Help your girl out! :) be kind pls

Mathematics

2 answers:

lukranit [14]3 years ago

5 0

Answer: Bottom Right, the figure must have right angles.

The rest all make sense, inculding the bottom right answer, but it said "must have right angles."

nadezda [96]3 years ago

3 0

Answer:

Step-by-step explanation:

You might be interested in

Ryan enlarged the size of a photo to a width of 6in what is the new height if it was originally 2 in wide and 4in tall

spin [16.1K]

The new height is 12 inches tall

6 0

3 years ago

Suppose that the probabilities are 0.4, 0.3, 0.2, and 0.1, respectively, that 0, 1, 2, or 3 power failures will strike a certain

defon

Answer:

mean = 1 power failure

variance = 1 (power failure)²

Step-by-step explanation:

Since the mean is computed as

mean = E(x) = ∑ x * p(x) for all x

then for the random variable x=power failures , we have

mean = ∑ x * p(x) = 0 * 0.4 + 1* 0.3 + 2*0.2 + 3* 0.1 = 1 power failure

since the variance can be calculated through

variance = ∑[x-E(x)]² * p(x) for all x

but easily in this way

variance = E(x²) - [E(x)]² , then

E(x²) = ∑ x² * p(x) = 0² * 0.4 + 1²* 0.3 + 2²*0.2 + 3²* 0.1 = 2 power failure²

then

variance = 2 power failure² - (1 power failure)² = 1 power failure²

therefore

mean = 1 power failure

variance = 1 power failure²

7 0

3 years ago

Graph the function y=-0.5 sqrt x-3+2

Kay [80]

The graph of <span>y=-0.5 sqrt (x-3)+2
Df= {x/x-3>=0}
Df= [3, + infinity[
derivative of f(x)
f'(x)= -0.5 x 2 /</span>sqrt (x-3)= - 1/sqrt (x-3) <0, f is a decreasing function for all x in the Df
limf(x)=2 x--------->3, limf(x)=-infinity, x--------->+infinity

look at the graph