Which of the following could a be equal to? 4a=28 A.24 B.4 C.7 D.-7

11

JulijaS [17]

Answer:

B. 1 + ln 2 - ln x

General Formulas and Concepts:

Algebra II

Natural logarithms ln and Euler's number e
Logarithmic Property [Multiplying]: $\displaystyle log(ab) = log(a) + log(b)$
Logarithmic Property [Dividing]: $\displaystyle log(\frac{a}{b}) = log(a) - log(b)$

Step-by-step explanation:

Step 1: Define

Identify

$\displaystyle ln(\frac{2e}{x})$

Step 2: Simplify

Expand [Logarithmic Property - Dividing]: $\displaystyle ln(\frac{2e}{x}) = ln(2e) - ln(x)$
Expand [Logarithmic Property - Multiplying]: $\displaystyle ln(\frac{2e}{x}) = ln(2) + ln(e) - ln(x)$
Simplify: $\displaystyle ln(\frac{2e}{x}) = ln(2) + 1 - ln(x)$
Rewrite: $\displaystyle ln(\frac{2e}{x}) = 1 + ln(2) - ln(x)$

4 0

3 years ago

*If you add two integers with different signs, how can you tell whether the sum will be positive, negative, or zero?

irina [24]

Answer:

Please see explanation

Step-by-step explanation:

When two integers are being added there can be three cases in the answer

Positive

The sum will be positive if both the integers are positive and in case of addition of one positive and negative integer, the sum will be positive if the integer with larger magnitude is positive

Negative

The sum will be negative if both integers are negative and in case of addition of one positive and negative integer, the sum will be negative if the integer with larger magnitude is negative

Zero

The sum will be zero if both the integers have same magnitude and different signs.

7 0

3 years ago

Please answer I will mark you Brainiest A cheetah runs at 65 miles per hour. Which equation represents his speed if y is the

Pepsi [2]

Answer:

x=65x

Step-by-step explanation:

This is because he is running 65 miles an hour and x is hours. Y= how far he runs so you would have to use this equation to see how far he goes.

5 0

3 years ago

Read 2 more answers

A family has three children and the number of girls is recorded assume an equal chance of a boy or girl for each birth

nirvana33 [79]

Answer:

P(A)=P(all boys)

≈

1

8

P(B)=P(all boys or all girls)

≈

1

4

P(C)=P(2 boys or 2 girls)

≈

3

4

P(D)=P(at least 1 of each gender)

≈

3

4

3 0

3 years ago

What is the value of this expression when 12-1 and y=22 42

lubasha [3.4K]

Answer:

11

Step-by-step explanation:

12-1=11

7 0

3 years ago

Read 2 more answers