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3 years ago

Evaluate (2/5) to the 2nd power

Mathematics

2 answers:

elena-14-01-66 [18.8K]3 years ago

7 0

Answer:

.08

Step-by-step explanation: hope you get it right please give brainiest

have a good day

Effectus [21]3 years ago

3 0

Answer:

4/25

Step-by-step explanation:

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Simplify the expression. 6nx+7p-14p+2nx-6x

Artist 52 [7]

The simplified version would be 8nx - 7p - 6x

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3 years ago

After 2 females leave a party, there are twice as many males as females. Then 9 males leave and there are twice as many females

ira [324]

Answer: 9 people are left at the party

Step-by-step explanation:

There was originally 8 females and 12 males

8-2 = 6

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Hope this helps!

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4 years ago

Felipe made $168 for 8 hours of work. At the same rate, how much would he make for 18 hours of work?

MrMuchimi

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3 years ago

What is 2 divided on 1000

Hoochie [10]

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4 0

3 years ago

Read 2 more answers

What are the exact solutions of x2 − 5x − 7 = 0, where x equals negative b plus or minus the square root of b squared minus 4 ti

Marat540 [252]

Answer:

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

Step-by-step explanation:

Given

$x^2 - 5x - 7 = 0$

Required

Solve for x using:

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

First, we need to identify a, b and c

The general form of a quadratic equation is:

$ax^2 + bx + c = 0$

So, by comparison with $x^2 - 5x - 7 = 0$

$a = 1$ $b = -5$ $c = -7$

Substitute these values of a, b and c in

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

$x = \frac{-(-5) \± \sqrt{(-5)^2 - 4 * 1 * -7}}{2 * 1}$

$x = \frac{5 \± \sqrt{25 +28}}{2}$

$x = \frac{5 \± \sqrt{53}}{2}$

Split the expression to two

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

To solve further in decimal form, we have

$x = \frac{5 + 7.28}{2}$ or $x = \frac{5 - 7.28}{2}$

$x = \frac{12.28}{2}$ or $x = \frac{-2.28}{2}$

$x = 6.14$ or $x = -1.14$

4 0

3 years ago