David invested $220 in a savings account that offers a 3% return on the investment. How many years will the value of David's investment will reach at least $400 ?

Using the Pythagorean Theorem, we find that x = 10.

To find the value of x, we can use the Pythagorean Theorem. The Pythagorean Theorem states that in any right triangle, the square of the hypotenuse is equal to the sum of the squares of the legs.

In this case, the hypotenuse is x, and the legs are 6 and 8. Therefore, we can write the Pythagorean Theorem as follows:

x^2 = 6^2 + 8^2

x^2 = 36 + 64

x^2 = 100

x = sqrt(100)

Therefore, the value of x is 10.

Here is a more detailed explanation of the Pythagorean Theorem:

The Pythagorean Theorem is a mathematical formula that describes the relationship between the three sides of a right triangle. It states that the square of the hypotenuse is equal to the sum of the squares of the other two sides.

In other words, if a right triangle has sides of length a, b, and c, where c is the hypotenuse (the longest side), then the following equation holds:

c^2 = a^2 + b^2

This equation can be used to find the length of any side of a right triangle, given the lengths of the other two sides.

For example, if we know the lengths of the legs of a right triangle, we can use the Pythagorean Theorem to find the length of the hypotenuse. Or, if we know the length of the hypotenuse and one of the legs, we can use the Pythagorean Theorem to find the length of the other leg.

The Pythagorean Theorem is one of the most important theorems in mathematics, and it has many applications in geometry, trigonometry, and physics. It is also used in many real-world applications, such as surveying, construction, and navigation.

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By definition, we have:

Scientific notation, also called pattern or notation in exponential form, is a way of writing numbers that accommodate values too large or too small to be written in a conventional manner.

A number written in scientific notation follows the following pattern:

Where,

m: mantissa

e: order of magnitude

We then have the following number:

0.0008235

Using the definition, we have the number in scientific notation is:

Answer:

0.0008235 in scientific notation is:

The number in scientific notation is,

⇒ 8.235 × 10⁻⁴

We have to give that,

A number to change into scientific notation is,

⇒ 0.0008235

Since Scientific notation is a way of writing very large or very small numbers.

For example; 230,000,000 can be written in scientific notation as

2.3 x 10⁸.

Now, Change the number into scientific notation as,

⇒ 0.0008235

⇒ 8.235 × 10⁻⁴

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Answer:

-6.2

Step-by-step explanation:

Answer:

three plus x?

Step-by-step explanation:

Answer:

three plus ex