1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
horsena [70]
3 years ago
6

Y=-4. Y=x-8 solve for substitution

Mathematics
2 answers:
Lostsunrise [7]3 years ago
7 0

Answer:

ok

Step-by-step explanation:

I think

Deffense [45]3 years ago
6 0
Point form: (4,-4)
Or x=4, y=-4
You might be interested in
Identify the expression for calculating the mean of a binomial distribution.
Gre4nikov [31]
A random variable X following a binomial distribution with success probability p across n trials has PMF

\mathbb P(X=x)=\begin{cases}\dbinom nxp^x(1-p)^{n-x}&\text{for }x\in\{0,1,\ldots,n\}\\\\0&\text{otherwise}\end{cases}

where \dbinom nx=\dfrac{n!}{x!(n-x)!}.

The mean of the distribution is given by the expected value which is defined by

\mathbb E(X):=\displaystyle\sum_xx\mathbb P(X=x)

where the summation is carried out over the support of X. So the mean is

\displaystyle\sum_{x=0}^nx\binom nxp^x(1-p)^{n-x}

Because this is a proper distribution, you have

\displaystyle\sum_x\mathbb P(X=x)=1

which is a fact that will be used to evaluate the sum above.

\displaystyle\sum_{x=0}^nx\binom nxp^x(1-p)^{n-x}
\displaystyle\sum_{x=1}^nx\binom nxp^x(1-p)^{n-x}
\displaystyle\sum_{x=1}^n\frac{xn!}{x!(n-x)!}p^x(1-p)^{n-x}
\displaystyle np\sum_{x=1}^n\frac{(n-1)!}{(x-1)!(n-x)!}p^{x-1}(1-p)^{n-x}
\displaystyle np\sum_{x=1}^n\frac{(n-1)!}{(x-1)!((n-1)-(x-1))!}p^{x-1}(1-p)^{(n-1)-(x-1)}

Letting y=x-1, this becomes

\displaystyle np\sum_{y=0}^{n-1}\frac{(n-1)!}{y!((n-1)-y)!}p^y(1-p)^{(n-1)-y}

Observe that the remaining sum corresponds to the PMF of a new random variable Y which also follows a binomial distribution with success probability p, but this time across n-1 trials. Therefore the sum evaluates to 1, and you're left with np as the expression for the mean for X.
3 0
4 years ago
1/2z +5=11 how to solve it plese??!
solong [7]
\frac{z}{2} + 5 = 11 \ / \ simplify \\ \\  \frac{z}{2} = 11 - 5 \ / \ subtract \ 5 \ from \ each \ side \\ \\  \frac{z}{2} = 6 \ / \ simplify \\ \\ x = 6 \times 2 \ / \ multiply \ each \ side \ by \ 2 \\ \\ z = 12 \ / \ simplify \\ \\

So, your answer to this problem is z = 12.
5 0
3 years ago
Read 2 more answers
Which of the following parametric equations are equivalent to the polar equation r=3 cos theta
Allushta [10]
To solve the problem you must know that to change from Cartesian to polar coordinates you must write:
 x = rcos (θ)
 Where "r" is the radius
 Likewise y = rsin (θ)
 Therefore, in the expression r = 3cos (θ) one can write r as:
 r = x / cos (θ)
 So:
 x / cos (θ) = 3cos (θ)
 x = 3cos ^ 2 (θ)
 The same for y ...
 y = rsin (θ)
 y = 3cos (θ) sin (θ).

  Finally the correct answer is option 2.
 x = 3cos ^ 2 (θ) y = 3cos (θ) sin (θ).
5 0
3 years ago
Read 2 more answers
Ella is going to drive from her house to city a without stopping. Ella’s house is 100 miles from city a and after driving three
aleksley [76]
Answer:
d = 100 - 25t

Step-by-step explanation:

Let's use basic logic here.
If we are 100 miles away from a place, and we've got 25 miles to go, we've already travelled 75 miles.
Since we've travelled 75 miles in 3 hours, then we travel at a rate of 75 divided by 3 = 25 miles per hour.

The distance to City A will be represented as 100 - miles already travelled. We can find how many miles have been travelled by multiplying 25 by t, the amount of hours we've spent driving.

This creates the equation d = 100 - 25t
Hope this helped!
8 0
3 years ago
Two Pairs Of Jeans Cost $75 before tax. If the total paid for the two pairs of jeans with tax was $81, what is the percentage of
Elden [556K]

Answer:

31%

Step-by-step explanation:

100- 75 = 25

25/81 = 0.308 = 31%

6 0
4 years ago
Read 2 more answers
Other questions:
  • What four factors were used to make this product game board 9. 15 18. 21 ? 30 35. 36 42 49
    10·2 answers
  • Please Help me with my Algebra​
    11·1 answer
  • Please help its urgent! 30 points!
    14·2 answers
  • Mona has invested $2840 in a savings account for 6 years. She earned $894.60 in a simple interest. What was the annual interest
    9·1 answer
  • Maggie has a ribbon 27 feet long. What is the length of the ribbon in yards? Equation : answer :
    5·1 answer
  • Joe has a part time job that he make $645.60 a month what expression could be used to find the amount Joe earns working any numb
    9·1 answer
  • A microwaveable cup-of-soup package needs to be constructed in the shape of cylinder to hold 700 cubic centimeters of soup. The
    14·1 answer
  • What is the distance between the points (−6, 2) and (−6, −11)?<br> A) 4 B) 5 C) 13 D) 17
    11·1 answer
  • Can Someone help me out
    15·1 answer
  • Question 4 and 5 pls. 30 points + brainliest to answer with explanation.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!