Mathematics Middle School



Solve the equation:
X+7/8=4



A. X= 4 7/8

B.X= 3 1/8


C.X= - 3 1/8


D. X= - 4 7/8

Answers

Answer 1
answer B.X= 3 1/8

X+7/8=4
x = 4 - 7/8
x =3 8/8 - 7/8
x = 3 1/8
Answer 2
x+7/8 = 4

We want to get the X by itself. So subtract 7/8 from both sides. 

x + 7/8 - 7/8 = 4 - 7/8

Now do the math!

x = 4 - 7/8


Related Questions

Lie needs 15 pieces of string 1/2 of an inch long. She cut a 6 inch piece of string into pieces that are each 1/2 of an inch long. How many more pieces of string does she need?

Answers

3. 6 ÷ 0.5 (1/2) = 12
15 - 12 = 3

The ordered pairs (1, 16), (2, 25), (3, 36), (4, 49), and (5, 64) represent a function. What is a rule that represents this function?
Also, how do I know how to find the rules of functions?

Answers

I know this question is like a year old but here is the answer
y = (x+3)^2


Answer:

The rule representing the function is [tex]f(x)=(x+3)^2[/tex].

Step-by-step explanation:

We are given,

The ordered pairs for the function are (1, 16), (2, 25), (3, 36), (4, 49), and (5, 64).

It is required to find the rule representing the function.

Now, we see that,

[tex]16=(1+3)^2[/tex]

[tex]25=(2+3)^2[/tex]

[tex]36=(3+3)^2[/tex]

[tex]49=(4+3)^2[/tex]

[tex]64=(5+3)^2[/tex]

From the pattern,we get the function is [tex]f(x)=(x+3)^2[/tex].

Hence, the rule representing the function is [tex]f(x)=(x+3)^2[/tex].

What is the answer to 5/6 - 3/12=

Answers

6 x 2 = 12 & 5 x 2 = 10 10 - 3 = 7, therefore 5/6 - 3/12 = 7/12

Remember to always subtract the numerators but never the denominators, same with addition.
You have to find a common denominator.  Multiply 5/6 by 2/2 and then subtract 3/12.

The side length of a cube is √7 cm.

Which answer is a rational value?

The volume.

The perimeter of the front square.

The diagonal of the back square.

The total area of the top and bottom squares.

Answers

The answer is The total area of the top and bottom squares. s = √7 cm is irrational value and we need rational value. Let's check all choices: A. The volume. V = (s)^3. If s = √7, V = (√7)^3 = 7√7 - irrational value. B. The perimeter of the front square. P = 4 * s = 4 * √7 = 4√7 - irrational value. C. The diagonal of the back square. d = s√2 = √7 * √2 = √(7*2) = √14 - irrational value. D. The total area of the top and bottom squares. A = 2 * s^2 = 2 * (√7)^2 = 2 * 7 = 14 - rational value.

What is 6 divided by 1/2 equal

Answers

6 / (1/2) = 6*2 = 12

a manager purchased a total of 21 coffee mugs and key chains. each coffee mug cost $8.50, and each key chain cost $2.75 . if manager spent total of $132.50, how many coffee mugs did the manager purchase

Answers

Final answer:

The manager purchased 13 coffee mugs.

Explanation:

To find the number of coffee mugs purchased, we can set up a system of equations. Let's say the number of coffee mugs is represented by x and the number of key chains is represented by y. We have two pieces of information:

1. The total number of items purchased is 21: x + y = 21

2. The total cost of the purchase is $132.50: 8.50x + 2.75y = 132.50

Now we can solve this system of equations to find the value of x, which represents the number of coffee mugs:

Multiplying the first equation by 8.50, we get: 8.50x + 8.50y = 178.50

Subtracting the second equation from this new equation, we get: 8.50x + 8.50y - 8.50x - 2.75y = 178.50 - 132.50

Simplifying, we have: 5.75y = 46

Dividing both sides of the equation by 5.75, we find: y = 8

Substituting this value into the first equation, we can solve for x: x + 8 = 21

x = 13

Therefore, the manager purchased 13 coffee mugs.

Marc is running 5 kilometers at track practice. He decides to break the run into 3 equal lengths. How long will each length be?

Answers

Divide 5 by 3.
If you do this on a calculator you will get 1.666666667.
You will then round that to 1.7
Because "4 or less let it rest, 5 or more raise the score"

Each length of the track practice will be 1.67 kilometers.

What is Division method?

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications.

For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

Marc is running 5 kilometers at track practice.

And, He decide to break the run into 3 equal lengths.

Now,

Since, Marc is running 5 kilometers at track practice.

And, He decide to break the run into 3 equal lengths

So, The length of each track practice = 5 / 3

                                                          = 1.67 kilometer

Thus, Each length of the track practice will be 1.67 kilometers.

Learn more about the divide visit:

https://brainly.com/question/25018554

#SPJ2

Charlie runs at a speed of 3 yards per second. About how many miles per hour does Charlie run

Answers

To find the answer, you first must find how many yards Charlie can run in a minute. Since there are 60 seconds in a minute, you multiply 3 times 60, which is 180. Then you must multiply this number by 60 again, because there are 60 minutes in an hour. This equals 10,800, your answer.


Charlie can run 10,800 yards in an hour.
The answer is 6.1 miles

Consider the two functions shown here. Which function has the greater rate of change? Explain your answer.
A) Function 1, because the rate of change is 2.
B) Function 2, because the rate of change is ½.
C) Function 2, because the rate of change is 7.
D) Function 1, because the rate of change is ½ .

Answers

rate of change = slope

function 1 :
(0,0)(1,2)
slope = (2 - 0) /(1 - 0) = 2/1 = 2

function 2 : y = 1/2x + 7...in y = mx + b form, the slope is in the m position.
so ur slope here is 1/2.

so function 1 has a greater rate of change because it is 2.......function 2 has 1/2 rate of change

Answer: The answer is A- Function 1, because its rate of change is 2.

On a scale drawing with a scale of 1/80, the height of a building is 9.75 inches. How tall is the actual building?

Answers

the actual building is 780 inches

simplify and plz show work on a piece of paper

Answers

●) -2 (3a - 4b)-6a + 3b
-2 (9a-7b)
●) 10 - 6a - 4y - (-2a) + 9y
10 - 6a - 13y - (-2a)
●) 9 (2x-6) - 3 (5-4x
12 (6x-11)

All I did was combine the numbers with the same variable

Mr. Chin's hotel bill is $143. He leaves 12% of the hotel bill as a tip for the housekeeping service. What is the total amount Mr. Chin pays, including tip? $160.16 $165.00 $170.50 $174.46

Answers

First, begin by converting the tip of 12% to a decimal.

.12

Now, multiply that by the total bill.

.12*143=17.16

We now know the numerical value of the tip.

Add the tip to the total bill and get your answer.

143+17.16=160.16

deshawn deposited $6500 into a bank account that earned 11.5percent simple interest each year . he earned $4485 in interest befour closing the account. if no money was deposited into or withdrawn from the account, for how many years was the money in the account round the answer to the nearest whole year

Answers

Final answer:

The money was in the account for 6 years.

Explanation:

To find the number of years the money was in the account, we can use the formula for simple interest: I = P * r * t, where I is the interest earned, P is the principal (initial amount), r is the interest rate, and t is the time in years. We are given that Deshawn earned $4485 in interest and the interest rate is 11.5%. Let's plug in these values and solve for t:



4485 = 6500 * 0.115 * t



Simplifying the equation gives us:



t = 4485 / (6500 * 0.115) ≈ 6.1337



Rounding to the nearest whole year, we can conclude that the money was in the account for 6 years.

Max bought a package of hamburger that weighs 5 1/3 pounds. He needs 1/3 of that amount for a recipe.

How much hamburger does Max need for his recipe?
Express your answer in simplest form.

Answers

1.5 pounds would be the answer,

A 20,000 gallon swimming pool contains 5000 gallons of water when a hose is placed into the pool and begins adding water at a rate of 1250 gallons per hour. Use the Segment tool to plot a graph representing the volume of water in the pool over time from when the hose is placed into the pool until it is full.

Answers

20000-5000=15000

15000/1250=12

it will take 12 hours

Solution: The  figure 1 shows the graph of the volume of water in the pool over the time from when the hose is placed into the pool until it is full.

Explanation:

It is given that the capacity of the pool is 20,000 gallon and initial water in the pool is 5000 gallons. The remaining capacity of the pool is 15,000 gallons.

The water in the pool increased at the rate of 1250 gallons per hour.

[tex]\frac{15000}{1250}=12[/tex]

So tank will be full after 12 hours.

The initial water in the pool is 5000 gallons and water in the pool increased at the rate of 1250 gallons per hour. So, the volume of water in the pool is described by the equation [tex]V=5000+1250t[/tex].

First we find the value of volume function in different value of t, then plot these points in a coordinate plane and join them with a straight line.

Hence, the coordinate table and graph of the volume function is given below.

how to divied and multiply fraction but in word problems

Answers

you have to use the keywords that register to the problem

Which of the following equations represents the greatest value of x?


Equation 1
Equation 2
Equation 3
Equation 4
x2 = 35
x3 = 64
x3 = 125
x2 = 38
Equation 1
Equation 2
Equation 3
Equation 4

Answers

I hope this helps you

Answer:

Equation 3

Step-by-step explanation:

Equation 1= 17.5 (35 divided by 2)

Equation 2= 21.3333... (64 divided by 3)

Equation 3= 41.666... (125 divided by 3)

Equation 4= 19 (38 divided by 2)

According to the us census bureau 3/25 of all adults in the us visited a zoo in 2007 what percent of all adults in the us visited a zoo in 2007

Answers

3/25 is 0.12
To move a decimal to a fraction, you multiply it by 100
0.12*100 is 12
So 12% of all adults in the US visited a zoo in 2007

The function w(x) = 60x represents the number of words w(x) you can type in x minutes, how many words can you type in 9 minutes

Answers

To solve this, plug in your given x value (9 minutes) in for x in your formula, so w(x)=60(9)=540 words as your answer.

Answer:540 words

Step-by-step explanation:

Given : The function [tex]w(x) = 60x[/tex] represents the number of words w(x) you can type in x minutes.

Then to find the number of words typed in 9 minutes , we need to pit x= 9 in the function .

The  number of words can be typed in 9 minutes :  [tex]w(9) = 60(9)=540[/tex]

Hence, we can type 540 words in 9 minutes .

On a scale drawing with a scale of 1 cm: 3 m , the height of a tree is 5 cm. How tall is the actual tree?

Answers

In 3 metres there are 300 centimetres. Each centimetre on the scale is 300 centimeters, or a ratio of 1:300. The tree is 5 centimetres on the scale. Each centimeter on the scale is 300 centimetres, therefore 5 centimetres on the scale is 1500 centimetres. 1500 centimetres is equal to 15 metres.
1cm: 3cm
X both by 5
5cm:15cm the actual tree would be 15 meters

a pitcher could hold 1/8 of a gallon of water. If John filled up 9 pictures how much water would he have

Answers

one 8th of a gallon is 16 Ounces, or a pint. 

So he would have 144 ounces, or 9 pints.
1 and 1/8 of a gallon. 8 pitchers would equal 8/8 = 1. then we have the pitcher #9 that gives you another 1/8

Need help with this problem thx!!!!!!

Answers

First, get the price of one pound of fruit.
To find the price, divide 4.50 by 2: 4.5 / 2 = 2.25

Then multiply 2.25 by 13 to get the answer: 2.25 * 13 = 29.25
So, if 2 pounds is 4.50, then if you divide both by 2, you get how much 1 pound is, which is 2.25.
Then, you can multiply 2.25 by 13 to get $29.25, which is your answer.
Hope this helps!

Simplify.



(–24ab) ÷ (–3)





















Answers

Your answer is going to be 8ab
The right answer is 8ab.

Round 35,894 to the greatest place

Answers

35,894 rounded to the greatest place is 36,000
Hoping that I rounded it to the right place. 
It would be 35,900

Emma has 53 marbles she gets some marbles from Fred then she gives 10 marbles to yessir she how has 58 how many does she gets from Fred

Answers

53 + x - 10 = 58 (x = marbles Fred gave)
53 + x = 68 (use operations on both sides, subtract 10 from left side and add 10 to right side)
x = 68-53 (switch the placement around)
x = 15
Fred gave her 15 marbles.

Danika and Karen bought a pizza that was cut into 8 slices. If Danika ate 3/4 of the pizza, how many slices were left for Karen?

Answers

2 slices left for karen
Since 4/4 is 8, to solve for 1/4, you have to divide 8 by 4, which is 2. 1/4 = 2, so 2/4 = 4, and 3/4 = 6. Danika ate 6 slices of pizza because she ate 3/4 of the pizza. Since there is only 1/4 left, Karen only has 2 slices of pizza left. Another way you could do it is you could subtract 6 from 8 to get the remaining amount, and you would still get 2 slices left for Karen.

SOLVE FOR R--
r/6=5 2/3

A.34
B.30 2/3
C.20
D.17/18

Answers

The answer is A. 34

r=34

r/6 = 5 2/3

5x3+2 over 3 = 17/3

r= 17/3 x 6 = 102/3

102 ÷ 3 = 34

At Southside Middle School, 30% of the students play an instrument. There are 310 students. How many students play an instrument? 93 students 130 students 217 students 290 studentsAt Southside Middle School, 30% of the students play an instrument. There are 310 students. How many students play an instrument?

Answers

OK, so I think you divide 30 by 310 which would be... 1 R 10  or fraction one and one-third 1 1/3
Does this help?

Answer:

93 students

Step-by-step explanation:

We need to calculate the 30% of 310 students.

We can calculate with a direct rule of 3. If the 100% is 310 students, how many students are the 30%?

[tex]100 -\!\!\!-\!\!\!- \text{310 students}\\ 30 -\!\!\!-\!\!\!- \text{x students}[/tex]

We use the formula of the direct rule of 3:

[tex]x = \frac {30 * 310}{100} \\ \\ x = \frac {9,300}{100}\\[/tex]

x = 93

93 students play an instrument at Southside Middle School.

Lee,Shawn, and Jade share a box of 754 beads. The ratio of Lee's share of beads to Shawn's share of beads is 4:3. The ratio of Shawn's share of beads to Jade's share of beads is 9:5. How many beads does Lee have?

Answers

All you got to do is subtract because it says how many beads does lee have make a place value chart to help

List
. Lee,shawn,and jade share a box of beads
. They share a box of 754 beads
. The ratio of lee's share of beads is 4:3

754
- 4.3
_____
7.11

What does x equal? 3(14x-15)=-72

Answers

-.642 is the correct answer in pretty sure.....
The 3(14x-15) is basically multiplying so 3*14x-3*15 so that would be 42x-45=-72. After that, you add 45 on both sides canceling -45 and make the -72 to -27. 42x=-27, now you divide 42 into both sides making x=-27/45.
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