All categories

1 year ago

Which of the following are solutions to the equation below? Check all that apply. 4x2 - 81 = 0

Mathematics

1 answer:

Vinil7 [7]1 year ago

8 0

Answer:

9/2 -9/2

Step-by-step explanation:

Hope this helps! ;-)

You might be interested in

25x2 – 9y2 Factories

alina1380 [7]

Answer:

Step-by-step explanation:

25x^2-9y^2

=(5x)^2-(3y)^2

=(5x-3y)(5y+3y)

6 0

2 years ago

Read 2 more answers

Find the measure of A as indicates in the picture.

-Dominant- [34]

Answer:

∠A = 58°

Step-by-step explanation:

all triangles contain 180°

180° - 149° = 31°

x + 63° + x + 96° + 31° = 180°

combine like terms:

2x + 190° = 180°

2x = -10°

x = -5°

∠A = -5° + 63° = 58°

8 0

2 years ago

22-3(4) How do I answer this question?

Ulleksa [173]

Answer:

Step-by-step explanation:

22-3=19

19x4=76

5 0

2 years ago

Read 2 more answers

Which expression is the result of subtracting (Z2-3i) from (Z1 + 2)? A B C D

Reika [66]

Answer:

im not sure but ill try i think A

4 0

2 years ago

Read 2 more answers

A conservative estimate of the number of stars in the universe is 6 x 10^22. The average human can see about 3,000 stars at nigh

Ilia_Sergeevich [38]

$2 \times 10^{19}$ times more stars are there in universe compared to human eye can see

<h3>Solution:</h3>

Given that, conservative estimate of the number of stars in the universe is $6 \times 10^{22}$

The average human can see about 3,000 stars at night with only their eyes

To find: Number of times more stars are there in the universe, compared to the stars a human can see

Let "x" be the number of times more stars are there in the universe, compared to the stars a human can see

Then from given statement,

$\text{Stars in universe} = x \times \text{ number of stars human can see}$

Substituting given values we get,

$6 \times 10^{22} = x \times 3000\\\\x = \frac{6 \times 10^{22}}{3000}\\\\x = \frac{6 \times 10^{22}}{3 \times 10^3}\\\\x = 2 \times 10^{22-3}\\\\x = 2 \times 10^{19}$

Thus $2 \times 10^{19}$ times more stars are there in universe compared to human eye can see

5 0

3 years ago