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pickupchik [31]
3 years ago
14

What's the value below??

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
3 0
The correct answer is 8.
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I need help relearning inequalities
Leto [7]
This is an example of how you solve an inequality.

7 0
3 years ago
Good strategy for using slope formula
Fantom [35]
I personally use y2-y1 over x2-x1 because it's simple.  Plot two y values and two x values.  The first ones you plotted are x1 and y1, the others are x2 y2.  Now subtract y2-y1 and x2-x1.  Afterwards, divide the y value by the x value, that will give you slope.
3 0
3 years ago
What are the exact solutions of x2 − 5x − 7 = 0, where x equals negative b plus or minus the square root of b squared minus 4 ti
Marat540 [252]

Answer:

x = \frac{5 + \sqrt{53}}{2}  or  x = \frac{5 - \sqrt{53}}{2}

Step-by-step explanation:

Given

x^2 - 5x - 7 = 0

Required

Solve for x using:

x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}

First, we need to identify a, b and c

The general form of a quadratic equation is:

ax^2 + bx + c = 0

So, by comparison with x^2 - 5x - 7 = 0

a = 1     b = -5      c = -7

Substitute these values of a, b and c in

x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}

x = \frac{-(-5) \± \sqrt{(-5)^2 - 4 * 1 * -7}}{2 * 1}

x = \frac{5 \± \sqrt{25 +28}}{2}

x = \frac{5 \± \sqrt{53}}{2}

Split the expression to two

x = \frac{5 + \sqrt{53}}{2}  or  x = \frac{5 - \sqrt{53}}{2}

To solve further in decimal form, we have

x = \frac{5 + 7.28}{2}  or  x = \frac{5 - 7.28}{2}

x = \frac{12.28}{2}  or  x = \frac{-2.28}{2}

x = 6.14 or x = -1.14

4 0
3 years ago
These lines are below are parallel if the slope of the green line is -4 what is the slope of the red line
Alja [10]

Answer:

The slope would also be -4.

Step-by-step explanation:

This is because parallel lines have the exact same slope. Since these two lines are parallel and the first has a slope of -4, the second must as well.

7 0
3 years ago
Read 2 more answers
Solve r=s/17−t for t
mamaluj [8]
T=-r+s/17

Explanation:
6 0
3 years ago
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