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2 years ago

Please help me answer question 6/11

Mathematics

1 answer:

Law Incorporation [45]2 years ago

7 0

The value of a₄₁ mean the expression in 4th row and 1st column will be 2. Then the correct option is B.

The complete question is attached below.

<h3>What is the matrix?</h3>

A matrix is a specific arrangement of items, particularly numbers. A matrix is a row-and-column mathematical structure. The $\rm a_{ij}$ element in a matrix, such as M, refers to the i-th row and j-th column element.

The matrix is given below.

$\begin{bmatrix} 1&3&8&5&\\ 5&4&6&2\\6&7&1&8\\2&9&3&7&\\\end{bmatrix}$

Then the value of a₄₁ mean the expression in 4th row and 1st column will be 2.

Then the correct option is B.

More about the matrix link is given below.

brainly.com/question/9967572

#SPJ1

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A local yoga studio charges a sign-fee of $55 plus $10 per class. The second year was studio charges assignment fee of $25 plus

ASHA 777 [7]

Yoga Studio A: y=10(10)+55, y=155
Yoga Studio B: y=12.5(10)+25, y=150.
These two numbers are not equal, so Gigi is wrong.

4 0

3 years ago

The length of a rectangle is 4 more than its width. The area of the rectangle is 21m2 . What is the measure of the width?

iris [78.8K]

Length(l)= 4+ w
Width(w)=w
Area(A)= 21m^2

so keep in mind Area= Length × width

A= l×w
21=(4+w)(w)
21= 4w+ 2w
21=6w
w=3.5

The width is 3.5m

so the answer is about 4m

6 0

4 years ago

Read 2 more answers

People tend to evaluate the quality of their lives relative to others around them (Frieswijk et al., 2004). In one study, resear

Alborosie

Answer:

Step-by-step explanation:

Hello!

Research.

n=9 frail elderly were interview and compared to a fictitious person who was worse off then the interviewee, a life-satisfaction score was determined for each person.

18, 23, 24, 22, 19, 27, 23, 26, 25

Assuming that the population average score is μ= 20, the researchers think that the elderly in the sample are more or less satisfied than others in the general population.

a. You have the information of one sample, assuming this sample has a normal distribution and each elderly interviewed is independent, then the t-test of choice is a one-sample t-test.

b. and c. If you say that the elderly are "more or less" satisfied than the others, this means that they are either as satisfied as to the general population or not satisfied as to the general population. Symbolically:

H₀: μ = 20

H₁: μ ≠ 20

This is a two-tailed test, meaning, you will have two critical regions.

α: 0.05

Left critical value: $t_{n-1;/\alpha 2} = t_{8; 0.025}= -2.306$

Right critical value: $t_{n-1;1-\alpha /2} = t_{8;0.975} = 2.306$

$t_{H_0}= \frac{X[bar]-Mu}{\frac{S}{\sqrt{n} } } ~t_{n-1}$

X[bar]= 23

S= 3

$t_{H_0}= \frac{23-20}{\frac{3}{\sqrt{9} } }= 3$

Considering that the calculated t-value is greater than the right critical value, the decision is to reject the null hypothesis, so using a significance level of 5% you can conclude that the average life-satisfaction score of the elderly is different than 20.

I hope it helps!

7 0

3 years ago

14. Write a linear equation to represent the sequence 3, 7, 11, 15, ….

Amiraneli [1.4K]

Answer:

RECURSIVE: f(n)=f(n-1)+4

EXPLICIT: f(n)=3+4n

6 0

3 years ago

Will mark brainliest if right. Thank you.

Delicious77 [7]

Answer:

Step-by-step explanation:

sides of triangle are (4+3) and (2+3)

or 7,5

area of triangle=1/2×7×5=35/2=17.5 cm²

area of rectangle=3×2=6 cm²

area of shaded region=17.5-6=11.5 cm²

4 0

3 years ago