All categories

3 years ago

Please help im confused

Mathematics

2 answers:

Korvikt [17]3 years ago

8 0

28.7% is your answer

Gnesinka [82]3 years ago

3 0

74/258 = %/100 , cross multiply 74 times 100 then divide by 258 = 28.6821705 , rounding it gets you to 28.7%. The answer is D.

You might be interested in

In a class of students, the following data table summarizes the gender of the students

sergij07 [2.7K]

Answer:

1/2

Step-by-step explanation:

Has A 4+8=12

All together 12+12=24

Probability to have A 12/24 or 1/2

5 0

3 years ago

What's 2/3 divided by 5

gtnhenbr [62]

Answer:2/15

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Express 9.25. as a fraction in its simplest form<br>

Olenka [21]

Answer:

9 1/4

Step-by-step explanation:

9.25-9=0.25

0.25 =1/4

9 1/4

7 0

3 years ago

A= [2, 3; 2, 1], B=[3; 5]. Find AB & BA if possible

oksano4ka [1.4K]

Answer:

The value of AB is $\left[\begin{array}{ccc}21\\11\end{array}\right]$ and it's not possible to multiply BA.

Step-by-step explanation:

Consider the provided matrices.

$A=\left[\begin{array}{ccc}2&3\\2&1\end{array}\right]$ , $B=\left[\begin{array}{ccc}3\\5\end{array}\right]$

Two matrices can be multiplied if and only if first matrix has an order m × n and second matrix has an order n × v.

Multiply AB

Matrix A has order 2 × 2 and matrix B has order 2 × 1. So according to rule we can multiply both the matrix as shown:

$AB=\left[\begin{array}{ccc}2&3\\2&1\end{array}\right] \left[\begin{array}{ccc}3\\5\end{array}\right]$

$AB=\left[\begin{array}{ccc}2\times 3+3\times 5\\2\times 3+1\times 5\end{array}\right]$

$AB=\left[\begin{array}{ccc}6+15\\6+5\end{array}\right]$

$AB=\left[\begin{array}{ccc}21\\11\end{array}\right]$

Hence, the value of AB is $\left[\begin{array}{ccc}21\\11\end{array}\right]$

Now calculate the value of BA as shown:

Multiply BA

Matrix B has order 2 × 1 and matrix A has order 2 × 2. So according to rule we cannot multiply both the matrix.

We can multiply two matrix if first matrix has an order m × n and second matrix has an order n × v.

That means number of column of first matrix should be equal to the number of rows of second matrix.

Hence, it's not possible to multiply BA.

5 0

3 years ago

jaoan reads that themass of an average elephant's brain is 3 4/10 kilograms greater than an average man's brain. how many kilogr

e-lub [12.9K]

How many kilograms is a average man's brain?

6 0

3 years ago