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3 years ago

Write log2 0.25 = -2 in exponential form

Mathematics

1 answer:

oee [108]3 years ago

6 0

Answer:

0.25 = 2^-2

The "^" means that -2 is an exponent on top of 2.

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Lerok [7]

Answer:

Step-by-step explanation:

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2 years ago

A=4pi r^{2} solve for r

lara [203]

A = 4πr² Divide both sides by 4π
A / 4π = r² Find the square root of both sides
√(A / 4π) = √(r²) Cancel out the square with the square root
√(A / 4π) = r Switch the sides to make it easier to read
r = √(A / 4π)

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2 years ago

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velikii [3]

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2 years ago

Find the original price if the sale price of the cell phone is $205.50

Arlecino [84]

Answer:

$293.6

Step-by-step explanation:

Here is the complete question: A cell phone is on sale for 30% off. Find the original price if the sale price of the cell phone is $205.50.

Given: Sale price of cell phone is $205.50

Discount= 30%

As 30% discount is given on original price or we can say 70% of original price is $205.50.

∴ Let the original price be x.

⇒ $\frac{70}{100} \times x= 205.50$

Now, cross multiplying both side.

⇒ $x= \frac{100}{70} \times 205.5$

∴ x= $293.6

The original price of cell phone is $293.6.

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3 years ago

Evaluate the expression. (21÷7) +6 + 3³

spin [16.1K]

Answer: 36.
Solve in order of PEMDAS - parentheses, exponents, multiplication, division, addition and subtraction. 21/7= 3. 3^3 is 3*3*3=27. 3+ 6 + 27= 36.

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3 years ago

Write log2 0.25 = -2 in exponential form​

Write log2 0.25 = -2 in exponential form