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3 years ago

How do you work out coefficient of x

Mathematics

1 answer:

SOVA2 [1]3 years ago

3 0

its easy

Step-by-step explanation:

coefficient-the final answer

x-unknow number

lets say you have

x by 20 =y

y=5

and you type

x.20=5

x=20:5

x=4

the coeficient is 4

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3 years ago

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Which is the first step in solving<br> X-2 = 2?

Vanyuwa [196]

Answer:

The first step is to find a number that when subtracted from 2 gives you 2.

Step-by-step explanation:

The algebraic part of this problem would be to add the -2 (adding 2 to both sides) to both sides, so

first x-2=2, then x-2(+2)=2(+2) which would give us,

x=4

*note: the parenthesis are just to show that we are adding the 2, to make it more understandable.

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4 years ago

What is the area of the figure?<br> Enter your answer in the box.<br> in2

Setler [38]

Answer:

The bottom edge of the right triangle is: 16in -10in = 6in

So the area of the triangle is: S1 = 1/2 (a x b) = 24/2 = 12m2

the area of a square is: S2 = a ^ 2 = 10 ^ 2 = 100m2

The total area of the figure is: S1 + S2 = 12 + 100 = 112 m2

Step-by-step explanation:

4 0

3 years ago

QUESTION 63 Which set of data best represents this histogram? a histogram with 4 bars, the bar labeled 0-9 has a height of 5, th

MAXImum [283]

Question 63:

We have to identify a set of data best which represents a histogram with 4 bars, the bar labeled 0-9 has a height of 5, the bar labeled 10-19 has a height of 3, the bar labeled 20-29 has a height of 6, the bar labeled 30-39 has a height of 4.

Let us observe the four data sets:

1. In the first data set, there are 9 values in the interval 0 to 9 instead of 5 values. This set does'not represents the given histogram.

2. In the second data set, there are 4 values in the interval 20 to 29 instead of 6 values. This set does'not represents the given histogram.

3. In the third data set, there are 6 values in the interval 0 to 9 instead of 5 values. This set does'not represents the given histogram.

4. In the fourth data set, there are 5 values in the interval 0 to 9, 3 values in the interval 10 to 19, 6 values in the interval 20 to 29, 4 values in the interval 30 to 39. Therefore, this data represents the given histogram.

Option 4 is the correct answer.

Question 64:

We have to find the lower quartile (Q1), median (Q2) and upper quartile (Q3).

{20, 22, 22, 24, 26, 28, 29, 32, 33, 35}

Firstly, we will arrange the numbers in ascending order.

{20,22,22,24,26,28,29,32,33,35}

Since there are total 10 terms. There are even terms.

So, median = Mean of ( $\frac{n}{2}$ ) and ( $\frac{n}{2}$ )+1 th observation

As, $\frac{n}{2}=\frac{10}{2}=5$

So, Median =mean of 5th and 6th observation.

Mean = sum of all the observations divided by the total number of observations.

Mean = $\frac{26+28}{2}$

Median = 27.

SO, the median (Q2) is 27.

Now to calculate Q1(Iower quartile),

Consider the data set {20,22,22,24,26}

Q1 is calculated by taking the middle term of first half data set, which is 22.

Now to calculate Q2(upper quartile),

Consider the data set {28,29,32,33,35}

Q3 is calculated by taking the middle term of second half data set, which is 32.

Question:

Consider the given matrix:

$\left[\begin{array}{ccc}2&1\\0&5\\3&4\end{array}\right]$

We need to find the dimension of the matrix.

A matrix " $m \times n$ " mean it is a matrix with 'm' rows and 'n' columns.

Since, in this matrix there are 3 rows and 2 columns.

So, the dimension of the matrix is $3 \times 2$ .

So, option C is the correct answer.

6 0

3 years ago