Ask question

Ask question

All categories

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?

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

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
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

[Multiplication Property of Equality] Multiply -2 on both sides: -2(4x + 2y) = 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>

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

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

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

8 0

3 years ago