All categories

3 years ago

Find the product (3x-9)^2

Mathematics

1 answer:

Stells [14]3 years ago

4 0

Here are the steps:

(3x-9)^2

(3x-9)(3x-9)

9x^2 - 27x - 27x +81

9x^2 - 54x + 81

good luck ;)

You might be interested in

What is the distance between -15 and 7

fomenos

22 i think idk sorry if i’m wrong

3 0

3 years ago

Read 2 more answers

Can someone please explain to me step by step how to solve this problem. <br><br> 4y-(3+y);y=2

avanturin [10]

Answer:

The answer is 3

Step-by-step explanation:

Plug in 2 for all the y variables and solve:

4(2)-(3+2)=

8-5=3

5 0

3 years ago

Read 2 more answers

If the abc and def are congruent by the ASA criterion which pair of angles must be congruent ?

ycow [4]

Yeah yeah but yeah i is going camping on the golf thing and he said he has no idea where y’all

8 0

3 years ago

Slope of (3,-1) and (0, -5)

Usimov [2.4K]

Answer:

slope =-5-(-1)/0-3

=-5+1/-3

=4/3

Step-by-step explanation:

5 0

3 years ago

Let x be the amount of time (in minutes) that a particular San Francisco commuter must wait for a BART train. Suppose that the d

larisa [96]

Answer:

a) $P(X$

$P(X>14) = 1-P(X$

b) $P(7< X$

c) We want to find a value c who satisfy this condition:

$P(x$

And using the cumulative distribution function we have this:

$P(x$

And solving for c we got:

$c = 20*0.9 = 18$

Step-by-step explanation:

For this case we define the random variable X as he amount of time (in minutes) that a particular San Francisco commuter must wait for a BART train, and we know that the distribution for X is given by:

$X \sim Unif (a=0, b =20)$

Part a

We want this probability:

$P(X$

And for this case we can use the cumulative distribution function given by:

$F(x) = \frac{x-a}{b-a} = \frac{x-0}{20-0}= \frac{x}{20}$

And using the cumulative distribution function we got:

$P(X$

For the probability $P(X>14)$ if we use the cumulative distribution function and the complement rule we got:

$P(X>14) = 1-P(X$

Part b

We want this probability:

$P(7< X$

And using the cdf we got:

$P(7< X$

Part c

We want to find a value c who satisfy this condition:

$P(x$

And using the cumulative distribution function we have this:

$P(x$

And solving for c we got:

$c = 20*0.9 = 18$

3 0

3 years ago