you are buying decorations for a birthday party. the before tax total for 3 rolls of crepe paper and 20 balloons is $11.40. after you start decorating, you need more supplies. you buy 2 more rolls of crepe paper and 10 more balloons for $7.20 before tax. how much did each cost?

please help with an explanation.

Answers

Answer 1

Answer & Step-by-step explanation:

Let's have

C = Creepers

B = Balloons

1) 6C + 20B = 11.9  

2) 2C + 15B = 6.05

Eliminate

16C + 20B = 11.9 x3  

-2C + 15B = 6.05 x4

18C + 60B = 35.7  

-8C + 60B = 24.2

10C/10 = 11.5/10  

C = 1.15


Related Questions

HELP PLEASE 30 POINTS!!​

Answers

Answer:

p - w = $25 OR w + $25 = p

Step-by-step explanation:

pencil = p

pen = w

p - w = $25 OR w + $25 = p


Ms. Merry spent a total of $33.42 to buy 6 books. Each book was the same price. Which expression should be used to estimate the cost of
each book?

Answers

Answer:

down below

Step-by-step explanation:

36/ 6 = 6

real answer is 5.57

Solve the following equation: 4(x + 2) - 17 = 35
A: -11
B: 25/2
C: 15
D: 11

Answers

Answer:

D: 11

Step-by-step explanation:

4(x + 2) - 17 = 35

4x+8 - 17=35

4x-9=35

4x=35+9=44

x=44/4=11

the answer is D, the working out is in the photo

A circle has a diameter of 28 feet. What is the
circumference of the circle?

Answers

Answer:

14

Step-by-step explanation:

the answer is 87.96 ft

The expression 15h + 216 represents the approximate amount of money a family spends at an amusement park in a day, where h is number of hours the family stays at the park. About how much can a family expect to spend if it stays 6.5 hours?

Please help!

Answers

Answer: $313.50

Step-by-step explanation:

Write the equation of the line given a slope of 0 through the point (5, -7)

Answers

Answer:

y=-7

Step-by-step explanation:

y-y1=m(x-x1)

y-(-7)=0(x-5)

y+7=0

y=0-7=-7

Does y=-2x represent a function

Answers

yeah
.......................

3(2c-5)

the options are
-6c-15
6c+15
6c-15

Answers

Answer:

6c-25

Step-by-step explanation:

comon man lol that's eays

Answer:

Answer would be the last one 6c-15

Step-by-step explanation:

Use distributive property!

the number outside the () times the numbers inside the ()

25.37 x 3.8
pls help

Answers

Answer:

96.406 :)

Step-by-step explanation:

Answer:

calculator

Step-by-step explanation:

i

I have a spinner that is divided into 4 equal sections colored red, blue, green, and yellow .If I spin the spinner twice ,What is the probability that the spinner will land on yellow both times ?

Answers

Answer:

is of 25%

Step-by-step explanation:

The probability that the spinner will land on yellow both times is 1/16.

What is probability?

Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.

Given, A spinner is divided into 4 equal sections colored red, blue, and green.

So, N(S) = 4 and N(R) = 1, N(B) = 1, N(G) = 1 and N(Y) = 1.

Conditional probability is a term used in probability theory to describe the likelihood that one event will follow another given the occurrence of another event.

As the events of getting yellow both times is independent,

The likelihood that the spinner will hit yellow twice is,

P(Y, Y) = P(Y)×P(Y).

P(Y, Y) = (1/4)×(1/4).

P(Y, Y) = 1/16.

learn more about probability here :

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Given the diagram shown below, state the measurement of 4MKD.
15
K
2)
32
D

Answers

Answer:

MKD = 57

Step-by-step explanation:

15+32

hope it helps you ☺️

Lauren ran the 400-meter dash in fifty-three and ten hundredths seconds. How
should this decimal be written correctly?



A: . 5310

B: 53.10

C: 53.01

Answers

Answer:

B

Step-by-step explanation:

Im not quite sure but i think it is b i hopeitcan help you!

Write the linear equation in slope-intercept form given the following:

Slope=2/3 ; y-intercept=-1

Answers

Answer:

y = 2/3x -1

Step-by-step explanation:

since the slope is m=2/3 and the line is intersepting at negative 1

the equasion is as follow:

y = 2/3x -1

Good luck.

FB: sharp4math

pls help it’s 30 points :)

Which mathematical sentence matches the story?
A school is holding a cake sale to raise money. They are selling cakes for $1 each and soft
drinks for $.50 (50 cents) each. How many cakes and drinks do they have to sell to make
at least $100?

Answers

Answer: they will need to sell 1,000 soft  drinks and 50 cakes

Step-by-step explanation:

Hey I'm Chloe, Can you help me, Thank you :)
I need Help with Math:
-3A +2 ( 5- 2A) = - 11
* I think The answer is A= 3, But I'm not sure*

Answers

Answer:

There is no question just a equation.

Step-by-step explanation:

I'm not sure.

Answer:

You are indeed correct, A=3

Step-by-step explanation:

A principal of $2900 is invested at 6.25% interest, compounded annually. How much will the investment be worth after 14 years?

Answers

Answer:

$6774.4

Step-by-step explanation:

Given data

P=$2900

r= 6.25%

t= 14 years

A=???

The compound interest formula is given as

A=P(1+r)^t

substiute

A= 2900(1+0.0625)^14

A= 2900(1.0625)^14

A= 2900*2.336

A= $6774.4

Hence the final amount is $6774.4

In a family of 6 children what is the probability there are exactly 4 girls?

Answers

Answer:

sonn 12 laalkznjsnl nalslaonhfj. alallkzhdbb nLaojahdnldl

What is the equation of the line that passes through (5,-3) and (3,7)

Answers

Answer:

-5x +22

Step-by-step explanation:

un numero aumentado en 5

Answers

Answer: x + 5

Step-by-step explanation:

What is the sum of the interior
angle measures of a polygon
that has 15 sides?
Sum = [?]°
Hint: Sum = (n-2)180
Enter
Corporation. All Rights Reserved

Answers

n is the amount of sides
sum=13 times 180 =2340

PLEASE HELP IT'S TIMED
Order from least to greatest 0, -1.9, -1 4/5, -1/3, and 0.25

Answers

Answer:

0.25, 4/5, 1/3, 1.9 and you answer mine please

Answer:

-1.9,-1 4/5, -1/3, 0, .25

Step-by-step explanation:

2 /8 The Math Club’s spring banquet was a huge success, and Ray and Aletha are calculating the tip. The total bill was $360. What is the amount of tip that Ray and Aletha if they leave a 20% tip? $50 $542 $72 $56

Answers

Answer:

$72

Step-by-step explanation:

im guessing

What 3-dimensional figure can be created by folding the shape shown below on the dotted lines?

Answers

Answer:

A triangle

Step-by-step explanation: The two squares lean against each other

The prism can be created by folding the shape on the dotted lines.

What is net?

"It is a pattern of a figure on the figure that can be folded to form the three-dimensional geometric structure."

What is a triangular prism?

"It is a prism that made up of two triangular bases and three rectangular sides."

What is cube?

"It is a three-dimensional geometric structure, which has six square faces."

What is pyramid?

"It is three dimensional geometric structure which has a polygonal base and triangular lateral sides."

For given example,

We have been given a net of a three-dimensional figure.

The net consists of three squares and two triangle.

If we create a three-dimensional structure by folding the shape on the dotted lines, then it would be a triangular prism.

As we know the triangular prism consists of three rectangular / square sides and two triangular bases.

Therefore, the prism can be created by folding the shape on the dotted lines.

Learn more about the net here:

https://brainly.com/question/12032061

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A line is parallel to y = -3x + 2 and
intersects the point (4,3). What is the
equation of this parallel line?
y = [?]x + [ ]

Answers

Answer:

y=-3x+15

Step-by-step explanation:

Which of the following shows the correct solution steps amd solution to 7x-4=-18

Answers

Answer:

D

Step-by-step explanation:

7x - 4 = -18            (add 4 to both sides)

7x = -14                  (divide both sides by 7)

x = -2

the answer is D

Solve the system of equations
Y = 2x
X - Y = 10


Answers

Answer:

x=-10, y=-20

Step-by-step explanation:

first you substiture the y in the second equation with the first

x-2x=10

then solve

1x-2x=-1

-x=10

multiply both sides by a negative to make the varible a

positive

x=-10

now we substitue the x in the first equation with -10

y=2(-10)

y=-20

A system of equations is shown below what is the x- value of the system of equations y= -4..... 2x-3y=8

Answers

Answer:

x= -2

Step-by-step explanation:

choose all the equations that are true if x=9
A. x÷27=24
B. 3/8x =3 3/8
C. 8.7+x=17
D. 5x=45​

Answers

Answer:yr

Step-by-step explanation:rt5r

D it’s the answer !!

(7, -1) and (21, -5) as a equation

Answers

Answer:

this isn't the answer to this but this is the answer to your other question, its -7.4, -4, 0.2, 1/2, 7.4

Step-by-step explanation:

if you have three apples and john takes 1 how many do you have

Answers

Answer:

you got two apple left I hope this helps

you would have 2 left
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