Mathematics Middle School

For your party you purchased balloons for $.79 each. You spent a total of $11.85. About how many balloons were purchased?

Answers

Answer 1
15 ballons were purchased

Answer 2

Let us suppose the number of balloons purchased is x in number.

It is given balloons are purchased for $.79 each

Cost of x balloons = .79x.

Total amount spent on purchasing balloons = $11.85

Cost of x balloons = Total cost of balloons.

.79x=11.85

With x .79 is multiplied .Opposite of multiplication is division.

We perform the opposite operation both sides

Dividing both sides by .79

x=11.85÷.79

x=15

Total number of balloons purchased is 15.


Related Questions

A conical hat has a radius of 7 inches and a height of 14. What’s the slant height

Answers

The slant height of a conical hat with a radius of 7 inches and a height of 14 inches is found by using the Pythagorean theorem, leading to a slant height of approximately 15.65 inches.

To find the slant height of a conical hat with a radius of 7 inches and a height of 14 inches, we use the Pythagorean theorem for the right triangle formed by the radius, height, and slant height of the cone. The slant height is the hypotenuse of this right triangle, while the radius and the height are the two legs.

The formula for the Pythagorean theorem is:

a^2 + b^2 = c^2

Where:

a is the radius of the cone (7 inches),

b is the height of the cone (14 inches), and

c is the slant height of the cone (what we are trying to find).

Substituting the values into the formula, we get:

7^2 + 14^2 = c^2

49 + 196 = c^2

245 = c^2

To find c, we take the square root of both sides:

c = √245

The slant height (c) is then calculated to be:

c ≈ 15.65 inches

Can’t afford to get wrong please do not write if you don’t know thanks !

Answers

You don't need to understand the construction or why it works. You only need to accept the fact that it does. You can figure out the answers to this question by looking at the picture.

RT is tangent to circle Q -- TRUE. That is the point of the construction.

QT is a radius of circle Q -- TRUE. Q is the center and T is on the circle. A line segment from the center to a point on the circle is a radius.

m∠QSR = 90° -- FALSE. Those points lie on the same line. The measure of the angle is 180°.

QS = QT -- FALSE. S lies inside circle Q, so is closer to the center than T, which lies on the circle. (For some choice of point R, S might lie on the circle, but because this statement is not always true, it must be considered false.)

ΔRTQ is a right triangle -- TRUE. A tangent line is always perpendicular to the radius to the point of tangency. The construction succeeds because RTQ is inscribed in semicircle RTQ (centered at S). Such a triangle is always a right triangle.

Ray is x years old. His brother Ron is y years older than Ray.

What will the sum of their ages be in 5 years?

Answers

The sum will be x+y because their ages are variables.
I am not sure but i think its correct

There are twice as many liters of water in one container as in another. If 8 liters of water are removed from each of the two containers, there will be three times as many liters of water in one container as in the other. How many liters of water did the smaller container have to begin with?

Answers

Suppose the # of litres in the small container is 'x'.
This would make '2x' litres of water in the larger container.
After taking 8 litres from both containers, the following equation can be written:

(2x-8) = 3 (x-8)

Open the brackets:

2x-8 = 3x-24

Collect like terms:

x = 16

There were 16 litres in the smaller container

BRAINLIEST FOR CORRECT ANSWER!!! A gift in a cubic box with 12 in. edge lengths needs to be wrapped. How many square inches of wrapping paper will be needed to cover the box?

36 in²

72 in²

144 in²

864 in²

Answers

The answer is (D 864 in2) hope it helps and have a nice day!
12 * 12 = 144

Cubes have 6 faces.

144 * 6 = 864

You would need 864 in^2 of wrapping paper.


[tex] \frac{7x + 21}{x2 + 5x + 6} \div \frac{x + 6}{x + 2} [/tex]

Answers

[tex]Heya \:! \\ \\
given \: expression \: - \\ \\ \frac{7x + 21}{ {x}^{2} + 5x + 6} \div \frac{x + 6}{x + 2} \\ \\ \\ \frac{7x + 21}{ {x}^{2} + 5x + 6} \times \frac{x + 2}{x + 6} \\ \\ \\ \frac{7(x + 3)}{(x + 3)(x + 2)} \times \frac{(x + 2)}{(x + 6)} \\ \\ \\ = \frac{7}{(x + 6)} \: \: \: \: \: ans.[/tex]

Solve the equation and show all work please show steps!!
e/5-14=8

Answers

e/5-14=8
--------------
Simplify
1/5e - 14 = 8
----------------
Add 14 to each side
1/5e-14+14=8+14
1/5e = 22
-------------------
Multiply each side by 5
5 * 1/5e = 22 * 5
e = 110

I need help on this one please

Answers

0.80 euros

1.80-1= 0.80

hope this helps! :)

Find the cardinal number for the following sets.

A​ =​ {102​, 103​, 104​, 105​,..., 155​}      
B​ = ​{102​, 104​, 106​, ​..., 252​}

Answers

Cardinal number, more commonly called cardinality, is the number of members of a given set.

For example, if P={1,4,6}, cardinality is 3 because there are three member in the set.

For A, the numbers run consecutively from 102 to 155, so there are (155-102)+1=54 members.  The cardinality is therefore 54
Similarly, for B={102,...252}, there are (252-102)+1=151 members.  So the cardinality is 151.

PLEASE HELP!!!!!!
Find the value of x with side lengths 7, 9 and a 90 degree angle. PS x is the angle in between the hypotenuse(9) and the adjacent(unknown)

Answers

Here’s my answer, I hope this helps!

HELP!! Adding and subtracting radicals

Answers

1. 8x^3y4 3√xy - The first option
2. 6√5 - The third option
3. 7 5√x^2y - The third option
4. 3√2x-6(3√x) - The third option

Find the mean, median, mode, and range of this data : 49,49,54,55,52,49,55.

Answers

Mean: 315.8
median : Put the numbers in order from smallest to largest and the middle number is the answer.
Mode: 49
Range:6
The mean rounded to the tenths is 51.9

HHEELLPP PLLEEASE I GIVE !BRAINLIEST! PLEASE HELP ME

Answers

Hi!

The y-intercept is (0,10)

The slope is m=7
4a) see the graph

4b) The y-intercept is 10. It is the number of points earned if the trick lasts 0 seconds.

4c) The slope of the line is 7. 7 additional points are earned for each second the trick is held.

What is the difference between the longest and the shortest lengths of string?

Answers

The difference between the longest and the shortest lengths of string

is 3/4 inches.

What is a fraction?

A fraction is written in the form of p/q, where q ≠ 0.

Fractions are of two types they are proper fractions in which the numerator is smaller than the denominator and improper fractions where the numerator is greater than the denominator.

Given, Are 5 fractions [tex]12\frac{5}{8}, 12\frac{3}{4}, 12\frac{7}{8} 13, and 13\frac{1}{8}[/tex].

Now, The greatest fraction is [tex]13\frac{1}{8}[/tex] and the smallest fraction is [tex]12\frac{3}{4}[/tex].

As 7/8 is greater than 3/5.

So, The difference between the longest and the shortest lengths of string

is = [tex](13\frac{1}{8} - 12\frac{3}{4})[/tex].

= (105/8 - 51/4).

= (105 - 102)/4.

= 3/4 inches.

learn more about fractions here :

https://brainly.com/question/10354322

#SPJ2

Pleaseeeee halpppp

Determine how many actual fish food boxes fit in the shipping box. Show your work.

Find the volume of the shipping box using the two methods and show your work:
Packing cubes
Using the volume formula

Explain how both methods provide the same measurement of volume for the shipping box.

Answers

the volume would be 36 9/16
(L•W•H)
hope this helps u have a nice day

Answer:

Number of boxes that will fit =2340

Step-by-step explanation:

The shipping box volume can be calculated by the formula V = Lxwxh ,where L ,w ,h are length ,width  and height of the box.

The length of the shipping box =[tex]3\frac{3}{4} =\frac{15}{4} ft.[/tex]

Width = 3 ft.

Height =[tex]3\frac{1}{4} =\frac{13}{4} ft.[/tex]

Volume of shipping box =[tex]\frac{15}{4} .3 .\frac{13}{4} =\frac{585}{16} = 36.6 ft[/tex].cubic ft.

Volume of shipping box can also be calculated by multiplying base area with the height of box.

Base area of box = [tex]\frac{15}{4} .3=\frac{45}{4} square ft.[/tex]

Volume of box = base area x height =[tex]\frac{45}{4} .\frac{13}{4} = 36.6 cubic ft.[/tex]

Volume of packing cubes =[tex]\frac{1}{4} .\frac{1}{4} .\frac{1}{4} =\frac{1}{64}[/tex] cubic ft.

Number of fish boxes that will fit in the shipping box = volume of shipping box ÷ volume of fish food box = 36.6 ÷ [tex]\frac{1}{64}[/tex] =2340 .

What percent of 120 is 78?

Answers

78/120 = 0.65

0.65 = 65%

Hope this helped☺☺
65% since 78/120 is .78 and when moving from decimal to percent you move the decimal place two times to the right
hope this helps

how do u write 0.16 in words

Answers

zero and sixteen tenths
There are no decimal words. As a fraction it would be , Sixteen Hundredths.

graph the linear equation find three points that solve the equationm then plot on the graph 2y=5x+11

Answers

(-1,3)
(0,5.5)
(-2.2,0)

Answer:

(-1,3) (-3,-2) (-5,-7)

Step-by-step explanation:

In the neighborhood park there is a circular grassy picnic area but half of the grass has died the city wants to replace the grass but needs to know the square footage of the damaged area if the circular picnic area is 150 feet across what is the square footage of the damaged area

Answers

answer b

Step-by-step explanation:

What is (-102.75) divided by (-3) rounded to the nearest hundredth

Answers

34.75 If you have two negative if will automatically becaome positive but only in multiplication and division.So you just divide the 3 into 102.75 which give you 34.75.

Answer:

34 .25.

Step-by-step explanation:

Given  :  (-102.75) divided by (-3).

To find : value rounded to the nearest hundredth.

Solution : We have given   (-102.75) divided by (-3).

On dividing

[tex]\frac{-102.75}{-3}[/tex].

⇒ 34 .25

It is already nearest hundredth.

Therefore,  34 .25.

A restaurant used 3 pounds of potatoes during a lunch rush. If they used 3/8 as much beef, how many pounds of beef did they use?

Answers

The restaurant used 3 pounds of potatoes, 3/8 of that would be 1.125. Thus, the restaurant used 1.125 pounds of beef during the lunch rush.

Final answer:

To find the amount of beef used when the restaurant used 3 pounds of potatoes during a lunch rush and used 3/8 as much beef, simply calculate 3 pounds * 3/8 to determine the amount of beef used, which is 1.125 pounds.

Explanation:

The restaurant used 3 pounds of potatoes during a lunch rush. If they used 3/8 as much beef, we can find the amount of beef used:

Calculate how much beef is equivalent to 3 pounds of potatoes: 3 pounds * 3/8 = 9/8 = 1.125 pounds of beef.

Therefore, the restaurant used 1.125 pounds of beef during the lunch rush.

The supplement of an angle has a measure that is 20 degrees more than twice the measure of an angle , x degrees. Which equation can be used to find the value of x?

A) 2x + 20 = 90
B) 2x + 20 = 180
C)(2x + 20) + x = 90
D)(2x + 20) + x = 180

Please Help Me

Answers

Selection D is appropriate.

_____
I would write it differently.
.. 180 -x = "supplement of an angle"
.. 2x +20 = "20 more than twice the measure"
These are said to be equal, so I would write it as
.. 180 -x = 2x +20
Of course, adding x to both sides of this equation makes it
.. (2x +20) +x = 180 . . . . . . matches selection D

please help i will mark brainliest and explain

Answers

3^0 is 1.
5^2 is 5 times itself 1 times, which is 5 x 5, which 25.
1+25=26. Meaning that choice A is best.

3^0 = 1 (Anything to the power 0 is 1)
5^2 = 25
1 + 25 = 26

zayna is putting ribbon around a picture of her dog the picture is 300 mm wide and 150 mm tall how many meters of ribbon will she need

Answers

Answer is 0.9m of Ribbon

2(300mm) + 2(150mm)

600mm + 300mm = 900mm

900mm = 0.9m

5/6 x2 1/5 will be _________21/5

Will it be grater then,
less then
or equal to

Thank you for your help

Answers

Hello There!

You need to find out which fraction is greater.

First, you need to solve 5/6 x 2 1/5
--------------------------------------------------------------
                         [tex]Solving[/tex]
--------------------------------------------------------------

                         5 x 11 =  55
                      -------------  ----   Simplified is   1 5/6
                         6 x 5 =    30
------------------------------------------------------------------
                     The LCD [ Least Common Denominator ] is 30. 
                 so, 55/30 & 126/30
                 
             Therefore, 1 5/6 is less than 21/5
 
      Hope this helped!
          

find the total surface area of the pyramid

Answers

To find the surface area of a pyramid, we need to find the area of all the faces and add them up. 

4 * 6 = 24
24 / 2 = 12

There are four sides (not including the base) in this pyramid, so we should multiply this by 4. 

12 * 4 = 48

Now, we find the area of the base.

6 * 6 = 36

We add up all of the numbers:

48 + 36 = 84

84 in^2 is the answer. 

Hope this helps!

Help with #11, show work!

Answers

To figure it out, add 50 and 35 together to get 85. 
Add 10 and 7 together to get 17. 
Divide 85 by 17 to get 5. 
The missing number is 5. 
hope this helps!

Please help with the ones I circled for brainliest! thank you so much

Answers

1) Subtract the upper right 10 ft square from the overall 18 ft square.
.. (18 ft)^2 -(10 ft)^2 = 224 ft^2

3) The area of this is the sum of the areas of a rectangle 11 in by 7 in, and a triangle with base 7 in and height 5 in.
.. (11 in)*(7 in) +(7 in)*(5 in)
.. = (7 in)*(11 in +2.5 in) = 94.5 in^2

4) The central rectangle is 10 cm by 14 cm; the remaining triangle has a height of 7 cm and a base of 24 cm.
.. (10 cm)*(14 cm) +(24 cm)*(7 cm)/2
.. = 140 cm^2 +84 cm^2
.. = 224 cm^2

Where does Point A And B go? Marking brainliest

Answers

see the attached picture for the answers:
Hello there!

If the area would be 36, then we do 6[tex]*[/tex]6, and from this, it would obviously give us 36. We do (6) square units going up, and when we do this, the area would be 36. (see attachment below).

(point E would be plotted (2,4)) which would be noticed on the graph below this answer.

I hope this was founded helpful. Have an amazing day! :)


Morty buys and sells computer parts he bought two monitors for $25 each and later sold them for 88 each he bought four cases for $15 each and later sold them for $24 each if you buy five memory modules for $20 each and later sold them for $55 each
Morty’s total cost for the items he purchased was?
Morty revenue from the sale of the item was
Morty’s total profit was

Answers

Answer:

Step-by-step explanation:

Cost = 25×2 +15×4+20×5 = $210

Revenue = 88x2+24×4+55×5 = $547

Profit = Revenue - Cost = 547 - 210

Profit = $337

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