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4 years ago

6

Two times a number plus 5

2 answers:

IRINA_888 [86]4 years ago

8 0

Answer:

2x+5

Step-by-step explanation:

Setler79 [48]4 years ago

6 0

Answer:

2n+5

Step-by-step explanation:

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Find the distance between the two points . (5,-3) , (-4,7)

emmasim [6.3K]

Answer:

sqrt(181)

Step-by-step explanation:

sqrt (9^2 + 10^2)

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3 years ago

How to find the values of x and y.

SpyIntel [72]

Use the trigonometric function.

$\sin30^o=\dfrac{x}{20}\\\\\sin30^o=\dfrac{1}{2}\\\\\dfrac{x}{20}=\dfrac{1}{2}\ \ \ |\cdot20\\\\x=10$

$\sin60^o=\dfrac{y}{20}\\\\\sin60^o=\dfrac{\sqrt3}{2}\\\\\dfrac{y}{20}=\dfrac{\sqrt3}{2}\ \ \ \ |\cdot20\\\\y=10\sqrt3$

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4 years ago

Identify h (x) = [x] + 4

garik1379 [7]

The answer is C
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3 years ago

{ y = - 4x-23-4x-3y=13

sleet_krkn [62]

For this case we have the following system of equations:

$y = -4x-23\\-4x-3y = 13$

We solve by the substitution method:

We substitute the first equation in the second equation:

$-4x-3 (-4x-23) = 13$

We apply distributive property considering that $- * - = +:$

$-4x + 12x + 69 = 13\\8x + 69 = 13$

We subtract 69 from both sides of the equation:

$8x = 13-69\\8x = -56$

We divide by 8 on both sides of the equation:

$x = \frac {-56} {8}\\x = -7$

We look for the value of the variable y:

$y = -4 (-7) -23\\y = 28-23\\y = 5$

Thus, the solution of the system is $(x, y): (-7,5)$

Answer:

$(x, y): (-7,5)$

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4 years ago

What is the area of a circle with the radius of 16 meters?

Vaselesa [24]

Answer: 804 meters

Step-by-step explanation:

Area of a circle = πr²

Radius = 16m

π(16)² = 804.2477193 meters

8 0

2 years ago