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4 years ago

Determine if the statement is true or false, and justify your answer.

Mathematics

1 answer:

boyakko [2]4 years ago

8 0

Answer:

Step-by-step explanation:

a) False. A rectangular matrix cannot have a determinant only square matrices can have determinants

b) False. Only square matrices have determinants and non square matrices do not have

c) True.

d) False. If it is a square matrix and every entry is 0 then determinant =0

e) False. If it is a square matrix determinant =0 since when two rows are identical the determinant value is 0.

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Can you help me i will mark brainliest

Sonja [21]

Answer:

1. 15

2. 3

3. 4

4. 2

5. $\frac{1}{8}$ , $\frac{1}{2}$ , $\frac{3}{4}$

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7. $\frac{3}{8}$

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2 years ago

Amy has $800 saved but withdraws $80 per week for gas and groceries

JulijaS [17]

Answer:

800-80w.

800-80(2)=800-160=640 left in 2 weeks.

800-80(3)=800-240=560

800-80(5)=800-400=400

800-80(7)=800-560=240

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Function: 800-80w

Range: 460

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4 years ago

What is the area of 60ft

ExtremeBDS [4]

Answer:

the area of 60ft is 60. :]

Step-by-step explanation:

8 0

4 years ago

-4x+3(5x+6)=7(2x+1)-3x

m_a_m_a [10]

-4x+15x+18=14x+7-3x

-4x+15x=11x

11x+18=14x-3x+7

14x-3x=11x

11x+7

11x+18=11x+7

Equations are different; No solution

xoxo

4 0

4 years ago

Read 2 more answers

Which is most likely the correlation coefficient for the set of data shown?

motikmotik

we know that

<u>The correlation coefficient </u>is a number between $-1$ and $+1$ that represent the linear dependence of two variables or sets of data

Let

$A(1,4)\ B(2,1.5)\ C(3,3)\ D(4,4)\ E(5,2)$

Using the function CORREL in a Excel tool

Find the correlation coefficient for the set of data

see the attached table

the correlation coefficient is $r=-0.20801$

therefore

<u>the answer is the option B</u>

$-0.21$

8 0

3 years ago

Read 2 more answers