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3 years ago

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Mathematics

2 answers:

kolezko [41]3 years ago

5 0

Answer:

$3.49 for 15oz is best buy

Step-by-step explanation:

3.49 divided by 15 = about 0.23

$0.23 for 1 oz

2.75 divided by 11 = 0.25

$0.25 for 1 oz

So $3.49 for 15oz is best buy

Simora [160]3 years ago

4 0

Answer: 10

Step-by-step explanation:

add 2.75 to 0

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After the holidays, Christmas decorations are marked down 60%! If Mr. Buchser wanted to buy an inflatable snowman for the front

Dmitry_Shevchenko [17]

$160* 0.6= 96
160-96= $64
The snowman cost $64

3 0

3 years ago

Krutika, David and Mark share some sweets in the ratio

Aneli [31]

Answer:

120

Step-by-step explanation:

Krutika:48

David: 48

Mark: 48÷2= 24

Because 2 : 2 : 1

48+48+24=120

3 0

3 years ago

Solve the system by substitution.<br> 4y =<br> 5x -10y =-50

Trava [24]

Answer:

$x = -20 ; y =-5$

Step-by-step explanation:

Eqn. 1 ----> 4y = x

Eqn. 2 ----> 5x-10y = -50

(Simplifying eqn.2 further)

$=>5(x-2y)=-50$

$=>x-2y=\frac{-50}{5} =-10$

(Substituting the value of x from eqn. 1)

$=>4y-2y=-10$

$=>2y=-10$

$=>y =\frac{-10}{2} =-5$

Now, substituting the value of y in eqn. 1 ,

$x = 4*(-5)=-20$

7 0

3 years ago

In the cafeteria 100 milk cartons were put out and 27 remained..what is the ratio of milk cartons taken to total milk cartons?

True [87]

If they started with 100 and 27 remained, then (100 - 27) = 73 were taken.

ratio of milk cartons taken to total milk cartons = 73/100 or 73:100 or 73 to 100

8 0

3 years ago

If the population of a particular country is growing at 3.2 % compounded continuously, how long will it take the population to

Lisa [10]

Answer:

It will take 34.33

Step-by-step explanation:

* Lets talk about the compound continuous growing

- Compound continuous growing can be calculated using the formula:

$A=Pe^{rt}$

# A = the future value

# P = the initial amount

# r = the growing rate in decimal

# t = the time

* Lets solve the problem

- The population of a particular country is growing at 3.2 %

compounded continuously

∴ r = 3.2/100 = 0.032

- We need to find how long will it take the population to triple

∵ The initial population is P

∴ A = 3P

∵ $A=Pe^{rt}$

∴ $3P=Pe^{0.032t}$

- Divide both sides by P

∴ $3=e^{0.032t}$

- Insert ㏑ for both sides

∴ $ln(3)=ln(e^{0.032t})$

- Remember $ln(e^{n})=n$

∴ ㏑(3) = 0.032t

- Divide both sides by 0.032

∴ t = ㏑(3)/0.032 = 34.33

* It will take 34.33

8 0

3 years ago