Mathematics Middle School

Find sum or difference.

1/6 + 3/8

A. 4/6
B. 4/8
C. 4/14
D. 13/24

Answers

Answer 1
1/6 + 3/8
= 4/24 + 9/24
= 13/24

answer
D. 13/24
Answer 2

find common denominator:

6*4 =24, 8*3 = 24

1/6 = 4/24

3/8 = 9/24

4/24 + 9/24 = 13/24

 Answer is D

Related Questions

How can I solve this?
f(x) =
[tex] {10}^{x} [/tex]
Solve,
[tex] {f}^{ - 1} (1)[/tex]

.



Answers

Here you are
Merry Christmas

If x = 3 calculate the value of x2+x

Answers

If x = 3 calculate the value of x^2+x
3^2 +3
= 9 + 3
= 12
The X just represents what the value will be in the equation, in this case 3, and when you have the letter besides a number, you just multiply them together:
x2+x = (2*3)+3 = 9

The answer is 9,
Hope this helps! :)

13x = 32 + 5x this one is solving the equation and checking the solution

Answers

x = 4, You subtract the 5x to the other side then divide the 32 by 8 to get 4.
solution:
13x=32+5x
13x-5x=32
8x/8=32/8
x=4
check:
13(4)=32+5(4)
52=32+20
52=52 right!



On a string of red and blue lights, the red lights blink everyb3 seconds, and the blue lights blink every 5 seconds. How many times will they blink at the same time in one minute?

Answers

when will they blink together?
what is the smallest number they both mutiply to
3*5=15
so every 15 seconds
so at 15, 30, 45, 60 seconds
so 4 times if you count the time exactly at 1 minute
Final answer:

The red and blue lights will blink at the same time 4 times in one minute.

Explanation:

To determine how many times the red and blue lights will blink at the same time in one minute, we need to find the time at which both the 3-second cycle of the red light and the 5-second cycle of the blue light coincide. This is equivalent to finding the least common multiple (LCM) of 3 and 5. The LCM of 3 and 5 is 15, which means they will blink at the same time every 15 seconds.

Since there are 60 seconds in a minute, we need to find how many times 15 seconds fit into 60 seconds. 60 ÷ 15 = 4. Therefore, the red and blue lights will blink at the same time 4 times in one minute.

Answer: The red and blue lights will blink at the same time 4 times in one minute.

Learn more about Blinking lights here:

https://brainly.com/question/21263043

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Kirk has 12 dollars less than jim if Jim spends half of his money and Kirk spends none then Kirk will have two dollars more than jim how much money did they both start with

Answers

kirk started with 16 and Jim started with 28 

How do you solve this using the elimination method of systems of equations?

Answers

x-2y=14      | *-1
x+3y=9

-x+2y=-14  } +
x+3y=9
---------------
   5y=-14+9
   5y=-5
   y=-5/5
     y=-1

x+ 3*(-1)=9
x-3=9
x=9+3
x=12
Since you want to eliminate in the variable, eliminate x because it can be easily crossed out. To get rid of x simply subtract the two equations. So x-x is canceled and 2y- -3y=5y and 14-9=5 so 5y=5 is 1. Now plug 1 into y and you get x=6.
The answer is (6,1) Hope this helps!!!!!!

At 9 am a car (A) began journey from a point, traveling at 40 mph. At 10 am another car (B) started traveling from the same point at 60 mph in the same direction as car (A). At what time will car B pass car A?

Answers

When car B passes car A, they will have traveled the same distance, d.

speed = distance/time

distance = speed * time

Car A travels t time.
Since car B starts an hour later, car B travels t - 1 time.

Car A:
d = st
s = 40t

Car B:
d = st
d = 60(t - 1)

The distance are equal, so

40t = 60(t - 1)

40t = 60t - 60

-20t = -60

t = 3

Car A started at 9 am.
9 am + 3 hours = noon.

Answer: at noon.

Expand (4x + 1)(x - 3) what is the answer

Answers

Im pretty  sure that the answer to your problem would be
4x^2-11x-3
(4x+1)(x-3) disturb 4x*x=4x^2 4x*3=12x 1*x=1x 1*-3=-3 rewrite
4x^4+12x-3 is ur answer
Hope this helps have a nice day

What is the approximate volume of the sphere?


Use 3.14 to approximate pi and round to the nearest hundredth if necessary.
48cm3

150.72cm3

288.00cm3

904.32cm3

Answers

904.32cm3 Your welcome And have a nice day sir/maam

The answer is 904.32cm3. Have a nice day!

the universal set is represented in a venn diagram by

Answers

What universal set? Can you please be more clear?
I believe the answer is a rectangle, but I'm not sure.

what common side do GDE and HED share

Answers

Both triangles share the side ED. You can see this in the triangle name as well as in the picture(graph) given

Find the measure of the numbered angles

Answers

Well...
Some information was cut off but I'll assume that its a parallelogram.
If it's a parallelogram, then angles 1 and 3 are equal and angle 2 and the angle marked as 110 degrees are equal.
Next we know that angles 1 and 2 are supplementary(adds to 180) so angle 1 is 70 degrees.
Because angle 3 is equal to angle 1, angle 3 is also 70 degrees.
Hope this helps :)

18 out of the 25 students are going on the field trip. What percent of the students are going on the field trip?


can you provide the math to please

Answers

Hello.
To find the percentage of how many students went on the field trip, we simply divide 18 by 25. 
18/25 = 0.72

Convert decimal into fraction.
0.72 = 72%

Thus, 18 out of 25 students = 72% of students who are going on the field trip.

You're welcome.

72 is 48% of what number

Answers

72/1 x 48/100
= 18/1 x 48/25
= 864/25
= 34 14/25

The number for which 72 is 48 percent of is approximately equal to 150.

To find the number that corresponds to 72 being 48% of it,  set up an equation.

Let "x" represent the unknown number.

The equation for "72 is 48% of x" can be written as:

72 = 0.48 × x

To solve for "x," divide both sides of the equation by 0.48:

x = 72 / 0.48

x ≈ 150

Therefore, 72 is 48 percent of approximately 150.

learn more about percent here

brainly.com/question/31323953

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Delilah does 184 jumping jacks in 4 minutes. She does her jumping jacks at a constant rate.
How many jumping jacks can Delilah do per minute?

Answers

Delilah does 46 jumping jacks per minute
46 hope this helps bro.

Find the possible values of n in the inequality -3n<81

A. n<27

B. n>-27

C. n=-27

D. n=27

Answers

-3n < 81...divide both sides by -3, and change the inequality sign
n > -81/3
n > - 27 <==

** in an inequality, if u divide/multiply by a negative number, u have to change the inequality sign

What is 64mi/h= ft/s

Answers

64 miles per hour = x feet per second

Convert your units:
1 mile = 5280 feet
1 hour = 3600 seconds

64 miles/hour = 64(5280feet/3600seconds)
= 33792 feet / 3600 seconds = 9.386 feet / second

Therefore, 64 mi/h = 9.39 ft/s.

An electronics manufacturer has 180 capacitors, and the same number of capacitors is needed for each circuit board made. The manufacturer uses the capacitors to make 45 circuit boards

Answers

They used 4 capacitors per circuit board, if that's what you are asking....
180/4=45

The Zigzag River is 144 miles longer than twice the petite River. If the petite River is 46 miles long, how long is the ZigZag river

Answers

The ZigZag river is 236 miles long. Hope this helps!

First multiply 46 by 2 to get 'twice the petite river' then add 144 and you'll get 92 plus 144 which equals 236

how would I solve 4 1/19 × 1 10/21 ?

Answers

First put them into improper fractions which are 77/19 and 31/21, then multiply 77 and 31 and get 2387, and multiply the denominators 19 and 21 which is 399. Then u can put it into a simplified fraction of u wnat
The answer is 5 [tex] \frac{56}{57} [/tex]. 1.)Transform the  mixed numbers into proper fractions. 4 [tex] \frac{1}{19} [/tex] = 19x4 = 76+1=77=[tex] \frac{77}{19} [/tex]. 1 [tex] \frac{10}{21} [/tex] = 21x1=21+10=31= [tex] \frac{31}{21} [/tex].
2.) Multiplying two fractions. [tex] \frac{77}{19} [/tex] x [tex] \frac{31}{21} [/tex]=[tex] \frac{2387}{399} [/tex]. 3.) Simplifying a fraction. [tex] \frac{2387}{399} [/tex] = [tex] \frac{341}{57} [/tex]. 4.) Since the numerator greater then the denominator, convert the improper fraction to mixed number. [tex] \frac{341}{57} [/tex] = 56+5x57/57 = 5 [tex] \frac{56}{57} [/tex]

Simplify.     -(2/3)(-9y)(3/2)(8x)(1) A. 72xy   B. –72xy   C. 72   D. 0

Answers

Your answer would be 72xy
Hope this helps...........

One tank is filling at a rate of 5/8 gallon per 7/10 hour. A second tank is filling at a rate of 5/9 gallon per 2/3 hour. Which tank is filling faster? Explain how you know.

Answers

First recognize that the unit rate we're finding is gallons per hour, or [tex]\frac{g}{h}[/tex].

rate for Tank 1 = x gallons per hour = a gallons / b hours

[tex]T_{1}=\frac{\frac{5}{8}}{\frac{7}{10}}\\\\T_{1}=\frac{5}{8}*\frac{10}{7}\\\\T_{1}=\frac{50}{56}\\\\\\Fill\ rate\ of\ Tank\ 1=\frac{25}{28}[/tex]


rate for Tank 2 = y gallons per hour = c gallons / d hours

[tex]T_{2}=\frac{\frac{5}{9}}{\frac{2}{3}}\\\\T_{2}=\frac{5}{9}*\frac{3}{2}\\\\T_{2}=\frac{15}{18}\\\\T_{2}=\frac{15}{18}\\\\\\Fill\ rate\ of\ Tank\ 2=\frac{5}{6}[/tex]

Valerie and Bret have a total of 24 dog show ribbons.bret has twice as many ribbons as Valerie how many ribbons does each have

Answers

Bret has 16 ribbons and Valery has 8

Explain in your own words that CPCTC means in Geometry AND when it is used?

Answers

CPCTC?
Corresponding parts of congruent triangles are congruent

When?
Used when you want to prove that 2 sides, angles, or triangles are the same.

Convert $8.25 per hour to dollars per year , with work

Answers

8.25*40= $330 a week

330*12= $3960 a year

I am the largest 7-digit number you can write with the digits 3, 6, 9, 4, 0, 8, and 2

Answers

9,864,320

Hope this helps, let me know if there's anything else I can help you with :)
i believe it is 9,864,320

Six friends split the cost of a party. Each person also spends $65 for a hotel room. Each person spends $160 on the party and the room. What is the cost of the party?

Answers

960 plz mark as brainileist...
First do 65*6 then do 160-65=95. So 95*6 as well.
Then just add the sum of 65*6 and 95*6 And that’s the answer.

Mckenzie and Cara both tried to find the missing side of the right triangle. Is either of them correct? Explain your reasoning.

Answers

Since it is a right triangle, we can use the pythagorean theorem:

a^2+b^2=c^2

5^2 + 13^2 = c^2

25 + 169 = c^2

194 = c^2

c = sqrt(194)

What is the Math pattern for 4,25,130,655

Answers

It has a pattern of first multiplying by 4 then add 5 to the product and then add the total to the number and so on.

 4*4=16, 16+5=21, 21+4=25

25*4=100, 100+5=105, 105+25=130

130*4=520, 520+5=525, 525+130=655

Suppose 8 out of 20 students are absent from school less than five days a year. Predict how many students would be absent from school less than five days a year out of 40,000 students

Answers

40,000 x 8 divided by 20 = 16,000 absent students.
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