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3 years ago

Evaluate: 5–^2 = WILL MARK AS BRAINLIEST

Mathematics

2 answers:

Elanso [62]3 years ago

4 0

When you have a negative exponent, you move it to the other side of the fraction to make the exponent positive.

For example:

$x^{-2}$ or $\frac{x^{-2}}{1}=\frac{1}{x^2}$

$\frac{1}{y^{-2}}=\frac{y^2}{1}$ or y²

So:

$5^{-2}=\frac{1}{5^2}=\frac{1}{25}$

Your answer is B

goldenfox [79]3 years ago

4 0

Answer:

Yea the answer is B good luck.

Step-by-step explanation:

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Write each expression as an algebraic (nontrigonometric) expression in u, u > 0.

max2010maxim [7]

Answer:

$\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)=\frac{20\sqrt{u^2-100}}{u^2}\text{ where } u>0$

Step-by-step explanation:

We want to write the trignometric expression:

$\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)\text{ where } u>0$

As an algebraic equation.

First, we can focus on the inner expression. Let θ equal the expression:

$\displaystyle \theta=\sec^{-1}\left(\frac{u}{10}\right)$

Take the secant of both sides:

$\displaystyle \sec(\theta)=\frac{u}{10}$

Since secant is the ratio of the hypotenuse side to the adjacent side, this means that the opposite side is:

$\displaystyle o=\sqrt{u^2-10^2}=\sqrt{u^2-100}$

By substitutition:

$\displaystyle= \sin(2\theta)$

Using an double-angle identity:

$=2\sin(\theta)\cos(\theta)$

We know that the opposite side is √(u² -100), the adjacent side is 10, and the hypotenuse is u. Therefore:

$\displaystyle =2\left(\frac{\sqrt{u^2-100}}{u}\right)\left(\frac{10}{u}\right)$

Simplify. Therefore:

$\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)=\frac{20\sqrt{u^2-100}}{u^2}\text{ where } u>0$

4 0

3 years ago

Which function has a greater y-value if x=2<br> Blue<br> Red<br> S

-Dominant- [34]

Red has a greater value.
Blue = -2
Red = 3

8 0

3 years ago

**POINTS**Find the values of X and y

Andrej [43]

Answer:

y=105 for x

y=75

Step-by-step explanation:

2y-30=180 180 (straight line) 180-105=75

+30 +30

2y=210

/2 /2

7 0

2 years ago

Find 6 times as many as 2 divided by 6

scoundrel [369]

Rewrite this symbolically: 6(2/6) = 12/6 = 2 (answer)

An equally good approach would be to cancel the 6's, obtaining 2 (answer)

3 0

3 years ago

Read 2 more answers

I need help solving 11 3/4 minus 8 2/10

melomori [17]

Answer:

The answer is 3 11/20

Step-by-step explanation:

Subtract whole numbers, 11 - 8 = 3

Then combine fractions 3/4 - 2/10= 11/20

hope this helps! :D

4 0

3 years ago