All categories

3 years ago

Help please ASAP!!!!!!!!!

Mathematics

1 answer:

Elden [556K]3 years ago

4 0

Answer:

b. -33

Step-by-step explanation:

The question is about finding the determinant of a 2×2 matrix

General formula; when given matrix A =[ b c ]

[ d e]

the determinant of A = (e×b)-(c×d)

Evaluate

(3 -3)

(-5 -6) = (-6×3) - ( -5×-3)

= (-18)- ( 15) = -33

You might be interested in

The volume of a cone is 16 pi cubic inches. Its height is 12 inches. What is the radius of the cone? 2 in. 4 in. 12 in. 16 in.

mart [117]

The radius of cone is 2 inches

Solution:

The volume of cone is given by formula:

$V = \frac{\pi r^2h}{3}$

Where,

"V" is the volume of cone

"r" and "h" are the radius and height of cone respectively

Given that, volume of a cone is 16 pi cubic inches

Its height is 12 inches

Therefore, we get,

V = $16 \pi$ cubic inches

h = 12 inches

r = ?

Substituting the values in formula, we get

$16 \pi = \frac{ \pi \times r^2 \times 12}{3}\\\\16 = 4r^2\\\\r^2 = 4\\\\r = \pm 2$

Since, radius cannot be negative, ignore r = -2

Thus radius of cone is 2 inches

8 0

3 years ago

Read 2 more answers

1 1/5 + 3/4 - (-3 3/5) - (-2 1/4)

babymother [125]

Step-by-step explanation:

$= 1 \frac{1}{5} + \frac{3}{4} - ( - 3 \frac{3}{5} ) - ( - 2 \frac{1}{4} )$

$= 1 \frac{1}{5} + \frac{3}{4} + 3 \frac{3}{5} + 2 \frac{1}{4}$

$= (1 + 3 + 2) + ( \frac{1}{5} + \frac{3}{4} + \frac{3}{5} + \frac{1}{4} )$

$= 6 + ( \frac{4 + 15 + 12 + 5}{20} )$

$= 6 + \frac{36}{20}$

$= 1 + 6 + \frac{16}{20}$

$= 7 + \frac{4}{5}$

$= 7 \frac{4}{5}$

8 0

3 years ago

Read 2 more answers

There are 7 days in 1 week. Some months consist of 30 days. How many weeks are there in 280 days.

notsponge [240]

There are 40 weeks in 280 days

3 0

3 years ago

Simplify the expression /-9/(3-2i)+(1+5i)

Elodia [21]

36+27i because /-9/ equals 9 so you distribute 9 in the parentheses then you add like terms

7 0

3 years ago

Helppppppppppppppppppppp

docker41 [41]

Answer:
1.796

Explanation:
log base 6 of 25 can be rewritten as:
log base 6 of (5^2) = 2 * log base 6 of 5
= 2 *0.8982
= 1.7965

Hope this helps :)

3 0

3 years ago