What is the x-intercept of the function graphed below?

exis [7]

6/25 is the answer as a simplified fraction

3 0

3 years ago

The coordinates of one point of a line segment ate (-2,-7). The line segment is 12 units long. Give three possible coordinates o

Paul [167]

Answer:

(-2, 5), (-2, -19), (5.2, 2.6)

Step-by-step explanation:

You can add ±12 to either the x- or the y-coordinate, as was done in the first two answers above.

Or, you can figure the side lengths of a triangle with hypotenuse 12 and add those to the coordinates. For example, a 3-4-5 right triangle multiplied by 2.4 will have side lengths of 7.2, 9.6 and a hypotenuse of 12. Hence we can find one of your end points to be ...

(-2+7.2, -7+9.6) = (5.2, 2.6)

4 0

4 years ago

Can someone please help

liq [111]

Answer:

i d k

Step-by-step explanation:

i am sorry

7 0

4 years ago

Find an equation of the plane. The plane through the points (0, 9, 9), (9, 0, 9), and (9, 9, 0) Incorrect: Your answer is incorr

Andrei [34K]

Answer:

The equation of the plane is represented by $\frac{1}{18}\cdot x + \frac{1}{18}\cdot y + \frac{1}{18}\cdot z = 1$ .

Step-by-step explanation:

Algebraically speaking, a plane can be represented by following vectorial product:

$(a,b, c)\,\bullet\,(x,y,z) = 1$ (1)

Where:

$a$ , $b$ , $c$ - Plane coeffcients.

$x$ , $y$ , $z$ - Coordinates.

We need three distinct points to determine all coefficients. If we know that $(x_{1},y_{1},z_{1}) = (0,9,9)$ , $(x_{2},y_{2}, z_{2}) = (9,0,9)$ and $(x_{3},y_{3},z_{3}) = (9,9,0)$ , the system of equations to be solved is:

$9\cdot b + 9\cdot c = 1$ (1)

$9\cdot a + 9\cdot c = 1$ (2)

$9\cdot a + 9\cdot b = 1$ (3)

The solution of this system is $a = \frac{1}{18}$ , $b = \frac{1}{18}$ , $c = \frac{1}{18}$ .

Hence, the equation of the plane is represented by $\frac{1}{18}\cdot x + \frac{1}{18}\cdot y + \frac{1}{18}\cdot z = 1$ .

7 0

3 years ago

In a recent Super Bowl, a TV network predicted that 53 % of the audience would express an interest in seeing one of its forthcom

rjkz [21]

<h3>Answer: -0.196</h3>

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Explanation:

We're conducting a one proportion Z test.

The hypothesized population proportion is p = 0.53, which is not to be confused with the p-value (unfortunately statistics textbooks seem to overuse the letter 'p'). Luckily this problem is not asking for the p-value.

The sample population proportion is

phat = x/n = 41/79 = 0.518987 approximately

The standard error (SE) is

SE = sqrt(p*(1-p)/n)

SE = sqrt(0.53*(1-0.53)/79)

SE = 0.056153 approximately

Making the test statistic to be

z = (phat - p)/(SE)

z = (0.518987 - 0.53)/0.056153

z = -0.19612487311452

z = -0.196

Which is approximate and rounded to 3 decimal places.

3 0

4 years ago