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
RSB [31]
3 years ago
10

Evaluate the expression when a=9. 2a2

Mathematics
2 answers:
NemiM [27]3 years ago
8 0
36 because 9x2 is 18 and 18x2 is 36
guapka [62]3 years ago
5 0

Answer:

36

Step-by-step explanation:

Substitute the A for the 9, since A=9, and multiply the numbers

You might be interested in
How do you calculate the midpoint of question e)? I am very desperate. please help
andrey2020 [161]

Answer:

(-1,-1)

Step-by-step explanation:

Midpoint equation: (\frac{x_2+x_1}{2}, \frac{y_2+y_1}{2})

= (\frac{-5/2+1/2}{2},\frac{-1/2-3/2}{2} )

= (\frac{-2}{2},\frac{-2}{2})

=(-1,-1)

Use the formula and plug it in :)

7 0
3 years ago
Consider a game in which a participant pays $2 to roll a die. The participant receives $3 if they roll a 1 (i.E. They go up by a
Sauron [17]

Answer:

The expected monetary value of a single roll is $1.17.

Step-by-step explanation:

The sample space of rolling a die is:

S = {1, 2, 3, 4, 5 and 6}

The probability of rolling any of the six numbers is same, i.e.

P (1) = P (2) = P (3) = P (4) = P (5) = P (6) = \frac{1}{6}

The expected pay for rolling the numbers are as follows:

E (X = 1) = $3

E (X = 2) = $0

E (X = 3) = $0

E (X = 4) = $0

E (X = 5) = $0

E (X = 6) = $4

The expected value of an experiment is:

E(X)=\sum x\cdot P(X=x)

Compute the expected monetary value of a single roll as follows:

E(X)=\sum x\cdot P(X=x)\\=[E(X=1)\times \frac{1}{6}]+[E(X=2)\times \frac{1}{6}]+[E(X=3)\times \frac{1}{6}]\\+[E(X=4)\times \frac{1}{6}]+[E(X=5)\times \frac{1}{6}]+[E(X=6)\times \frac{1}{6}]\\=[3\times \frac{1}{6}]+[0\times \frac{1}{6}]+[0\times \frac{1}{6}]\\+[0\times \frac{1}{6}]+[0\times \frac{1}{6}]+[4\times \frac{1}{6}]\\=1.17

Thus, the expected monetary value of a single roll is $1.17.

7 0
3 years ago
Which lines are parallel? Check all that appley
7nadin3 [17]

Answer:

Do you have a diagram? I cant help you if you have a diagram.

Step-by-step explanation:

4 0
3 years ago
Indicate by choosing the correct option
GREYUIT [131]
A true or false question is a question that gives you a statement, and asks whether it's true (correct) or false (wrong).
8 0
3 years ago
Two trains are 500 miles apart when they first enter a collision course. If, after two hours, the distance between them is 300 m
deff fn [24]
60 miles per hour. In two miles the sum of the distance the two trains traveled was 200 miles, you divide that by 2, the sum of the speed of the two trains is 100 miles per hour, now put the speed of the slow train as  x and the fast as x +20, the sum of x and x +20 is 100, so 2x + 20 =100, you subtract 20 from both sides, 2x = 80, divide by 2, x = 40, the problem asks for the speed of the fast train, so, x + 20 is 60.
6 0
3 years ago
Read 2 more answers
Other questions:
  • How do I get 31 to be my answer with placing parentheses somewhere in this expression
    5·1 answer
  • Please help with this problem ​
    11·2 answers
  • What is the solution of y − 4x = 0 and 3x + 6y = 9?
    14·1 answer
  • (15 points) will mark the brainiest. Answer quickly and correctly!
    13·1 answer
  • 6 times 7 -3 squared by 2 times 9 +4 squared by 3
    10·2 answers
  • Which side lengths could be the sides of a triangle? * A. 11.4, 11.4, 22.8 B. 21, 29, 39 C. 7, 9, 18 D. 3, 9, 16
    14·1 answer
  • -10x = -210 how would i find this answer?
    6·2 answers
  • HELPPPPP FAST!!! <br> Find the volume, round your answer to the nearest tenth.<br> 9 yd<br> 7 yd
    10·2 answers
  • If m&lt;BDC = 20, m arc AB = 140, and marc CD = 120, find m&lt;1.<br><br>​
    9·2 answers
  • What is the total number of different routes that a fire
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!