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3 years ago

15

WILL GIVE BRAINLIEST AND 20 POINTS! What is the correct formula for the value of the determinant? A. ab - cd B. ab + cd C. ad -

cb D. ad + cb

1 answer:

sasho [114]3 years ago

3 0

Answer:

Option C

Step-by-step explanation:

In the matrix, the determinant is the difference between the opposite elements multiplied.

So, the opposite elements multiplied will give us:

=> ad,bc

The difference is

=> ad-bc

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A region is bounded by y=e−3x, the x-axis, the y-axis and the line x = 3. If the region is the base of a solid such that each cr

grigory [225]

Answer:

0.333 $\pi$ units³

Step-by-step explanation:

Think process:

The equation is given as y = $e^{-3x}$

Let, y = f (x)

Therefore, $f (x) = e^{-3x}$

We know that the limits are y-axis and x= 3

Y-axis: x= 0

then limits are given as x= 0 and x = 3

Integrating gives:

$\int\limits^3_0 {e^{-3x} } \, dx$ = $\frac{-1}{3}e^{-3x}$ + C

calculating from x= 0 to x = 3, we know volume is given by $\pi \int\limits^a_b {f(x)} \, dx$

= $\pi$ [ $\frac{-1}{3} e^{-9} - (\frac{-1}{3} e^{0})$ ]

= $\pi$ [0.000041136 + 1/3]

= 0.333 $\pi$ units³

8 0

3 years ago

Kelly has 4 times as many songs on her music

Korolek [52]

Answer:

<h2>248 Songs</h2>

Step-by-step explanation:

<h3>Step 1; Set up an equation</h3>

4l + 6l + l = 682

<h3>Step 2: Add like terms</h3>

11l = 682

<h3>Step 3: Divide by 11</h3>

l = 62

Lou has 62 songs

<h3>Step 4: Multiply by 4</h3>

Kelly has 248 songs

<h3>Step 5: Check</h3>

Kelly has 248 songs

Lou has 62 songs

Tiffany has 372 songs

Is 248 4 times 62? ✔

Is 372 6 times 62? ✔

Is 248 + 372 + 62 = 682? ✔

<h3>Step 6: Answers</h3>

Kelly has 248 songs

Lou has 62 songs

Tiffany has 372 songs

I'm always happy to help :)

8 0

3 years ago

1. The factors of a2 - 9 are

Mazyrski [523]

Answer:

Step-by-step explanation:

1. (a+3)(a-3) = a²+3a-3a-9 = a²-9

2. a linear equation consists of a polynomial of degree one.

5 0

3 years ago

A theater has 358 seats on the main level and 122 seats in the balcony.There are 6 shows each day.What is the greatest number of

Alika [10]

The answer is 2,880

First you would Add 358 and 122.

358+122= 480 (This is the total of seats in the theater)

Then multiply 480 by 6 (The days the show is playing)

480*6= 2,880

8 0

3 years ago

Read 2 more answers

Which equation is equivalent to 4s=t+2

Paraphin [41]

Answer:If we're solving for t my work is below:

t = 4 s - 2

If we're solving for s my work is below:

s = t + 2/4

Step-by-step explanation:

7 0

3 years ago