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
kvv77 [185]
3 years ago
5

These two matrices are unable to be added due to dimensional mismatch? True, false, both, unable to answer with the info given

Mathematics
1 answer:
Hoochie [10]3 years ago
6 0

Answer:

false

Step-by-step explanation:

\left[\begin{array}{c}-4\end{array}\right] +\left[\begin{array}{c}7\end{array}\right] =\left[\begin{array}{c}3\end{array}\right]

Both of the matrices are 1 x 1 ("one by one"), so they can be added to produce a 1 x 1 matrix.

To add (or subtract) two matrices, they must be the same size.

(m x n) + (m x n) = (m x n)

m x n  means a matrix has  m  rows and  n  columns.  Dimensions are always named in that order:  rows, then columns.

You might be interested in
3. What are the intersection points of the line whose equation is y=3x +3 and the
densk [106]

Answer:

Points of intersection of these graphs are (-2, -3) and (0.6, 4.8).

Step-by-step explanation:

Equation of the circle → (x - 2)² + y² = 25 ---------(1)

                                   → (x - 2)² + (y - 0)² = 5²

By comparing this equation with the standard equation of the circle,

(x - a)² + (y - b)²= r²

Here (a, b) is the center and r is the radius of the circle.

Therefore, center of the circle is (2, 0) and radius = 5 units

Second equation is a linear equation → y = 3x + 3 -------(2)

x-intercept of the equation → x = -1

y-intercept of the equation → y = 3

By graphing these equations we can get the point of intersections.

Solving these equations algebraically,

Substitute the value of y from equation (2) in the equation (1),

(x - 2)² + (3x + 3)² = 25

x² - 4x + 4 + 9x² + 18x + 9 = 25

10x² + 14x - 12 = 0

5x² + 7x - 6 = 0

x = \frac{-7\pm \sqrt{7^2-4(5)(-6)}}{2(5)}

x = \frac{-7\pm \sqrt{169}}{10}

x = \frac{-7\pm13}{10}

x = -2, 0.6

From equation (2),

y = -3, 4.8

Therefore, points of intersection of these graphs are (-2, -3) and (0.6, 4.8).

6 0
3 years ago
Candy comes in large bags of 75 candies, a 1 pound bag, and a large bags with multiple fun-size packs. Jenny randomly opened 12
musickatia [10]

Answer:

the mean of the red is 1.75, while the mean of the purple is 2.25

Step-by-step explanation:

LMK if this helps!

hope it does!

6 0
2 years ago
Tessellations
faust18 [17]

9514 1404 393

Answer:

  d. x-axis

Step-by-step explanation:

Consider a point on curve P and its (nearest) image on curve P'. The midpoint between those points is on the line of reflection. That line is the x-axis.

_____

<em>Additional comment</em>

The curve is symmetrical about the y-axis, so each point on P also has an image point that is its reflection across the origin. The reflection of P could be across both the x- and y-axes, or (equivalently) across the origin. We don't know the meaning of "xy-axis", so we suspect that is a red herring. The best choice here is "x-axis."

4 0
2 years ago
Read 2 more answers
What is the value of v? 45(v−7)=2
luda_lava [24]
<span>45(v−7)=2
45v - 315 = 2
45v = 317
v = 317/45
v = 7 2/45 (7 and 2/45)</span>
7 0
3 years ago
Read 2 more answers
Carson bought a coat for 40% off the original price. The store was having an additional sale that offered another 15% off the di
Lisa [10]
Final price is $89.40 with the 40% is $59.60
3 0
3 years ago
Other questions:
  • A school system is reducing the amount of dumpster loads of trash removed each week. In week 5, there were 60 dumpster loads of
    9·1 answer
  • How do I solve inequalities as fractions?
    11·2 answers
  • What's the area of a square picture with 16 inch sides
    6·2 answers
  • Ggfhfsbdhdjhddhdhbdbdgdhbdbdhd
    8·1 answer
  • What is 3 1/10 rounded to the nearest 1/2
    10·1 answer
  • THE PRODUCT OF TWO RATIONAL NUMBERS CAN BE WRITTEN AS
    12·2 answers
  • What is the range of the function y=3 Sqrt x+8
    13·2 answers
  • Solve the system of linear equations below. X + y = 4 2x + 3y = 0 A. X = -6, y = 2 B. X = -1, y = 5 C. X = 11 5 , y = 9 5 D. X =
    9·2 answers
  • 25 Pts + Brainliest for the first correct answer.
    8·1 answer
  • Val is making curtains she has a roll of ice that is 2.5 m long she cuts off a length of lace 0.9 long . How much lace is left o
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!