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2 years ago

Select the correct answer. which is the inverse of this matrix? a. b. c. d. e. the matrix is noninvertible.

Mathematics

1 answer:

Usimov [2.4K]2 years ago

7 0

A. [-19 9 -7

15 -7 6

-2 1 -1 ] is the correct answer.

The question is incomplete but assuming inverse is asked for the matrix

X= [ 1 2 5

3 5 9

1 1 -2]

Step 1: to calculate the determinant, |X|=1

Step 2: to find the adj X= [-19 9 -7

15 -7 6

-2 1 -1]

Step 3: find the inverse, which is given by Adj X/ |X|, hence, the answer A.

learn more about how to find inverse of a matrix here brainly.com/question/12442362

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A florist has 96 white roses, 72 red roses, and 108 pink roses. If all the roses are used, what is the greatest number possible

natali 33 [55]

<h3>The greatest number possible of identical bouquets that can be made is 12</h3>

<em><u>Solution:</u></em>

Given that,

A florist has 96 white roses, 72 red roses, and 108 pink roses

All the roses are used, we have to find the greatest number possible of identical bouquets that can be made

Therefore, we have to find the greatest common factor (GCF) of 96, 72 and 108

<u>GCF of 96, 72 and 108</u>

The factors of 72 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

The factors of 96 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96

The factors of 108 are: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108

Then the greatest common factor is 12

Thus, greatest number possible of identical bouquets that can be made is 12

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4 years ago

Use the quadratic expression 15x2+14x−16 to answer the questions.

marusya05 [52]

Answer:

A: second one or middle choice

B: (5x + 8)(3x - 2)

Step-by-step explanation:

First question (A)

It is a trinomial. You can't use the difference of squares on it. The difference of squares have two terms as an answer.

It is not a perfect square. 15 is not a perfect square and c would have to be positive not minus to even think about using a perfect square.

So the A answer is the second one. You need two different binomials to factor this.

Second Question

You could try all the possible pairings and solve them by brute force.

The are five choices the go with the first one (3x + 4). Eventually you would get the answer, you would have to try 5 + 4 + 3 + 2 + 1 = 15 attempts.

There must be a shorter way.

14 means that the expressions are fairly far apart. This was just luck on my part. There is no logic. 8 and 2 for 16 are fairly far apart.

(5x + 8)(3x - 2)

The middle term is 8*3x - 2*5x = 14x and that looks like the answer.

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3 years ago

home / study / math / algebra / questions and answers / fill in the blank with the appropriate... Question: Fill in the blank wi

Nezavi [6.7K]

What are u asking? your writing too much

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3 years ago

Simplify $\sqrt[3]{\frac{9\sqrt{5}}{2\sqrt{3}}\cdot\frac{5\sqrt{2}}{8\sqrt{2}}}$ and rationalize the denominator. The result can

Alecsey [184]

Answer:

15+6+2=23

Step-by-step explanation:

$\sqrt[3]{\frac{9\sqrt{5}}{2\sqrt{3}}\cdot\frac{5\sqrt{2}}{8\sqrt{2}}}\\=\sqrt[3]{\frac{9\sqrt{5}}{2\sqrt{3}}\cdot\frac{5}{8}}\\=\sqrt[3]{\frac{45\sqrt{5}}{16\sqrt{3}}}\\=\sqrt[3]{\frac{45\sqrt{15}}{16}}\\=\sqrt[3]{\frac{3\cdot\sqrt{15^3}}{16}}\\=\frac{\sqrt[3]{3}\cdot\sqrt{15}}{2\cdot\sqrt[3]{2}}\\=\frac{\sqrt[3]{6}\cdot\sqrt{15}}{2}$

we want it in the form of $\frac{\sqrt{a}\sqrt[3]{b}}{c}$ , so a = 15, b=6, c=2

also this is the minimum possible value, as we cannot simplify it further

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2 years ago

If Johnny has 3 apples, and he eats 2, how many does he have left?

MrRissso [65]

There is 1 apple left

6 0

4 years ago

Read 2 more answers