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3 years ago

7x + 17 100° Solve for X

Mathematics

1 answer:

tensa zangetsu [6.8K]3 years ago

3 0

Answer:

7x =100-17

7x = 83

X= 11/6/7

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-1.365, -3.14, -4, -9/2

Step-by-step explanation:

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what are the values of a, b, and c in the quadratic equation 0 = x2 – 3x – 2? - a = , b = 3, c = 2 - a = , b = –3, c = –2 - a =

Juliette [100K]

$x^2-3x-2=0\\\\a=1;\ b=-3;\ c=-2\\\Delta=b^2-4ac\\\\\Delta=(-3)^2-4\cdot1\cdot(-2)=9+8=17 \ \textgreater \ 0\\\\then\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{3-\sqrt{17}}{2\cdot1}=\boxed{\dfrac{3-\sqrt{17}}{2}}\\\\x_2=\dfrac{3+\sqrt{17}}{2\cdot1}=\boxed{\dfrac{3+\sqrt{17}}{2}}$

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3 years ago

How do I solve the equation 15plus b equals 23

kompoz [17]

15+B=23

subtract 15 from both sides

-15+15+B=23-15

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B=8

Hope this helps :)

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3 years ago

A-The slope is2/3 and the y-intercept is -2

USPshnik [31]

Answer:

Step-by-step explanation:

<h2>How to find the slope? </h2>

The letter <em>m</em> is usually used to refer to the slope. To calculate it, we divide the change in <em>y </em>over the change in <em>x</em>.

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

In order to find this, we must find at least <em>2</em> coordinates that we know the function passes through.

In this case, we can see that the function passes through the point (3,0) and (0,-2).

$m=\frac{0-(-2)}{3-0} = \frac{2}{3}$

Now that we know that the slope is $\frac{2}{3}$ we can ignore options C and D since $\frac{3}{2} \neq \frac{2}{3}$

<h2>What is the y-intercept? </h2>

The y-intercept is the y value were the function <em>touches</em> the y axis.

In this case, we can see that the only point where the function touches the y axis (the vertical one) is -2

Let me know if you'd like me to explain something in more detail. Good luck!

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3 years ago