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3 years ago

Complete the multiplication problem to find the answer

Mathematics

1 answer:

GrogVix [38]3 years ago

6 0

Answer:

Step-by-step explanation:

bc when you add the last 2 numbers (on the bottom) you get 8568 but then u have to add find the decimal places which would be 2 so it is b, 85.68

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A teacher teaches two classes with 8 students each. Each student has a 95% chance of passing their class independent of the othe

dsp73

Answer:

0.4466 = 44.66% probability that, in exactly one of the two classes, all 8 students pass.

Step-by-step explanation:

For each student, there are only two possible outcomes. Either they pass, or they do not. The probability of an student passing is independent of other students, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

Probability that all students pass in a class:

Class of 8 students, which means that $n = 8$

Each student has a 95% chance of passing their class independent of the other students, which means that $p = 0.95$

This probability is P(X = 8). So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 8) = C_{8,8}.(0.95)^{8}.(0.05)^{0} = 0.6634$

Find the probability that, in exactly one of the two classes, all 8 students pass.

Two classes means that $n = 2$

0.6634 probability all students pass in a class, which means that $p = 0.6634$ .

This probability is P(X = 1). So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 2) = C_{2,1}.(0.6634)^{1}.(0.3366)^{1} = 0.4466$

0.4466 = 44.66% probability that, in exactly one of the two classes, all 8 students pass.

3 0

3 years ago

16 / 4 * (3 - 1) a) 2 b) 4 c) 8

Luda [366]

Hello,

if :

$\frac{16}{4(3 - 1)} = \frac{16}{4 \times 2} = \frac{16}{8} = 2$

if :

$\frac{16}{4} \times (3 - 1) = 4(3 - 1) = 4 \times 2 = 8$

4 0

2 years ago

Read 2 more answers

If f(x)=1−x^2 +x^3 , then f(−1)=

Andrews [41]

Answer:

f(-1) = -1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Functions
Function Notation

Step-by-step explanation:

Step 1: Define

Identify

f(x) = 1 - x² + x³

f(-1) is x = -1 for the function f(x)

Step 2: Evaluate

Substitute in x [Function f(x)]: f(-1) = 1 - (-1)² + (-1)³
Exponents: f(-1) = 1 - 1 - 1
Subtract: f(-1) = -1

6 0

3 years ago

Elena has $7.60, all in nickels and quarters. She has 80 coins. How many coins of each type does she have?

tatyana61 [14]

Answer:

18 quarters and 62 nickels

Step-by-step explanation:

i spent like 10 minutes on this sorry if im late

7 0

3 years ago

I REALLY NEED HELP ON THIS PLEASE!!!!!!

liubo4ka [24]

Answer:

see attached for one possibility

Step-by-step explanation:

Graphs are equivalent if they have the same structure, but not necessarily the same labeling.

The graph given is one big loop with one of the edges doubled. An equivalent graph is one that can be drawn as one big loop with one of the edges doubled. The attachment shows one way to draw such a graph.

Renaming the vertices of the attached graph to A, C, D, B (clockwise from lower left) will make it equal to the given graph.

3 0

4 years ago