All categories

3 years ago

What is the answer for this in square root form

Mathematics

1 answer:

vredina [299]3 years ago

4 0

Answer:

x = ± sqrt(-49)

or x = ± 7i

Step-by-step explanation:

x^2 +49 = 0

Subtract 49 from each side

x^2 +49 -49 = 0-49

x^2 = -49

Take the square root of each side

sqrt(x^2) = ± sqrt(-49)

x = ± sqrt(-49)

We have to complex numbers to solve

x = ± sqrt(-1) sqrt(49)

sqrt(-1) = i

x = ±i *7

x = ± 7i

You might be interested in

Y=2/3x-3 find x, if y is -11

Rainbow [258]

Answer:

x = -12

Step-by-step explanation:

y = 2/3x - 3

-11 = 2/3x - 3

-11 + 3 = 2/3x

-8 = 2/3x

-8 ÷ 2/3 = x

-12 = x

4 0

2 years ago

Mary must select a colored ballroom a bag.The bag contains 1 red marble , 1 blue marble , 1 green marble ,1 orange marble, and 1

wariber [46]

She has a 1 in 5 chance of getting the green ball because there is one of each color marble

5 0

3 years ago

Read 2 more answers

The answer choices are <br> J<br> L<br> H<br> K

ValentinkaMS [17]

I think I know the answer but I’m not sure which point it’s asking for :(

5 0

3 years ago

Read 2 more answers

What is the product?

Alexxandr [17]

The correct answer is a)

3 0

3 years ago

The diagram above shows a rectangle inscribed in a circle AB=10 and AC =12 caculate the total surface area of the shaded part

erastova [34]

Answer:

$71.63 \: \: \mathrm{cm^2 }$

Step-by-step explanation:

Once we know the diameter of the circle, we can figure out the problem.

The diameter of the circle = The diagonal of the rectangle inscribed in the circle

To find the diagonal of the rectangle, we can use a formula.

$d=\sqrt{w^2 + l^2}$

The width is 10 cm and the length is 12 cm.

$d=\sqrt{10^2 + 12^2}$

$d \approx 15.62$

The diagonal of the rectangle inscribed in the circle is 15.62 cm.

The diameter of the circle is 15.62 cm.

Find the area of the whole circle.

$A=\pi r^2$

The $r$ is the radius of the circle, to find radius from diameter we can divide the value by 2.

$r = \frac{d}{2}$

$r=\frac{15.62}{2}$

$r=7.81$

Let’s find the area now.

$A=\pi (7.81)^2$

$A \approx 191.625$

Find the area of rectangle.

$A=lw$

Length × Width.

$A = 12 \times 10$

$A=120$

Subtract the area of the whole circle with the area of rectangle to find area of shaded part.

$191.625-120$

$71.625 \approx 71.63$

5 0

3 years ago