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Murljashka [212]
3 years ago
14

Find the solution to x2=28

Mathematics
2 answers:
HACTEHA [7]3 years ago
8 0

Answer:14

Step-by-step explanation:

bekas [8.4K]3 years ago
7 0

x² = 28

x = √28

Factoring 28

28 | 2

14 | 2

7 | 7

1

28 = 2.2.7 = 2².7

x = √2².7

x = 2√7

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Could you please provide the answer as well as explain it, I will be very grateful...
Vilka [71]
Hello,

There is a mistake: it is 816 cm² !!! (an area)

length are multiplied by 2,
so area are mutiplied by 2²=4
Area B=816*4=3264 (cm²)


7 0
2 years ago
Unit activity: exponential and logarithmic functions
nirvana33 [79]

We will conclude that:

  • The domain of the exponential function is equal to the range of the logarithmic function.
  • The domain of the logarithmic function is equal to the range of the exponential function.

<h3>Comparing the domains and ranges.</h3>

Let's study the two functions.

The exponential function is given by:

f(x) = A*e^x

You can input any value of x in that function, so the domain is the set of all real numbers. And the value of x can't change the sign of the function, so, for example, if A is positive, the range will be:

y > 0.

For the logarithmic function we have:

g(x) = A*ln(x).

As you may know, only positive values can be used as arguments for the logarithmic function, while we know that:

\lim_{x \to \infty} ln(x) = \infty \\\\ \lim_{x \to0} ln(x) = -\infty

So the range of the logarithmic function is the set of all real numbers.

<h3>So what we can conclude?</h3>
  • The domain of the exponential function is equal to the range of the logarithmic function.
  • The domain of the logarithmic function is equal to the range of the exponential function.

If you want to learn more about domains and ranges, you can read:

brainly.com/question/10197594

3 0
1 year ago
Evaluate the following expression<br> 1/5^-2
Kitty [74]

Answer:

25

Step-by-step explanation:

If (1/5)^2 equals 1/25, then (1/5)^-2 should be the opposite.

(1/5)^-2 equals 25

6 0
2 years ago
I want to cancel my subscription effective immediately !!!
krok68 [10]

Lol, wydm???????????????????

6 0
3 years ago
The amount of gas that a helicopter uses is directly proportional to the number of hours spent flying. The helicopter flies for
dezoksy [38]

Answer: 44 gallons

Step-by-step explanation:

Using proportion,

33 gallons = 3hours

X = 4hours

Cross multiply

3 × X = 33 × 4

3X = 132

Divide bothside by 3

3x/3 =132/3

X = 44

Therefore the helicopter uses 44gallons for 4 hours.

3 0
3 years ago
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