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3 years ago

Solve for x: x^2-2x=15

Mathematics

1 answer:

Lyrx [107]3 years ago

5 0

Answer:

Step-by-step explanation:

x^2 - 2x = 15

x^2 - 2x - 15 = 15 - 15 (Subtract 15 from both sides.)

x^2 - 2x -15 = 0 (Simplify.)

Set up & solve for a quadratic formula

<h3>* I will solve for your first x</h3>

2 + root 64 / 2x 1 = 2 + root 64 / 2

root 64 = 8

= 2 + 8 / 2

= 10 / 2

= 5

To solve for the second, follow the same pattern/formula for the first that I used to get 5.

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Complimentary angles have a sum equal to 90°

maw [93]

Answer:

Ummm there's no picture so I kinda cant answer

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

2. The cone has a radius of 30 mm and slant height of 34 mm. What is the height h for this cone?

Flura [38]

Answer:

h = 16

Step-by-step explanation:

By applying the Pythagorean Theorem, the slant height is given by the formula:

$\sqrt{r^2+h^2}$

34 = $\sqrt{30^2 + h^2}$

$34^2 = 30^2 + h^2$

$1156 = 900 + h^2$

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$h = \sqrt{256}$

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6 0

3 years ago

Find the interval on the real number line for which the radicand is nonnegative

dsp73

The answer
the complement of the question is

Find the interval on the real number line for which the radicand is nonnegative (greater than or equal to zero) so that the radical sqrt(8 x - 8) defines a real number. Leave answer in interval notation.


sqrt(8 x - 8) is definite function if 8 x - 8 ≥0, 
8 x ≥ 8 and x ≥ 8/ 8 = 1, x ≥ 1, so the interval solution is [1, infinity[

6 0

3 years ago

Find the distance between Point A(9, 10) and B(-1,9) to the nearest tenth.

olganol [36]

Answer:

10.0

Step-by-step explanation:

see attached for reference.

given two points in the x-y axis (x₁, y₁) and (x₂, y₂)

the distance bettween them is given by

Distance, D = √ ( (x₂-x₁)² + (y₂-y₁)² )

In our case we are given points (9,10) and (-1,9)

substituting these into the formula , we get:

D = √ ( (9-10)² + (-1-9)² )

= √ ( (-1)² + (-10)² )

= √ ( 1 + 100 )

=√101

= 10.04988

= 10.0 (rounded to nearest tenth)

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3 years ago

Koji is installing a rectangular window in an office building. The window is 823 ft wide and 534 ft high. The formula for the ar

IrinaK [193]

A = b * h
b = 8 2/3
h = 5 3/4

A = 8 2/3 * 5 3/4.....turn to improper fractions
A = 26/3 * 23/4
A = 598/12
A = 49 5/6 ft^2 <====

4 0

3 years ago