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Dominik [7]
3 years ago
12

Jennie says the experimental probability that a 7th grade student reads at least 100 pages per week is 16/125. What is her error

and the correct experimental probability?
Mathematics
1 answer:
alukav5142 [94]3 years ago
6 0

Answer:

Egg

Step-by-step explanation:

Fg

You might be interested in
A stack of logs has 32 logs on the bottom layer. Each subsequent layer has 6 fewer logs than the previous layer. If the top laye
Svetlanka [38]

Answer:  The total number of logs in the pile is 6.

Step-by-step explanation:  Given that a stack of logs has 32 logs on the bottom layer. Each subsequent layer has 6 fewer logs than the previous layer and the top layer has two​ logs.

We are to find the total number of logs in the pile.

Let n represents the total number of logs in the pile.

Since each subsequent layer has 6 fewer logs then the previous layer, so the number of logs in each layer will become an ARITHMETIC sequence with

first term, a = 32  and  common difference, d = -6.

We know that

the n-th term of an arithmetic sequence with first term a and common difference d is

a_n=a+(n-10)d.

Since there are n logs in the pile, so we get

a+(n-1)d=2\\\\\Rightarrow 32+(n-1)(-6)=2\\\\\Rightarrow 32-6n+6=2\\\\\Rightarrow 6n=36\\\\\Rightarrow n=6.

Thus, the total number of logs in the pile is 6.

6 0
3 years ago
Adrian made 3 granola bars. He cut each bar into fourths. How many -size pieces of granola bar does Adrian have? Draw lines in t
Mademuasel [1]

Answer:

12 pieces

Step-by-step explanation:

Given the information:

  • Number of bars: 3
  • Number of equal parts cut in each bar: 4

=> total number of  size pieces of granola bar Adrian has is:

= Number of bars * Number of equal parts in each bars

= 3 * 4

= 12 pieces.

Please have a look at the attached photo (lines in the model to find the answer)

3 0
4 years ago
Which is the direct linear variation equation for the relationship?
Step2247 [10]
Y varies as x
y=kx
y=12 when x=4
12=k4
divide 4
3=k
y=3x is equation
answer is B
6 0
3 years ago
IM BEING TIMED, WILL GIVE 25 POINTS (NEEDED WITHIN THE NEXT 20 MINUTES The graph g(x)=x^3-x is shown. (idk how to screenshot, so
saveliy_v [14]

Answer:

The function is

f(x)=0.5x^3-3x^2+5.5x-2

The graph is attached.

Step-by-step explanation:

We have a function g(x) and we need to graph a new function that is function of g(x).

The final function is

f(x)=0.5\cdot g(x-2)+1

We start by calculating g(x-2):

g(x-2)=(x-2)^3-(x-2)\\\\g(x-2)=(x^3-6x^2+12x-8)-(x-2)\\\\g(x-2)=x^3-6x^2+11x-6

Then, we can calculate f(x) as:

f(x)=0.5\cdot g(x-2)+1\\\\g(x-2)=x^3-6x^2+11x-6\\\\\\f(x)=0.5(x^3-6x^2+11x-6)+1\\\\f(x)=0.5x^3-3x^2+5.5x-3+1\\\\\\f(x)=0.5x^3-3x^2+5.5x-2

5 0
3 years ago
Which is the solution to the system of equations?
Svetlanka [38]

Answer:

D. (-1, 3/2)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Distributive Property

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define System</u>

4x + 2y = -1

3x + 4y = 3

<u>Step 2: Rewrite System</u>

4x + 2y = -1

  1. [Multiplication Property of Equality] Multiply -2 on both sides:                     -2(4x + 2y) = 2
  2. [Distributive Property] Distribute -2 on both sides:                                        -8x - 4y = 2

<u>Step 3: Redefine Systems</u>

-8x - 4y = 2

3x + 4y = 3

<u>Step 4: Solve for </u><em><u>x</u></em>

  1. Combine equations:                                                                                         -5x = 5
  2. [Division Property of Equality] Divide -5 on both sides:                                x = -1

<u>Step 5: Solve for </u><em><u>y</u></em>

  1. Substitute in <em>x</em> [Original Equation]:                                                                  3(-1) + 4y = 3
  2. Multiply:                                                                                                             -3 + 4y = 3
  3. [Addition Property of Equality] Add 3 on both sides:                                     4y = 6
  4. [Division Property of Equality] Divide 4 on both sides:                                  y = 3/2
8 0
3 years ago
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