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kondaur [170]
2 years ago
15

What are roots of quadratic function completing the square x^2+4X-1=0

Mathematics
1 answer:
rosijanka [135]2 years ago
5 0

Answer:

x=\sqrt{-4x+1}

x=-\sqrt{-4x+1\\}

Step-by-step explanation:

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Alex leaves school to go home. He walks 11 meters North and then 10 meters West. How far is Alex from the school?
yuradex [85]

Answer:

~15 meters away

Step-by-step explanation:

c^2 = a^2+b^2

c^2 = 10^2+11^2

c^2 = 100+121

c^2 = 221

c = \sqrt{221}

c = ~15

3 0
3 years ago
Which line is a linear model for the data?
DochEvi [55]

Answer:

Bottom Left Choice

Step-by-step explanation:

If you look at the points, they are traveling up and to the right. So is the line in the graph. Also, the line in the graph is closer to more dots than the others.

5 0
2 years ago
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I NEED HELP PLS I WILL MARK BRAINLIEST
ANEK [815]

Answer:

\approx 11.2\:\mathrm{in}

Step-by-step explanation:

The swing of the tip of pendulum is creating an arc. The question is actually asking for the length of this arc. The length of an arc is given by 2r\pi\cdot \frac{\theta}{360}, where r is the radius of the circle and \theta is the angle of the arc.

In this problem, we're given:

\theta = 40^{\circ},\\r=16

Substituting given values, we get:

2\cdot 16\cdot \pi \cdot \frac{40}{360}=32\pi\cdot \frac{1}{9}\approx \boxed{11.2\:\mathrm{in}}

8 0
3 years ago
The admission fee at a small to the school play is $1.50 for children (x) and $4.00 for adults (y). On opening night, the revenu
Alecsey [184]

Answer:

1.50x + 4.00y =5,050

Step-by-step explanation:


5 0
3 years ago
Find the mean of this data set: 2, 5, 5
Rufina [12.5K]

Answer:

Mean = 4

Step-by-step explanation:

Mean = \frac{\sum x}{n} = \frac{2 + 5+ 5}{3} = \frac{12}{3} = 4

8 0
3 years ago
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