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3 years ago

after elsa backed muffins, her brother ate 4 of them, he ate 2/5 of all the muffins, how many muffins did elsa bake?

2 answers:

kondor19780726 [428]3 years ago

6 0

If he ate 4 of them, but it means he ate 2/5 muffins,
4 muffins = 2/5 muffins
You substitute x muffins for how much muffins she baked in all -
2/5* x muffins = 4
2/5 multiply by 2/5 to cross it out. Do the same to the other side.
x= 4 *5/2
x = 10 muffins
So there were 10 muffins in all

Monica [59]3 years ago

3 0

Answer:

2/5m=4 is the equation that would be used to solve the problem :)

Step-by-step explanation:

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3 years ago

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Triss [41]

1 is in the one-tenths place. If 2 was in this spot, it would be two-tenths.

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ANSWER:
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6 0

3 years ago

Read 2 more answers

Let f ( x ) = 10 x + 14 f − 1 ( x ) =

Agata [3.3K]

Answer:

f^-1(x) = (x -14)/10

Step-by-step explanation:

You can find the inverse function by solving for y:

x = f(y)

Here, that is ...

x = 10y +14 . . . . . use the definition of f(y)

x -14 = 10y . . . . . . subtract 14

(x -14)/10 = y . . . . divide by the coefficient of y

So, your inverse function is ...

f^-1(x) = (x -14)/10

6 0

3 years ago

What's the area of a circle with diameter 18 units? Question 8 options: A) 9π units2 B) 81π units2 C) π units2 D) 18π units2

Anna [14]

Answer:

B) 81π units²

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Radius of a Circle Formula: r = d/2

r is radius
d is diameter

Area of a Circle Formula: A = πr²

Step-by-step explanation:

Step 1: Define

Diameter d = 18 units

Step 2: Manipulate Variables

Radius r = 18 units/2 = 9 units

Step 3: Find Area

Substitute in r [Area of a Circle Formula]: A = π(9 units)²
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[Area] Multiply: A = 81π units²

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2 years ago

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andrezito [222]

Answer:

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Step-by-step explanation:

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