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
babunello [35]
2 years ago
15

Helppp please i have to get atleast an 80 on the test

Mathematics
1 answer:
Law Incorporation [45]2 years ago
5 0

Answer:

B

Step-by-step explanation:

-25 for every hour used and it starts with 100 and it goes down by 25 every hour its being used.

You might be interested in
Write a function G whose graph represents a reflection in the y-axis of the graph of f (x) = |2x–1|+3
crimeas [40]

Answer: Did you find an answer yet?? Lol

Step-by-step explanation:

8 0
3 years ago
The first term in a sequence is 5. Each new term in the sequence is obtained by adding 4 to the previous term. Determine an equi
ycow [4]

Answer:

4x+1

Step-by-step explanation:

3 0
2 years ago
A professor has learned that three students in his class of 20 will cheat on the final exam. He decides to focus his attention o
balu736 [363]

Answer:

a

P(X \ge 1) = 0.509

b

P(X  \ge 1) = 0.6807

Step-by-step explanation:

From the question we are told that

   The number of students in the class is  N  =  20  (This is the population )

   The number of student that will cheat is  k =  3

   The number of students that he is focused on is  n  =  4

Generally the probability distribution that defines this question is the  Hyper geometrically distributed because four students are focused on without replacing them in the class (i.e in the generally population) and population contains exactly three student that will cheat.

Generally  probability mass function is mathematically represented as

      P(X = x) =  \frac{^{k}C_x * ^{N-k}C_{n-x}}{^{N}C_n}

Here C stands for combination , hence we will be making use of the combination functionality in our calculators  

Generally the that  he finds at least one of the students cheating when he focus his attention on four randomly chosen students during the exam is mathematically represented as

      P(X \ge 1) =  1 - P(X \le 0)

Here  

   P(X \le 0) =  \frac{ ^{3} C_0 *  ^{20 - 3} C_{4- 0}}{ ^{20}C_4}

   P(X \le 0) =  \frac{ ^{3} C_0 *  ^{17} C_{4}}{ ^{20}C_4}

   P(X \le 0) =  \frac{ 1 *  2380}{ 4845}

    P(X \le 0) =  0.491

Hence

    P(X \ge 1) =  1 - 0.491

     P(X \ge 1) = 0.509

Generally the that  he finds at least one of the students cheating when he focus his attention on six randomly chosen students during the exam is mathematically represented as

    P(X \ge 1) =  1 - P(X \le 0)

   P(X  \ge 1) =1- [  \frac{^{k}C_x * ^{N-k}C_{n-x}}{^{N}C_n}]

Here n =  6

So

    P(X  \ge 1) =1- [  \frac{^{3}C_0 * ^{20 -3}C_{6-0}}{^{20}C_6}]

    P(X  \ge 1) =1- [  \frac{^{3}C_0 * ^{17}C_{6}}{^{20}C_6}]

    P(X  \ge 1) =1- [  \frac{1  *  12376}{38760}]

    P(X  \ge 1) =1- 0.3193

    P(X  \ge 1) = 0.6807

   

5 0
3 years ago
Giovanni was playing with blocks and started with one blue triangular block and kept adding more
raketka [301]

Blocks would he need on the 12th step of the pattern is 34.

The correct option is A

<h3></h3><h3>What is series?</h3>

A series is the cumulative sum of a given sequence of terms.

Given:

We can write the series as follows:

1,4,7,10,13,.......

First term =1

common difference= 4-1=3

Using Arithmetic series

a_{12}\\= a+11d

    =  1 +11*3

    = 1+33

    = 34.

Hence, 34 blocks need on 12th step.

Learn more about arithmetic series here:

brainly.com/question/2171130

#SPJ1

7 0
2 years ago
How many meters is 4 feet?
Alenkasestr [34]
1.2192 meters in 4 feet
5 0
2 years ago
Read 2 more answers
Other questions:
  • There are 42 sixth-grade students and 60 fifth-grade students participating in an event. The students will be put into groups am
    11·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Csqrt%7B4x%2B1%7D-5%3D0%5C%5C%5C%5C%5C%5C%5C%5C%5Csqrt%7B5x-1%7D%2B3%3Dx%5C%5C" id="TexFormu
    5·1 answer
  • the area of a parallelogram is 96 cm squared. The height of the parallelogram is 4 cm less than the length of the base. What is
    11·2 answers
  • HELLLLLLLLLLLLLLPPPPPP MEEEEEEEEEEEEEEE!!!!!!!!!!!
    13·2 answers
  • Ieda and Thanh both offer piano lessons. Ieda charges an initial fee of $8.50 and an hourly rate of $11.00. Thanh charges an ini
    10·2 answers
  • ) Would you rather receive $1,500 a year for 12 years, or $1,200 a year for 20 years if the interest rate is 7%?
    11·1 answer
  • . Which of the following is the correct algebraic representation of the translation below?
    15·1 answer
  • ASAP NEED HELP THX !! Look at picture
    7·1 answer
  • Please give this one a go! I need it ASAP. Thank you for your time
    13·1 answer
  • Which expression is equal to 632?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!