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2 years ago

Five friends went on a road trip and kept track of how long each of them spent driving.

Mathematics

1 answer:

erastovalidia [21]2 years ago

5 0

Answer:

Step-by-step explanation:

16% is the answer.

440 is what percent of 2750?

440 = x/100 x 2750 (of means x or times in math)

440 = 2750x/100

440 = 275x/10

440x10 = 275x/10

4400 = 275x

4400/275= 275x/275

4400/275 = x

4400/275 = 16%

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2 years ago

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The 3 inside angles of a triangle need to equal 180 degrees.

You are given 28 for one.

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2 years ago

Solve for x in the equation x squared + 2 x + 1 = 17.

Papessa [141]

Answer:

$x = - 1 + \sqrt{17}\\and\\x = - 1 - \sqrt{17}\\$

Step-by-step explanation:

given equation

$x^2 +2x +1 = 17$

subtracting 17 from both sides

$x^2 +2x +1 = 17\\x^2 +2x +1 -17= 17-17\\x^2 +2x - 16 = 0\\$

the solution for quadratic equation

$ax^2 + bx + c = 0$ is given by

x = $x = -b + \sqrt{b^2 - 4ac} /2a \\\\and \ \\-b - \sqrt{b^2 - 4ac} /2a$

________________________________

in our problem

a = 1

b = 2

c = -16

$x =( -2 + \sqrt{2^2 - 4*1*-16}) /2*1 \\x =( -2 + \sqrt{4 + 64}) /2\\x =( -2 + \sqrt{68} )/2\\x = ( -2 + \sqrt{4*17} )/2\\x = ( -2 + 2\sqrt{17} )/2\\x = - 1 + \sqrt{17}\\and\\\\x = - 1 - \sqrt{17}\\$

thus value of x is

$x = - 1 + \sqrt{17}\\and\\x = - 1 - \sqrt{17}\\$

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2 years ago

3y=12x+6 in slope-intercept form

tresset_1 [31]

Answer:

$\displaystyle y = 4x + 2$

Step-by-step explanation:

$\displaystyle \frac{3y}{3} = \frac{4x + 12}{3} \\ \\ y = 4x + 2$

I am joyous to assist you anytime.

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2 years ago

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