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4 years ago

Determine if each expression is equivalent to -2.7 + (-4.9)

Mathematics

2 answers:

PSYCHO15rus [73]4 years ago

8 0

A (-2. 7) -4. 9
B (-2.7+(-.4- 4.5)
Only these A and B are equal to the expression above.

kolezko [41]4 years ago

5 0

Answer:

A and B is equivalent to -2.7+(-4.9)

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What is the range of the equation

a_sh-v [17]

The range of the equation is $y>2$

Explanation:

The given equation is $y=2(4)^{x+3}+2$

We need to determine the range of the equation.

Range:

The range of the function is the set of all dependent y - values for which the function is well defined.

Let us simplify the equation.

Thus, we have;

$y=2 \cdot 4^{x+3}+2$

This can be written as $y=2^{1+2(x+3)}+2$

Now, we shall determine the range.

Let us interchange the variables x and y.

Thus, we have;

$x=2^{1+2(y+3)}+2$

Solving for y, we get;

$x-2=2^{1+2(y+3)}$

Applying the log rule, if f(x) = g(x) then $\ln (f(x))=\ln (g(x))$ , then, we get;

$\ln \left(2^{1+2(y+3)}\right)=\ln (x-2)$

Simplifying, we get;

$(1+2(y+3)) \ln (2)=\ln (x-2)$

Dividing both sides by $\ln (2)$ , we have;

$2 y+7=\frac{\ln (x-2)}{\ln (2)}$

Subtracting 7 from both sides of the equation, we have;

$2 y=\frac{\ln (x-2)}{\ln (2)}-7$

Dividing both sides by 2, we get;

$y=\frac{\ln (x-2)-7 \ln (2)}{2 \ln (2)}$

Let us find the positive values for logs.

Thus, we have,;

$x-2>0$

$x>2$

The function domain is $x>2$

By combining the intervals, the range becomes $y>2$

Hence, the range of the equation is $y>2$

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4 years ago

GIVING BRAINLIEST FOR BEST ANSWER! Write a story that could represent this math problem.

STatiana [176]

Answer:

I have zero clue what the hell this is supposed to be

Step-by-step explanation:

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2 years ago

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Solve using Substitution y = -1x - 5 4x - 8y = 4

Liula [17]

Answers:

Step-by-step explanations:

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3 years ago

Your friend sells half her stock of keyrings every hour. She has 24 boxes at the of the sale. How many boxes will she have left

Law Incorporation [45]

At 0 hours: 24 boxes
After 1 hour: 24/2 = 12 boxes
After 2 hours: 12/2 = 6 boxes
After 3 hours: 6/2 = 3 boxes

She will have 3 boxes after 3 hours.

Hope this helps :)

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3 years ago

Help!!!!!!!!!!!!!!!!!!!

nalin [4]

no clue, man. sorry. i really wish i understood it so i could help you

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3 years ago