Alyssa bought a soft drink of four dollars and seven candy bars. She spent a total of 39 dollars. How much did each candy bar cost?

Answers

Answer 1

Answer: answer is $5. if the drink was $4 and the total was $39 then subtract 39-4 u get 35. then do 35/7 because there are 7 bars, and we wanna figure out of much THOSE where, thus is why we subtracted 4.

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Dmitri wants to cover the top and sides of this box with glass tiles that are 1 cm square. How many tiles will he need?The dimensions are 23 cm, 12 cm, and 7 cm.

The store paid $4.50 for a book and sold it for $7.65. What is the profit as a percent of the cost to the store?

Answers

Answer:

3.00 i think

Step-by-step explanation:

Answer:

$4.00

Step-by-step explanation:

Carlotta is making blue and orange necklaces in several lengths. For each necklace, her ratio of blue beads to orange beads is 3 to 2. How many orange beads will Carlotta need for a necklace of 60 beads?

Answers

Answer:

Carlotta needs 24 orange beads for her necklace.

Step-by-step explanation:

For each necklace, the ratio of blue beads to orange beads is 3 to 2. or 3:2

Total beads given to make a necklace is = 60

Let the number of orange beads be = x

The ratio is 2 orange beads out of 5 total beads

So, we can represent the ratio as:

$(2)/(5)=(x)/(60)$

$5x=120$

x=24

Hence, Carlotta needs 24 orange beads for her necklace.

Blue beads needed = $60-24=36$

We can also check the ratio for blue beads to orange beads:

$(36)/(24)$

Divide by 4, we get

$(9)/(6)$

Divide by 3, we get

$(3)/(2)$ ...... (the given ratio)

Therefore, Carlotta needs 24 orange beads for her necklace.

5x=60
x=12
2x=24

......

Frances is sewing a border around 2 rectangular tablecloths that each measure 9 feet long by 6 feet wide. If it takes her 3 minutes to sew on 1 inch of border, how many minutes will it take her to complete her sewing project? Write an expression, and then solve.

Answers

2,160 minutes

Further explanation

Given:

Frances is sewing a border around 2 rectangular tablecloths that each measure 9 feet long by 6 feet wide.
It takes her 3 minutes to sew on 1 inch of the border.

Question:

How many minutes will it take her to complete her sewing project?
Write an expression, and then solve it.

The Process:

The following are the steps to form the expression.

Perimeter of a rectangle: $\boxed{2 * (9 + 6)}$
The total perimeter of the two rectangles: $\boxed{2 * 2 * (9 + 6)}$
Converting feet to inches: $\boxed{2 * 2 * (9 + 6) * 12}$
She takes 3 minutes to sew on 1 inch of the border of a tablecloth, therefore we can write an expression as follows: $\boxed{\boxed{ \ 2 * (2 * (9 + 6 )) * 12 * 3 \ }} \ in \ minutes$

Let us solve the expression.

$\boxed{\ 2 * (2 * (9 + 6 )) * 12 * 3 \ } \ in \ minutes$

$\boxed{\ = 2 * (2 * 15) * 12 * 3 \ } \ in \ minutes$

$\boxed{\ = 2 * 30 * 12 * 3 \ } \ in \ minutes$

$\boxed{\ = 720 * 3 \ } \ in \ minutes$

Thus she takes 2,160 minutes to complete her sewing project.

- - - - - - - - - -

The following are the complete steps.

Step-1:calculating the total perimeter of the border around 2 rectangular tablecloths

Recall the perimeter of a rectangle.

$\boxed{ \ Perimeter = 2 * (length + width) \ }$

$\boxed{ \ Perimeter = 2 * (9 + 6) \ }$

$\boxed{ \ Perimeter = 2 * 15 \ }$

Hence the perimeter of a rectangular tablecloth is 30 feet.

So, the total perimeter of the border around 2 rectangular tablecloths is $\boxed{30 \ feet * 2 = 60 \ feet}$

Step-2:converting feet to inches

Recall that $\boxed{1 \ feet = 12 \ inches \ }$

Let us convert 60 feet to inches.

$\boxed{\ = (12 \ inches)/(1 \ feet) * 60 \feet \ }$

$\boxed{\ = 720 \ inches \ }$

Step-3:calculating minutes will it take her to complete her sewing project

She takes 3 minutes to sew on 1 inch of the border of a tablecloth. There are 2 rectangular tablecloths.

$\boxed{ \ = (3 \ minutes)/(1 \ inch) * 720 \ inches \ }$

$\boxed{ \ = 3 * 720 \ minutes \ }$

$\boxed{\boxed{ \ 2,160 \ minutes \ }}$

Thus she takes 2,160 minutes to complete her sewing project.

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Keywords: Frances is sewing, a border, around, 2 rectangular tablecloths, that each measure 9 feet long by 6 feet wide, takes, 3 minutes to sew, 1 inch of border, how many, minutes, to complete her sewing project, write an expression, to solve it

The perimeter of a rectangle is - 2 x (length + breadth).

Also, 1 feet = 12 inches.

So, the dimensions of the tablecloth are 108 inches long by 72 inches wide. So, the total perimeter of the table cloth is --> 2 x (108 + 72) = 360 inches.

So, time taken for 1 tablecloth = 360 x 3 = 1080 minutes.

And, Time taken for 2 tablecloths = 1080 x 2 = 2160 minutes.

So, to complete her sewing project, Frances will take a total of 2160 minutes (36 hours).

Harry is looking for a fish tank with a volume of 100 cubic meters. He is looking at a tank with the following dimensions 2.4 meters long. 5.5 meters wide and 6.5 meters tall. Should he buy this tank? Why or why not?

Answers

Answer:

i dont think he should buy that tank.

Step-by-step explanation:

the volume is

2.4 × 5.5 × 6.5 = 85.8

if he is looking for a volume of 100 cubic meters, this tank isnt 100 meters cubed its only 85.6 meters cubed.

so i think the answer is No

What is (5x^2+x-3)-(-2^3+4)

Answers

I love this! :3

5x^2+x−3−(−2x^3+4)

5x^2+x+−3+−1(−2x^3)+(−1)(4)

5x^2+x+−3+2x^3+−4

(2x^3)+(5x^2)+(x)+(−3+−4)

And we're left with 2x^3+5x^2+x−7

a(b+c)=ab+ac
distribute invisible -1
5x^2+x-3+2x^3-4
group like terms
2x^3+5x^2+x-3-4
2x^3+5x^2+x-7

For a field trip 20 students rode in cars andthe rest filled nine buses. How many
students were in each bus if 236 students
were on the trip?

Answers

Answer:

11 with a remainder of 16

Step-by-step explanation:

just divide boy or girl

it is 11 students in the bus

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