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
Pani-rosa [81]
2 years ago
13

Choose the correct answer from the given four options: In an AP, if d = –4, n = 7, an = 4, then a is *

Mathematics
1 answer:
BabaBlast [244]2 years ago
7 0

a = 28.

Step-by-step explanation:

{a}n = a  + (n - 1)d

4 = a + (7 - 1)( - 4)

4 = a + 6( - 4)

4 = a + ( - 24)

4 = a - 24

4 + 24 = a

28 = a

(OR)

a = 28.

You might be interested in
Applying descriptive statistics and data visualization to the training set to understand the data and assist in the selection of
lianna [129]

Answer:

i think it might be A

Step-by-step explanation:

4 0
3 years ago
Seventeen less than three times a number is less than four times the number decreased by nine.
maria [59]

Answer:  x > -8

Step-by-step explanation:

3x - 17 < 4x -  9   subtract 3x from both sides, and add 9 to both sides

<u> -3x + 9 < -3x + 9</u>

0  - 8   <  x  +  0      Rewrite and reverse the sign to simplify

     x > -8

     

6 0
3 years ago
What is the experimental probability of rolling a 3 or 4?
ohaa [14]

If it's 3 or 4 the probability is:

2/6 or 1/3

We call the outcomes in an event its "favorable outcomes". If a die is rolled once, determine the probability of rolling a 4: Rolling a 4 is an event with 1 favorable outcome (a roll of 4) and the total number of possible outcomes is 6 (a roll of 1, 2, 3, 4, 5, or 6). Thus, the probability of rolling a 4 is .

7 0
3 years ago
Please help urgently ​
Minchanka [31]

Answer:

-20

Step-by-step explanation:

Use the distributive property to get 2xy-14 (you multiply both xy and -7 by 2.) Now plug in the x and y values to get: 2(-1)(3)-14. This gets you -6-14 which is -20.

3 0
2 years ago
The random variable X has the following probability mass function.X -1 0 2 6 7P(x) 0.3 0.1 0.3 0.2 0.1Answer the next 4 question
olga2289 [7]

Answer:

Step-by-step explanation:

Given that X has the following pdf.

x -1 0 2 6 7 Total

P(X) 0.3 0.1 0.3 0.2 0.1 1

xP(X) -0.3 0 0.6 1.2 0.7 2.2

x^2P(X) 0.3 0 1.2 7.2 4.9 13.6

     

Var(x) 13.6-2.2^2  8.76    

Std dev   2.959729717    

5) P( -1 < X ≤ 2) = P(0)+P(2)\\= 0.1+0.3=0.4

6. Find the cumulative distribution function F(x) and calculate F(3.2) =

x -1 0 2 6 7

P(X) 0.3 0.1 0.3 0.2 0.1

F(x) 0.3 0.4 0.7 0.9 1

F(3.2) = P(X<3.2) = ___F(X<6) = 0.7__________

7. E(X) = ______2.2_____

8. Var(X) = ____8.76______

3 0
3 years ago
Other questions:
  • The number of girls, g, in a room is four more than two times the number of boys, b. Half of the number of girls in the room min
    11·1 answer
  • There is 16 pink stripes and green stripes. Find the ratio o pink stripes to green stripes
    14·1 answer
  • The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mea
    12·1 answer
  • What is the value of the expression 10z-3 when z=4?
    15·2 answers
  • Fei Yen's dog eats 8 ounces of dog food each day. Fei Yen bought a 28-pound bag of dog food. How many 8-ounce servings are in a
    7·2 answers
  • Find the area of a circle to the nearest thousandth, given it's equation: (x - 4)² + (y - 1)² = 76 (Pls..)
    8·1 answer
  • HELP!!! WILL MARK BRAINLIEST!
    15·2 answers
  • Which of the following is an example of a random event?
    8·2 answers
  • Please look at attached images
    15·2 answers
  • Will give brainliest!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!