All categories

3 years ago

COMPLETE the equation x2 - 9 = 0 has real solution(s).

Mathematics

1 answer:

Nataly [62]3 years ago

3 0

Answer:

Step-by-step explanation:

x^2-9 = 0

x^2 = 0+9

x^2=9

Take square root at both sides:

√x^2 =+/-√9

x =+/- 3

This equation has 2 real solutions, x=3 , x=-3....

You might be interested in

During a fundraiser, John raised $50, Susan raised $72, and Kara raised $65. Who has the greatest magnitude of money raised?

TiliK225 [7]

Answer:

Susan has the most money which is $72

Step-by-step explanation:

because john has $50 which is lower than $72 and kara has $65 which is lower than $72 so therefore susan has more money

5 0

3 years ago

Read 2 more answers

Surface area of a sphere is 615.752 m2, what is the volume of the sphere?

const2013 [10]

the volume (V) of a sphere = $\frac{4}{3}$ πr³

We require to know the radius r to calculate the volume

using surface area of a sphere = 4πr² = 615.752

divide both sides by 4π

r² = $\frac{615.752}{12.56}$ = 49.0248...

take the square root of both sides

r = $\sqrt{49.0248..}$ ≈ 7, hence

V= $\frac{4}{3}$ × π × 7³ = 1436.76 m³ → B

8 0

3 years ago

Find area of a square garden having a length 45m

Oliga [24]

Answer:

A = 2025 ft^2

Step-by-step explanation:

The area of a square is given by

A = s^2 where s is the side length

A = 45^2

A = 2025 ft^2

7 0

3 years ago

Read 2 more answers

Can someone please help?

Pepsi [2]

Answer:

Try working from Right to left

Step-by-step explanation:

That way the exponits will work out.

6 0

3 years ago

Help i’m begging plsss

olga_2 [115]

Answer:

$x=8$

Step-by-step explanation:

Given

$AB||CD$

$\angle ABC = 5x + 50$

$\angle BCD = 7x + 34$

Required

Find x

If $AB||CD$ i.e. If AB is parallel to CD, then

$\angle ABC = \angle BCD$

Substitute values for ABC and BCD

$5x + 50 = 7x + 34$

Collect Like Terms

$5x - 7x = -50 + 34$

$-2x = -16$

Multiply through by $-\frac{1}{2}$

$-\frac{1}{2} * -2x = -16 * -\frac{1}{2}$

$\frac{1}{2} * 2x = 16 * \frac{1}{2}$

$\frac{2x}{2} = \frac{16}{2}$

$x = \frac{16}{2}$

$x=8$

3 0

3 years ago