5y + -6 = 0
Reorder the terms:
-6 + 1.5y = 0
Solving
-6 + 1.5y = 0
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '6' to each side of the equation.
-6 + 6 + 1.5y = 0 + 6
Combine like terms: -6 + 6 = 0
0 + 1.5y = 0 + 6
1.5y = 0 + 6
Combine like terms: 0 + 6 = 6
1.5y = 6
Divide each side by '1.5'.
y = 4
Simplifying
y = 4
The equivalent equation, if 6 is factored out from the expression is 6(0.25y - 1)
Given a linear equation y = mx + b where b is the constant.
Given the linear equation f(y) = 1.5y - 6, we can see that 6 is the constant in the expression.
Factoring out 6 from the expression
[tex]f(y) = 1.5y-1.6\\f(y)=6(\frac{1.5y}{6}-\frac{6}{6} )\\f(y)=6(\frac{0.25y}{1} -1)\\f(y) = 6(0.25y-1)[/tex]
Hence the equivalent equation, if 6 is factored out from the expression is 6(0.25y - 1)
Learn more here: https://brainly.com/question/20953433
What is wrong with the equation.
Answer:
not the at most sign
Step-by-step explanation:
What is the distance between -3 and 12
Please answer asap, its due in a couple days :3
How long does it take the penguin to walk 45 feet? explain
Answer:
It will take the penguin 26.95 sec to walk 45 feet.
Step-by-step explanation:
Step-by-step explanation: Given. Distance = d = 10 feet. Time = t = 6 sec. First of all we have to calculate speed . Let s be the speed, then. Now, How far does the penguin walk in 45 seconds? Here we know the speed and the time . So, s=1.67 ft per sec. t = 45 sec