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
svp [43]
3 years ago
5

If possible, find (a) A - B, (b) 3A, (c) 3A - 2B, and (d) AB in these two rows. Thanks a lot.

Mathematics
1 answer:
Brums [2.3K]3 years ago
4 0
Wow matrixes gg
a)[ 1   1   4  ]
   [-7  -6  -1 ]
   [ 0   4   0 ]

b)[ 15  12  12  ]
    [-12  -12  0 ]
     [3    6    0 ]

c)[  7  4   12     ]
   [ -18  -16  -2 ]
   [ 1     10    0  ]

d) I forgot how to do d lol so heres all I got.
You might be interested in
Lori was paid a 15 percent commission for the home audio system that she sold. The electronics store had marked up the price of
svlad2 [7]

Answer:

$63.36

Step-by-step explanation:

The home audio system costs $264 wholesale.

The system's price had been increased by 60 percent at the electronics retailer.

Consequently, the increased cost is 60/100x264=$158.40.

The audio system's total cost is now $422.40 (264 + 158.40).

Given that Lori received a commission of = 15% on $422.40, her commission is now (15/100) x 422.40

= $63.36

3 0
2 years ago
Write the equation in slope intercept form of a line that has a slope of 1/2 and passes through the point (-8,-4).
vagabundo [1.1K]
Slope intercept form is y=mx+b
m(slope)=1/2
(x,y)—->(-8,-4) so x=-8 and y=-4 substitute and solve for b
-4=1/2(-8)+b

-4=-4+b
+4=+4
0=b
7 0
3 years ago
Write a polynomial expression, in simplified form, that represents the AREA of the blanket and use the expression to evaluate th
pochemuha

Answer:

Polynomial expression that represents the area of blanket:

A(x)=(6x^2+5x-21)cm^2

If x=2: A(2)=13cm^2  

Step-by-step explanation:

The area of the rectangle can be calculated with the formula:

A=lw

Being l the lenght of the rectangle and w the width of the rectangle.

In this case, the lenght and the width are represented with:

l=(3x+7)cm

w=(2x-3)cm

Substitute them into  A=lw:

 A(x)=(3x+7)(2x-3)

Then:

Use Distributive property (Remember the Product of powers property: b^a*b^c=b^{(a+c)} ):

A(x)=(3x+7)(2x-3)\\A(x)=6x^2-9x+14x-21

Add like terms:

A(x)=(6x^2+5x-21)cm^2 (Simplied form)

Evaluate x=2:

A(2)=(6(2)^2+5(2)-21)cm^2\\A(2)=(6(4)+10-21)cm^2\\A(2)=(24-11)cm^2\\A(2)=13cm^2

6 0
4 years ago
State the domain and range of the following relation.<br> (picture included) <br> please help!
Akimi4 [234]
Domain = what x values are used
Range = what y values are used

so duplicates do not matter, ascending ordering is useful.

Then you can find that answer C correctly lists the right values.
5 0
4 years ago
The integers -5 and 5 are called?
Ierofanga [76]
Additive Inverse. -5 and 5 are opposites.
4 0
3 years ago
Other questions:
  • What is the product of 5/10×10/3
    13·1 answer
  • What is the length of the chord JK ?
    8·1 answer
  • 11x+21 is less than 131. What is x?
    8·2 answers
  • The shirt you want to buy is 15% off from $32.50 How much will your shirt be?
    10·1 answer
  • If miley has 200 pencils and Katie has 300 more pencils then how many more does Katie have then miley
    10·2 answers
  • Help!! 7th grade mathematics
    15·1 answer
  • Item 31 forty students are in the science club. of those, 45% are girls. this percent increases to 56% after new girls join the
    15·1 answer
  • HELP PLS I JUST HAVE 10 MIN ILL PICK BRIALIAST
    15·1 answer
  • Please help gotta pass dis
    12·2 answers
  • Find the slope of the line that passes through the point (4,8) and (3,-3)
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!