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3 years ago

A bakery offers a sale price of $2.75 for 4 muffins. What is the price per dozen?

Mathematics

2 answers:

skelet666 [1.2K]3 years ago

4 0

4 muffins is $2.75
4*3=12
1 dozen is 12

2.75 * 3 =$ 8.25

lisabon 2012 [21]3 years ago

3 0

$8.25 4 muffins are for 2.75 and 4*3 is 12 so basically you could just do 2.75*3

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Solve the following equation for X: 1/2(5x+12)=2x-3 show your work

Debora [2.8K]

1/2(5x + 12) = 2x - 3
5/2 x + 6 = 2x - 3
5/2 x - 2x = -3 - 6 = -9
5x = 2 x -9 = -18
x = -18/5

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2 years ago

2.The number of grams A of a certain radioactive substance present at time, in yearsfrom the present, t is given by the formulaA

professor190 [17]

Answer:

Given that,

The number of grams A of a certain radioactive substance present at time, in years

from the present, t is given by the formula

$A=45e^{-0.0045(t)}$

a) To find the initial amount of this substance

At t=0, we get

$A=45e^{-0.0045(0)}$ $A=45e^0$

We know that e^0=1 ( anything to the power zero is 1)

we get,

$A=45$

The initial amount of the substance is 45 grams

b)To find thehalf-life of this substance

To find t when the substance becames half the amount.

A=45/2

Substitute this we get,

$\frac{45}{2}=45e^{-0.0045(t)}$

$\frac{1}{2}=e^{-0.0045(t)}$

Taking natural logarithm on both sides we get,

$\ln (\frac{1}{2})=-0.0045(t)^{}$ $(-1)\ln (\frac{1}{2})=0.0045(t)$ $\ln (\frac{1}{2})^{-1}=0.0045(t)$ $\ln (2)=0.0045(t)$ $0.6931=0.0045(t)$ $t=\frac{0.6931}{0.0045}$ $t=154.02$

Half-life of this substance is 154.02

c) To find the amount of substance will be present around in 2500 years

Put t=2500

we get,

$A=45e^{-0.0045(2500)}$ $A=45e^{-11.25}$ $A=45\times0.000013=0.000585$ $A=0.000585$

The amount of substance will be present around in 2500 years is 0.000585 grams

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5 months ago

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s344n2d4d5 [400]

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Hope this helps!

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3 years ago

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icang [17]

Answer:

Soccer you use the lease amount of balls and in tennis you use the most

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3 years ago

In order to qualify for a role in a play, an actor must be taller than 64 inches but shorter than 68 inches. The inequality 64 &

max2010maxim [7]

The another way of writing inequality is x > 64 and x < 68

<h3>What is inequality?</h3>

A statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.

As the actor has to be taller than 64 inches, and less than 68 inches.

and we use greater than or less than signs and not greater than or equal to or less than or equal to show the inequality.

hence, x > 64 and x < 68.

Learn more about this concept here:

brainly.com/question/1674182

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1 year ago