2 years ago

Given matrices A and B shown below, find (3)A+(8)B.

Mathematics

1 answer:

Tasya [4]2 years ago

5 0

Answer:

$\left[\begin{array}{ccc}32&-55\\3&39\end{array}\right]$

Step-by-step explanation:

$\left[\begin{array}{ccc}0&-15\\3&15\end{array}\right] +\left[\begin{array}{ccc}32&-40\\0&24\end{array}\right] =\left[\begin{array}{ccc}0+32&-15+(-40)\\3+0&15+24\end{array}\right] = \left[\begin{array}{ccc}32&-55\\3&39\end{array}\right]$

You might be interested in

Triangle A’ B’ C’ is the image of triangle A B C under a rotation about the origin, (0,0)

S_A_V [24]

Answer:

The triangle A B C will be the image of triangle of A B C in origin (0,0)

8 0

2 years ago

Choose one of the factors of x^3 + 343.

Debora [2.8K]

First, note that $343=7^3.$ Then use the formula for the sum of perfect cubes:

$a^3+b^3=(a+b)(a^2-ab+b^2).$

Therefore,

$x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).$

The quadratic trinomial $x^2-7x+49$ couldn't be factored anymore, so the expression $x^3 + 343$ has two factors $x+7$ and $x^2-7x+49.$

Answer: correct choice is A.

3 0

3 years ago

Allison is evaluating the expression -5-(-2) using integer tiles. She begins with 5 negative tiles as shown. What should Alison

IrinaVladis [17]

Answer:

-3

Step-by-step explanation:

Allison has 5 negative tiles

Next she needs to remove 2 negative tiles

What is left is 3 negative tiles

(-5) -(-2) = (-5+2)=-3

3 0

2 years ago

Read 2 more answers

Which ordered pair represents the translation of R to S?

shtirl [24]

I believe it is -3, 5

8 0

3 years ago

jose is taking care of a neighbor’s cat. The neighbor will be gone for 5 days and left 3 cans of cat food. The cat is supposed t

Nitella [24]

Hey there, Elizabeth76265!

If the owner left only 3 cans of food for 5 days, that means that we have to divide those cans of food so we can just do simple math and divide 3 by 5
$\frac{3}{5}$ and you get 0.6

So the cat must eat 0.6 of each can everyday.

Thank you for using Brainly.
See you soon!

3 0

3 years ago