3 years ago

Solve the quadratic equation by the appropriate method. x^2-81=0

Mathematics

1 answer:

Salsk061 [2.6K]3 years ago

7 0

Answer:

x*x-81=0

x*x=81

x=√81

x=9

You might be interested in

True or False? An isosceles triangle can be scalene. A. True B. False

Fynjy0 [20]

False. An isosceles has is defined by its two equal sides, scalenes do NOT have any equal sides.

Hope this helps, mark brainliest please!

6 0

4 years ago

Read 2 more answers

Lashed year palm tickets were $65, and this year they are $50. What is the percent of decrease in the price of prom tickets? Rou

Goshia [24]

23% would be the answer

6 0

3 years ago

Read 2 more answers

The value of a painting increases by 79 percent every year. If the painting was purchased 8 years ago for $12,761, how much is i

algol [13]

Answer:

$93,410.52

Step-by-step explanation:

4 0

3 years ago

Solve this question using standard algorithm for multiplying a fraction by the whole number.Simplify the product.3x3/4

Eva8 [605]

Answer:

$\frac{9}{4}$

Step-by-step explanation:

Hi there!

$3*\frac{3}{4}$

Rewrite 3 as a fraction

$= \frac{3}{1} *\frac{3}{4}$

Multiply the numerators and the denominators

$3*3=9\\1*4=4$

$= \frac{9}{4}$

I hope this helps!

8 0

3 years ago

Please help me on this question

Nastasia [14]

Answer:

it would be A

Step-by-step explanation:

you have to find angle C first so you would subtract 105 from 180 to get 75 and then to find angle B you would add 75 and 55 to get 130 and since its a triangle it always has 180 degrees so do 180 - 130 to get 50

6 0

3 years ago