3 years ago

Evaluate the expression, xz- y, if x=3,y=6, and z =7

Mathematics

1 answer:

avanturin [10]3 years ago

4 0

3*7-6
21-6=15
15 is the answer

You might be interested in

After going shopping we had 10% of our money left we spent 180 $ how much money did we have left

Marrrta [24]

Answer:

$18 :)

Step-by-step explanation:

10% of 180 is 18

4 0

3 years ago

HI PLEASE HELP BELOW IM REALL IN NEED OF HELP

aalyn [17]

The answer is 3, because the other two sides are 3 and the angle is 60, so the other angles will have to be 60. That means it is an equilateral triangle.

3 0

4 years ago

Please help me with this :)

skad [1K]

Mathspapa a website that will help.

6 0

3 years ago

Find the degree of the monomial 8ab^3

creativ13 [48]

Answer:

B: 4

Step-by-step explanation:

#first

8 0

3 years ago

Read 2 more answers

The total service time of a multistep manufacturing operation has a gamma distribution with mean 18 minutes and standard deviati

11Alexandr11 [23.1K]

Answer:

The answer is " $\bold{r=9, \lambda=\frac{1}{2}\ and \ \ \text{exponential, 9 steps}}$ "

Step-by-step explanation:

In point a:

We are aware of the random gamma variable X:

$\to \mathbb{E} =\frac{r}{\lambda}\\\\\to Std(X) =\frac{\sqrt{r}}{\lambda}\\\\$

It is given:

$\to \mathbb{E} = 18 \\\\\to std(X)=6$

$\to 18=\frac{r}{\lambda}\\\\ \to 6=\frac{\sqrt{r}}{\lambda}\\\\$

Substituting the value:

$\to \frac{\sqrt{r}}{6}=\frac{r}{18}\\\\\to r=9\\\\\to \lambda=\frac{1}{2}\\\\$

In point b:

When building the Erlang/Gammas distribution, these could reasonably be assumed to become an exponential distribution only with \lambda = 1/2 parameter with one step but to be r = 9 for one step.

8 0

3 years ago