Show whether or not the points with coordinates (1,3) (4,2) (-2,6) are vertices of a right triangle

Sophia is designing the seating arrangement for a concert and

pentagon [3]

Answer:

the answer for the first part is 260

the equation is n+8

Step-by-step explanation:

all you need to do is take the starting number witch is 13 then you add 8 and then take that number and add 8 so thats why the equation is n+8 n equaling the starting number and 8 equaling to the reoccurring number.

7 0

2 years ago

Suppose all left-handed people are excluded from a sample. What is this an example of?

Gala2k [10]

The proportion of left-handed people in the general population is about 0.1. Suppose a random sample of 225 people is observed.

1. What is the sampling distribution of the sample proportion (p-hat)? In other words, what can we say about the behavior of the different possible values of the sample proportion that we can get when we take such a sample?

(Note: normal approximation is valid because .1(225) = 22.5 and .9(225) = 202.5 are both more than 10.)

2. Since the sample proportion has a normal distribution, its values follow the Standard Deviation Rule. What interval is almost certain (probability .997) to contain the sample proportion of left-handed people?

3. In a sample of 225 people, would it be unusual to find that 40 people in the sample are left-handed?

4. Find the approximate probability of at least 27 in 225 (proportion .12) being left-handed. In other words, what is P(p-hat ? 0.12)?

Guidance: Note that 0.12 is exactly 1 standard deviation (0.02) above the mean (0.1). Now use the Standard Deviation Rule.

3 0

4 years ago

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F(x)=-3x-7<br> if f(x)=-61, find x

Mars2501 [29]

Answer:

18

Step-by-step explanation:

You have to set the equations equal to each other and then solve for the variable.

Hope this helps:)

4 0

3 years ago

Which of the following equations describes the line shown below? Check all<br> that apply.

scoundrel [369]

Answer:

B. y = 2x - 2

E. $y + 4 = 2(x + 1)$

F. $y - 6 = 2(x - 4)$

Step-by-step explanation:

The equation of the line can be found using either the point-slope equation or the slope-intercept equation.

✔️Equation of the line in point-slope using the slope and the coordinates of the point (4, 6):

Slope = m = change in y/change in x

Using (4, 6) and (-1, -4),

m = (-4 - 6)/(-1 - 4)

m = -10/-5

m = 2

Substitute m = 2, and (a, b) = (4, 6) into the point-slope equation form $y - b = m(x - a)$

Thus:

$y - 6 = 2(x - 4)$

✔️Equation of the line in point-slope using the slope and the coordinates of the point (-1, -4):

Slope = m = 2

Substitute m = 2, and (a, b) = (-1, -4) into the point-slope equation form $y - b = m(x - a)$

Thus:

$y - (-4) = 2(x - (-1))$

$y + 4 = 2(x + 1)$

✔️Equation of the line in slope-intercept form, y = mx + b

Where,

m = slope = 2

b = y-intercept = -2 (the point where the line intercepts the y-axis)

Thus, substitute m = 2 and b = -2 into y = mx + b

y = 2x + (-2)

y = 2x - 2

6 0

3 years ago

Multiply the fractions. Write your answers in simplest form. 1/2 x 2/5

zepelin [54]

First make it that both denominators are the same.
$(\frac{1}{2} \times 5) + ( \frac{2}{5} \times 2) = \frac{5}{10} + \frac{4}{10}$
Then add both numerators
$\frac{5}{10} + \frac{4}{10} = \frac{9}{10}$
Your final answer should be
$\frac{9}{10}$

6 0

3 years ago

Read 2 more answers