Answer:
Option A, B and E
Step-by-step explanation:
Determinant = ad-bc
Let's look at the picture and solve all
<u><em>Option A)</em></u>
If the row ( c and d ) is zero, the determinant will be zero
=> a(0)-b(0)
=> 0-0
=> 0 (So, True)
<u><em>Option B) </em></u>
If a = b = c = d (Let's say 1), the determinant will be
=> (1)(1)-(1)(1)
=> 1-1
=> 0 (So, True)
<u><em>Option C)</em></u>
An Identity matrix is
=>
So , it's determinant will be
=> (1)(1)-(0)(0)
=> 1-0
=> 1 (So, False)
<u><em>Option D)</em></u>
The determinant with matrix will all positive numbers can be negative as well as positive. This is not necessary that it would be positive. (So, False)
<u><em>Option E)</em></u>
A zero matrix is
=>
So, it's determinant is:
=> (0)(0)-(0)(0)
=> 0-0
=> 0 (So,True)
Answer:
The answer to this would be:
B) between 2.6 and 2.7
Step-by-step explanation:
The restaurant would have to give the free samples to its customers so that they would provide a feedback for the business.
<h3>What is feedback?</h3>
This is the word that is used to refer to the information that one has to create or give as way of reacting to the use of a product or of a new service.
This is a way of bringing about improvements or about bringing a new line into a new market. The customers in this case would have to tell the restaurant what they think about the new dish.
Read more on feedback here:
brainly.com/question/25653772
#SPJ1
Answer:
∠D = 76.8°
Step-by-step explanation:
Given that
∠A = 52x +16
∠B = 72x +20
∠C = 32x + 68
∠D = 32x + 40
We will assume that x represents the same value in all cases
Given that we are working with a quadrilateral, we know that all interior angles must equate to 360°.
To solve for x then, we will combine all angle measurements and equate them to 360°.
360 = 52x + 16 + 72x + 20 + 32x + 68 + 32x +40 Combine like terms
360 = 188x + 144 take 144 away from both sides
216 = 188x divide both sides by 188 to isolate x
1.15 = x
Using the equation for ∠D, we will plug 1.15 in for x
∠D = 32(1.15) + 40
∠D = 36.8 + 40
∠D = 76.8°