1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
densk [106]
2 years ago
10

Solve the system of equations below using the inverse of matrix

Mathematics
1 answer:
amid [387]2 years ago
8 0

Answer:

(x, y) = (4,-3)

Step-by-step explanation:

...............

.

.

.

.

You might be interested in
Segments AB, DC and Ec intersect at point C. Angel DCE measures 148. Find the value of x.
Anna71 [15]

The image is attached.

Answer:

x = 16°

Step-by-step explanation:

Segment AB, segment DC and segment EC all intersect at point C.

Here, we are told angle DCE measures 148°.

This is a semi-circle, and the total angle of a semi-circle is 180°.

Which means, x+x+148 = 180

Solving for x, we have:

x+x+148 = 180

2x + 148 = 180

2x = 180 - 148

2x = 32

x = \frac{32}{2}

x = 16°

The value of x is 16°

6 0
3 years ago
Whitch of the following is closest to 8 62 61 65 66
Natasha2012 [34]

Answer:

If the question is which is closest to 8, the answer is 61

Step-by-step explanation:

6 0
2 years ago
Of the marbles in a bag 5 are red 4 are yellow and 4 are blue Sandra will randomly choose one marble from the bag fill in the bl
timurjin [86]

Answer:

A. 4/13

B. Likely.

4 0
2 years ago
The heights of men in a certain population follow a normal distribution with mean 69.7 inches and standard deviation 2.8 inches.
Mama L [17]

Answer:

a) P(Y > 76) = 0.0122

b) i) P(both of them will be more than 76 inches tall) = 0.00015

   ii) P(Y > 76) = 0.0007

Step-by-step explanation:

Given - The heights of men in a certain population follow a normal distribution with mean 69.7 inches and standard deviation 2.8 inches.

To find - (a) If a man is chosen at random from the population, find

                    the probability that he will be more than 76 inches tall.

              (b) If two men are chosen at random from the population, find

                    the probability that

                    (i) both of them will be more than 76 inches tall;

                    (ii) their mean height will be more than 76 inches.

Proof -

a)

P(Y > 76) = P(Y - mean > 76 - mean)

                 = P( \frac{( Y- mean)}{S.D}) > \frac{( 76- mean)}{S.D})

                 = P(Z >  \frac{( 76- mean)}{S.D})

                 = P(Z > \frac{76 - 69.7}{2.8})

                 = P(Z > 2.25)

                 = 1 - P(Z  ≤ 2.25)

                 = 0.0122

⇒P(Y > 76) = 0.0122

b)

(i)

P(both of them will be more than 76 inches tall) = (0.0122)²

                                                                           = 0.00015

⇒P(both of them will be more than 76 inches tall) = 0.00015

(ii)

Given that,

Mean = 69.7,

\frac{S.D}{\sqrt{N} } = 1.979899,

Now,

P(Y > 76) = P(Y - mean > 76 - mean)

                 = P( \frac{( Y- mean)}{\frac{S.D}{\sqrt{N} } })) > \frac{( 76- mean)}{\frac{S.D}{\sqrt{N} } })

                 = P(Z > \frac{( 76- mean)}{\frac{S.D}{\sqrt{N} } })

                 = P(Z > \frac{( 76- 69.7)}{1.979899 }))

                 = P(Z > 3.182)

                 = 1 - P(Z ≤ 3.182)

                 = 0.0007

⇒P(Y > 76) = 0.0007

6 0
3 years ago
The volume of this rectangular solid is?
Maru [420]

Well, volume is: length x width x height


so, 5 x 14 x 8= 560 inches

8 0
3 years ago
Other questions:
  • The points where a graph crosses the x- and y-axis are called the _____.
    6·1 answer
  • Q # 15 find the volume of the sphere
    6·2 answers
  • Pls help need asap !!!
    12·1 answer
  • Write each number as a product of primes 1. 120 2. 160
    7·2 answers
  • How to work out volume of prisms and cylinders
    9·1 answer
  • Although television HDTV converters are tested before they are placed in the installer's truck, the installer knows that 20 perc
    9·1 answer
  • Drag each graph to show if the given data has a positive correlation, a negative correlation, or no correlation.
    9·2 answers
  • Will give brainliest answer
    13·1 answer
  • Which scenarios can be represented by a ratio of 4 : 5 ?
    14·2 answers
  • Which linear equation best represents the line of best fit for the scatterplot?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!