3 years ago

Evaluate the determinant for the following matrix: Please help !!!

Mathematics

1 answer:

Step2247 [10]3 years ago

5 0

The answer would be A

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Yeah uh I have no idea how to do this.....

Liula [17]

Answer:

9b /a^5/2

Step-by-step explanation:

9√(a^-5 b^2)

9 sqrt( a^ -5 b^2)

Rewriting sqrt as ^1/2

9 ( a^ -5 b^2)^1/2

9 ( a^ -5) ^1/2 ( b^2)^1/2

we know that an exponent to an exponent means multiply

9 a^ (-5*1/2) b^(2*1/2)

9 a^-5/2 b^1

9b a^ -5/2

We know that x^-y = 1/x^y

9b /a^5/2

4 0

3 years ago

Read 2 more answers

Factor the expression completely. 4x+2

qwelly [4]

Answer:

2(2x+1)

Step-by-step explanation:

4x and 2 are both divisible by 2.

5 0

3 years ago

Plot the points (-5, 10), (2,

Archy [21]

Answer:

A rectangle.

Step-by-step explanation:

The point are plotted on a coordinate plane, whose outcome is presented in the image enclosed below. The figure resembles a rectangle, as all internal angles are right-angled.

7 0

3 years ago

Suppose you spend $23 and you pay with a $50 bill. The cashier gives you your change in bills. List all the different ways you c

Bess [88]

2-10s 1-5 2-1s or 3-5s 1-10 2-1

8 0

3 years ago

40Points? CORRECT answer please

irina [24]

Answer:

Step-by-step explanation:

$f(t)=2(0.4)^t$

f(-2) → put t = -2 to the equation of the function:

$f(-2)=2(0.4)^{-2}=2\left(\dfrac{4}{10}\right)^{-2}=2\left(\dfrac{2}{5}\right)^{-2}$

Use $a^{-n}=\left(\dfrac{1}{a}\right)^n$

$f(-2)=2\left(\dfrac{5}{2}\right)^2=2\left(\dfrac{25}{4}\right)=\dfrac{25}{2}=12.5$

3 0

3 years ago