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Virty [35]
3 years ago
12

(x+5)to the second power -4=12​

Mathematics
1 answer:
Softa [21]3 years ago
5 0

Answer:

x = 3i

Step-by-step explanation:

(x+5)² - 4 = 12

simplify (x+5)²

x × x + 5 × 5 - 4 = 12

x² + 25 - 4 = 12

x² + 21 = 12

combine the like terms

x² = 12 - 21

x² = -9

square root both sides to solve for x

√x² = √-9

the square cancels the square root, so we have

x = √-9

x = 3i

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What’s the measure of angle XYZ?
Murrr4er [49]
In a circle, the measure of an inscribed angle is half the measure of the intercepted arc.

m∠XYZ = 68/2 = 34°
5 0
4 years ago
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Hi, can you help me to find (if passible) the complement andsupplement of the angle 3pi/ 4.
nika2105 [10]

Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees.

In radians this are

\begin{gathered} \frac{\pi}{2}\text{ for }90\degree \\ \pi\text{ for }180\degree \end{gathered}

To find the complement of 3π/4, subtract it by π/2

\frac{\pi}{2}-\frac{3\pi}{4}=-\frac{\pi}{4}

To find the supplement of 3π/4, subtract it by π.

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6 0
1 year ago
What is the area of this figure?
Ugo [173]

Answer:

11610

Step-by-step explanation:

First you do the top rectangle which the area for that is 144 which is 4 times 4 times 3 times 3.

Then you do the middle rectangle which the area is 441 which is 7 times 7 times 3 times 3.

Then you do the last rectangle which the area is 11025 which is 15 times 15 times 7 times 7.

Then lastly you add all three areas which is 144+441+11025=11610. So therefore, the answer is 11610.

4 0
3 years ago
Solve for y 3x=2y+10
docker41 [41]

Answer:

y=3/2x - 5

Step-by-step explanation:

Subtract the 2y to move it to the other side

Subtract the 3x to move it to the other side

you get the equation of -2y=-3x + 10

Divide by -2

5 0
4 years ago
What is the value for x,the length of side bc?7 to
kifflom [539]

Answer:

x = 17.5

Step-by-step explanation:

\triangle ABC \sim \triangle DEF... (given)

\therefore \frac{AB}{DE} = \frac{BC}{EF}

\therefore \frac{10}{4} = \frac{x}{7}

\therefore 2.5 = \frac{x}{7}

\therefore 2.5\times 7= x

\therefore 17.5= x

\therefore x = 17.5

5 0
3 years ago
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