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
LenKa [72]
3 years ago
15

Rachel moved a point from the origin 3 units left on the x-axis. Then, she moved it up 2 units on the y-axis. What is the new lo

cation of the point?
Mathematics
1 answer:
strojnjashka [21]3 years ago
6 0

Answer:

(-3,2)

Step-by-step explanation:

If it moved 3 units left, that means the new point's x-coordinate is -3.

If it moved 2 units up, that means the new point's y-coordinate is 2.

Therefore, if the new point's x-coordinate is -3 and y-coordinate is 2, we can represent the point as (-3,2)

You might be interested in
Solve the problem below: 624+ 34+ 312+ 85=​
viktelen [127]
1055 is what i got. have a good day!
7 0
2 years ago
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B4%5D%7B98%7D%20" id="TexFormula1" title=" \sqrt[4]{98} " alt=" \sqrt[4]{98} " ali
allsm [11]
In decimal form it’s 3.146
4 0
3 years ago
The height is 12 feet. The length is 15 feet. The hypotenuse is 20 feet. Which is true regarding the triangular frame?
olya-2409 [2.1K]

Answer:

The 3rd from the choices is correct.

4 0
3 years ago
What is the formula for the expected number of successes in a binomial experiment with n trials and probability of success​ p? C
charle [14.2K]

Answer:

(D)E[ X ] =np.

Step-by-step explanation:

Given a binomial experiment with n trials and probability of success​ p,

f(x)=\left(\begin{array}{c}n\\k\end{array}\right)p^x(1-p)^{n-x}, 0\leq  x\leq n

E(X)=\sum_{x=0}^{n}xf(x)= \sum_{x=0}^{n}x\left(\begin{array}{c}n\\k\end{array}\right)p^x(1-p)^{n-x}

Since each term of the summation is multiplied by x, the value of the term corresponding to x = 0 will be 0. Therefore the expected value becomes:

E(X)=\sum_{x=1}^{n}x\left(\begin{array}{c}n\\x\end{array}\right)p^x(1-p)^{n-x}

Now,

x\left(\begin{array}{c}n\\x\end{array}\right)= \frac{xn!}{x!(n-x)!}=\frac{n!}{(x-)!(n-x)!}=\frac{n(n-1)!}{(x-1)!((n-1)-(x-1))!}=n\left(\begin{array}{c}n-1\\x-1\end{array}\right)

Substituting,

E(X)=\sum_{x=1}^{n}n\left(\begin{array}{c}n-1\\x-1\end{array}\right)p^x(1-p)^{n-x}

Factoring out the n and one p from the above expression:

E(X)=np\sum_{x=1}^{n}n\left(\begin{array}{c}n-1\\x-1\end{array}\right)p^{x-1}(1-p)^{(n-1)-(x-1)}

Representing k=x-1 in the above gives us:

E(X)=np\sum_{k=0}^{n}n\left(\begin{array}{c}n-1\\k\end{array}\right)p^{k}(1-p)^{(n-1)-k}

This can then be written by the Binomial Formula as:

E[ X ] = (np) (p +(1 - p))^{n -1 }= np.

5 0
3 years ago
Triangle ABC is similar to triangle DBE.
allsm [11]

Answer:

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 238 days a
    11·1 answer
  • Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre
    12·1 answer
  • Round 7.6378 to the nearest 0.1
    13·2 answers
  • PLZ HELP ASAP FEATURES OF A CIRLE FROM EXPANDED EQUATION
    9·1 answer
  • It takes Lee Ann 15.2 min to walk 1 mile. How long does it take her to walk 4.34 miles?
    5·2 answers
  • Do protists reproduce sexually or asexually?
    14·2 answers
  • Help me with this question please
    12·1 answer
  • HELP ME WITH MY MATH ( two questions)
    11·1 answer
  • Please help
    12·1 answer
  • Can someone help me do 13, 14 and 15 thank u
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!