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3 years ago

Are the following 2x2 matrices inverses or not? 1 ㅔ 1 2 & 0 1 30 2 -1

1 answer:

5 0

Answer: A . Not all 2 × 2 matrices have an inverse matrix. If the determinant of the matrix is zero, then it will not have an inverse; the matrix is then said to be singular. Only non-singular matrices have inverses.

Step-by-step explanation:

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Rebeca spent $32.55 for a photo album and three identical candles. The photo album cost $17.50 and the sales tax was $1.55. How

Marina86 [1]

Answer: $4.50 per candle

Step-by-step explanation:

$32.55 - $17.50 - $1.55 = $13.50 for all the candles

To find the price of a single candle we divide our answer by 3

13.50/3 = $4.50

3 0

3 years ago

Determine the distance between (-5,2) and (-2,5). show your work. round to the nearest tenth if necessary.

statuscvo [17]

Answer

-2

Step-by-step explanation:

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4 0

3 years ago

SIMPLIFY: 9 + 5u + 6u - 7 - 8u + 4

zheka24 [161]

I would say the answer would be
6+3u

8 0

3 years ago

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19 out of 34 what is the percenatge in 1 decimal place

solong [7]

Type 19/34*100 into your calculator, and out comes the answer.

3 0

3 years ago

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Please help!!! Ella and Margaret were at a carnival. They each got a ticket for the Ferris wheel. Ella got a snow cone, and Marg

seraphim [82]

Answer:

(B) $5.25

Step-by-step explanation:

We can create an equation to represent this problem.

Let's assume $f$ is the cost of a ferris wheel ticket, $s$ is the cost of a snow cone, and $c$ is the cost of a cotton candy.

We bought two ferris wheel tickets, one snow cone, and one cotton candy. After a discount of 6 dollars, the price was 12.75.

This makes the equation $2f + s + c - 6 = 12.75$

Since we know the value of each ferris wheel ticket and the snow cone, we can simplify our equation by substituting in these values.

$2(5) + 3.50 + c - 6 = 12.75\\\\10 + 3.50 + c - 6 = 12.75\\\\7.5 + c = 12.75$

We can now subtract 7.5 from both sides to get the value of $c$ , the cotton candy price.

$7.5 + c - 7.5 = 12.75 - 7.5\\\\c = 5.25$

So the cotton candy cost $5.25.

Hope this helped!

3 0

3 years ago

Read 2 more answers