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forsale [732]
1 year ago
15

Is the value of the variables used in this metric system?

Mathematics
1 answer:
Marat540 [252]1 year ago
6 0

Solution:

a=-2 b=1 c=4 d=0

Analysis:

When we multiply a matrix by a constant, we multiply each term of the matrix by the constant.

In this case, as we need to find the value of the initial matrix, we can divide each term of the matrix by the constant. In this case, let´s divide by -5

So, it would be:

a=10/-5 a=-2

b=-5/-5 b=1

c=-20/-5 c=4

d=0/-5 d=0

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Nimfa-mama [501]

2 is your prime factor

6 0
3 years ago
What is the value of c
Oksana_A [137]

Answer:

c=28

Step-by-step explanation:

In a convex polygon, all the exterior angles are congruent to each other.

I'll be choosing the two angle degrees of 4c-28 and 3c and set them equal to each other.

4c-28=3c

Therefore, c=28

4 0
3 years ago
What do I do? what's Ax??
Liono4ka [1.6K]

A=\left[\begin{array}{ccc}5&-4\\3&6\end{array}\right] \\\\A_x=\left[\begin{array}{ccc}12&-4\\66&6\end{array}\right]

|A_x|=\left|\begin{array}{ccc}12&-4\\66&6\end{array}\right|=(12)(6)-(66)(-4)=72+264=336

5 0
3 years ago
The scale factor of the dimensions of two similar wood floors is 5 ​: 3. It costs ​$144 to refinish the smaller wood floor. At t
Eva8 [605]

Answer: 240

Step-by-step explanation:

144/3 = 48

5x48= 240

6 0
3 years ago
For a group of 100 people, compute(a) the expected number of days of the year that are birthdays of exactly 3 people.(b) the exp
Scilla [17]

Answer:

Step-by-step explanation:

Leaving leap years, a year contains 365 days.

For a group of 100 people, each person is independent of the other and probability of any day being his birthday has a chance of

\frac{1}{365}

a) Probability that  exactly 3 people have same birthday = \frac{1}{365^3}

Each day is independent of the other

And hence no of days having exactly 3 persons birthday out of 100 persons is binomial with n = 365 and p = \frac{1}{365^3}

Expected value of days = np = \frac{1}{365^2}

b) Distinct birthdays is binomail with p =1/365 and n = 365

Hence

expected value = np =1

4 0
3 years ago
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