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4 years ago

What is 460+185+240?

Mathematics

2 answers:

jenyasd209 [6]4 years ago

4 0

885 i think :) 460 +185= 645 645 + 240=885

Sedaia [141]4 years ago

3 0

the answer is 885 and I used a calculator so you should be good :)

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There are a total of 63 bikes, if ratio of blue bikes to Black is 4 to 5 how many bikes are blue

Alexus [3.1K]

Answer:

28 bikes are blue

Step-by-step explanation:

Set up the ratio:

Blue : Black

4 : 5

Find the total # of bikes in the ratio:

4 + 5 = 9

Find the relationship between 63 and 9:

63/9 = 7

Multiply both sides of the ratio by 7:

4(7) = 28

5(7) = 35

28 : 35

Therefore, the number of blue bikes is 28.

5 0

3 years ago

Suppose the professor decides to grade on a curve. If the professor wants 16% of the students to get an A, what is the minimum s

vladimir1956 [14]

There isn't enough info to determine that, I believe. You would need an equation that would allow me to determine the minimum output for an A.

3 0

3 years ago

Exercise 7.3.5 The following is a Markov (migration) matrix for three locations        1 5 1 5 2 5 2 5 2 5 1 5 2 5 2 5 2

fredd [130]

Answer:

Both get the same results that is,

$\left[\begin{array}{ccc}140\\160\\200\end{array}\right]$

Step-by-step explanation:

Given :

$\bf M=\left[\begin{array}{ccc}\frac{1}{5}&\frac{1}{5}&\frac{2}{5}\\\frac{2}{5}&\frac{2}{5}&\frac{1}{5}\\\frac{2}{5}&\frac{2}{5}&\frac{2}{5}\end{array}\right]$

and initial population,

$\bf P=\left[\begin{array}{ccc}130\\300\\70\end{array}\right]$

a) - After two times, we will find in each position.

$P_2=[P].[M]^2=[P].[M].[M]$

$M^2=\left[\begin{array}{ccc}\frac{1}{5}&\frac{1}{5}&\frac{2}{5}\\\frac{2}{5}&\frac{2}{5}&\frac{1}{5}\\\frac{2}{5}&\frac{2}{5}&\frac{2}{5}\end{array}\right]\times \left[\begin{array}{ccc}\frac{1}{5}&\frac{1}{5}&\frac{2}{5}\\\frac{2}{5}&\frac{2}{5}&\frac{1}{5}\\\frac{2}{5}&\frac{2}{5}&\frac{2}{5}\end{array}\right]$

$=\frac{1}{25} \left[\begin{array}{ccc}7&7&7\\8&8&8\\10&10&10\end{array}\right]$

$\therefore\;\;\;\;\;\;\;\;\;\;\;P_2=\left[\begin{array}{ccc}7&7&7\\8&8&8\\10&10&10\end{array}\right] \times\left[\begin{array}{ccc}130\\300\\70\end{array}\right] = \left[\begin{array}{ccc}140\\160\\200\end{array}\right]$