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
Irina-Kira [14]
3 years ago
15

Anyone know how to do this??!?!

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
7 0
Add all the numbers of the triangle and then divide them by the sides 

You might be interested in
A popular computer card game keeps track of the number of games played and the number of games won on that computer. The cards a
kari74 [83]

Answer:

(D) Two players of equal skill level each played one game a day for 50 days and their skill level did not change from day to day.

Step-by-step explanation:

(A) If the player's skill improves over time, the likelihood of him winning the game also increases and, therefore, this scenario cannot be modeled by a random binomial probability.

(B) Since the players have different skill levels, the likelihood of winning each game would change between players, thus X is not a binomial random variable.

(C) Same explanation as alternative B  

(D) Since both players have the same constant skill level throughout all games, the likelihood of winning each of the 100 games is the same; therefore, X is a binomial random variable

(E) Same explanation as alternatives B and C  

5 0
3 years ago
Darlene went out to eat with her friends on Monday. She spent $14.89 on her meal. She wants to leave a 15% tip. Write an express
cluponka [151]

29. because If you add 15 and 14 you will get that answer

4 0
3 years ago
Show that the sets of upper-triangular and lower-triangular matrices are subspaces of F n,n . Call them U and L respectively. Wh
soldi70 [24.7K]

Answer:

dim L = dim U = \frac{n(n+1)}{2}

Step-by-step explanation:

We can do it only for the lower-triangular matrices, the case of the upper-triangular matrices is similar. We might caracterice nxn the lower-triangular matrices, as the nxn matrices A=(a_{ij}) such that the entry a_{ij}=0 if i<j.

Now let A=(a_{ij}) and B=(b_{ij}) be two lower triangular matrices, now if

C=A+\lambda  B for some \lambda \in \mathbb{F}

then the entry c_{ij} of C is equal to

c_{ij}=a_{ij}+\lambda b_{ij}

Now, if i<j, it must hold that a_{ij}=0 \quad \text{and} \quad b_{ij}=0. Therefore, if this is the case we must have that c_{ij}=0 and so we get that C is also a lower triangular matrix. This showa that L is closed under sum and scalar multiplcation, hence it is a linear subspace.

To find the dimension, note that all the entries of a lower-triangular matrix over the diagonal must be equal to zero. However, each entry of the matrix under the diagonal and in the diagonal might be any element of \mathbb{F}, any entry that can be choosen add up to the dimension of L, we n such elemnts for the first column, (n-1) for the second column, (n-2) for the third column etc.... Therefore,

\dimL=n+(n-1)+(n-2)+...+2+1=\dfrac{n(n+1)}{2}

5 0
3 years ago
8.5 hours in a day what total hours they work in a week
liraira [26]

Answer:

8.5 hrs * 5 day work week = 42.5 hrs. But usually 0.5 hr per day is considered lunch and is usually not payed so theoretically the workweek is only 40 hrs per week (full time)

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Find F(-3) F(X)=2x^2-5x-8
aliya0001 [1]

Answer:

;-;

Step-by-step explanation:


5 0
3 years ago
Other questions:
  • Identify the value of x that makes each pair of ratios equivalent 6 to 8 and 18 to x
    6·1 answer
  • Can anybody help me on this?
    14·2 answers
  • Please help find the value of the expression and show work thank you
    14·2 answers
  • In a bag, there are only red, white and yellow counters.
    7·1 answer
  • What is the percent of change from 100 to 27?
    12·1 answer
  • You roll a 6-sided number cube. What is the probability that you do not roll a 2?
    6·1 answer
  • Help please! im begging you D:​
    9·2 answers
  • Which is the y-intercept of the graph of the linear function shown?
    15·2 answers
  • In January Todd was able to lift 127 1/2 lb. In February he could lift 135 lb, and in March he could lift 142 1/2 lb. If he cont
    15·1 answer
  • Which measure is of an angle that is coterminal with a 425° angle?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!