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polet [3.4K]
3 years ago
11

Make sure you show all work and calculations on this paper.

Mathematics
1 answer:
vlada-n [284]3 years ago
7 0
The ground speed of the plane is 3.0
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O GRAPHS, FUNCTIONS, AND SEQUENCES
WINSTONCH [101]
Always use the formula (y2-y1)/(x2-x1) to find a line’s slope, given two points:

(-1- -8)/(4-5) = 7/-1 = -7

-7 is the slope
7 0
3 years ago
Solve x2 + 6x + 7 = 0. (2 points)
Alexandra [31]

Option C: $x=-3 \pm\sqrt{2}

Solution:

Given equation is x^{2}+6 x+7=0.

This is a quadratic equation.

Here a = 1, b = 6, c = 7

To solve the given equation by quadratic formula,

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}

Substitute the given values in the quadratic formula, we get

$x=\frac{-6 \pm \sqrt{6^{2}-4 (1) (7)}}{2 (1)}

$x=\frac{-6 \pm \sqrt{36-28}}{2 }

$x=\frac{-6 \pm \sqrt{8}}{2 }

$x=\frac{-6 \pm2 \sqrt{2}}{2 }

$x=\frac{2(-3 \pm\sqrt{2})}{2 }

2 in the numerator and denominator are cancelled.

$x=-3 \pm\sqrt{2}

Option C is the correct answer.

8 0
3 years ago
Find the y-intercept of the line on the graph.
sveticcg [70]
Wouldn’t be 0 because that’s where the line cross the middle line
4 0
4 years ago
A local company manufactures netbook computers. Their profit function is given by this equation: y equal minus x to the power of
Westkost [7]
Answer by BlueSky06

The equation described above can also be written as,                    y = -x² + 100x + 4000To get the number of notebooks that will give them the maximum profit, we derive the equation and equate to zero.                  dy/dx = -2x + 100 = 0The value of x from the equation is 50. Then, we substitute 50 to the original equation to get the profit.                    y = -(50^2) + 100(50) + 4000 = 6500Thus, the maximum profit that the company makes is $6,500/day. 
Read more on Brainly.com - brainly.com/question/3586459#readmore
3 0
3 years ago
Read 2 more answers
Im confused on how to solve this
andre [41]

Answer:

x=7

Step-by-step explanation:

7x-7=4x+14

3x=21

x=7

8 0
4 years ago
Read 2 more answers
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