4 equals 2 m -5 n 4 m

Mrs. Smith paid $6.60 for a dozen donuts. What is the cost per donut in dollars and cents?

Mekhanik [1.2K]

Answer:

$1.81

Step-by-step explanation:

Dozen donuts cost 6.60 dollars

You will divide 12 by 6.60

you will get 1.81

8 0

3 years ago

Read 2 more answers

During the evaporation

Leto [7]

Answer:

- 0.092g

- 0.979g

- 0.983g

Explanation: 0.83 > 0.979 > 0.092

5 0

3 years ago

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A new car is purchased for 23700 dollars. The value of the car depreciates at

mojhsa [17]

The value of the car after 10 years is $5557.8.

What is depreciation?

Depreciation refers to the reduction in the value of an asset over time and such valued reductions are reflected in the Balance sheet at the year ended.

Given

A new car is purchased for 23700 dollars.

The value of the car depreciates at 13.5% per year.

According to the question,

The value of the car depreciates therefore the amount of the car is determined by the formula,

Where, P = $23700, r = 13.5% and t =10 years

Substitute all the values in the formula,

Hence, the value of the car after 10 years is $5557.8.

To know more about Percentages click the link given below.

brainly.com/question/14675742

8 0

2 years ago

I am so lost, please help

skelet666 [1.2K]

Answer:

$u=\frac{9}{t}-\frac{1}{2} a t$

Step-by-step explanation:

Step 1: Given equation: $9=\frac{1}{2} a t^{2}+u t$

To get u, by subtraction equality property subtract both sides of the equation by $\frac{1}{2} a t^{2}$ .

$\Rightarrow 9-\frac{1}{2} a t^{2}=\frac{1}{2} a t^{2}+u t-\frac{1}{2} a t^{2}$

$\Rightarrow 9-\frac{1}{2} a t^{2}=u t$

Step 2: By division equality property, divide both sides of the equation by t.

$\Rightarrow \frac{9-\frac{1}{2} a t^{2}}{t}=\frac{u t}{t}$

$\Rightarrow \frac{9}{t}-\frac{1}{2} a t=u$

Therefore, $u=\frac{9}{t}-\frac{1}{2} a t$ .

So, in Emily’s physics class, she got $u=\frac{9}{t}-\frac{1}{2} a t$ .

7 0

3 years ago

What is the slope / rate of change for 2, 5 and -3, 7

Nady [450]

Answer:

$\displaystyle m=\frac{-2}{5}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS 

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (2, 5)

Point (-3, 7)

Step 2: Identify

x₁ = 2, y₁ = 5

x₂ = -3, y₂ = 7

Step 3: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m=\frac{7-5}{-3-2}$
[Slope] [Fraction] Subtract: $\displaystyle m=\frac{2}{-5}$
[Slope] [Fraction] Rewrite: $\displaystyle m=\frac{-2}{5}$

4 0

3 years ago