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katovenus [111]
3 years ago
6

Find the sum or difference.

Mathematics
1 answer:
KIM [24]3 years ago
6 0

Answer:

the sum of the given matrices is

-7 -2

4 -15

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Solve the equation. 8d – 4d – 6d – 8 = 2d
oee [108]
<span>8d – 4d – 6d – 8 = 2d
</span><span>8d – 4d – 6d – 2d = 8
-4d = 8
   d = -2</span>
7 0
4 years ago
Read 2 more answers
Find the coordinates of the intersection of the medians of △ ????BC given ????(2, 4), ????(−4, 0), and ????(3, −1).
Damm [24]

Answer:

The coordinates of the intersection of the medians of △ABC is (1/3, 1).

Step-by-step explanation:

Consider the vertices of △ABC are A(2, 4), B(−4, 0), and C(3, −1).

Intersection of the medians of a triangle is known as centroid.

Formula for centroid of a triangle is

Centroid=(\dfrac{x_1+x_2+x_3}{3},\dfrac{y_1+y_2+y_3}{3})

Using the above formula the centroid of △ABC is

Centroid=(\dfrac{2-4+3}{3},\dfrac{4+0-1}{3})

Centroid=(\dfrac{1}{3},\dfrac{3}{3})

Centroid=(\dfrac{1}{3},1)

Therefore the coordinates of the intersection of the medians of △ABC is (1/3, 1).

4 0
3 years ago
X^3 - 2y^2 - 3x^3 + z^4
Andreyy89

Answer:

-2x³ - 2y² + z⁴

Step-by-step explanation:

Step 1: Write out expression

x³ - 2y² - 3x³ + z⁴

Step 2: Combine like terms (x³)

-2x³ - 2y² + z⁴

8 0
3 years ago
Consider the function f(x) = the quantity x squared minus x minus 12 all over the quantity x plus 3. Describe the graph of this
mamaluj [8]

f(x)=((x-4)(x+3))/(x+3)

simpify

f(x)=x-4

see we eliminated x+3?

That is a hole

find the value of that hole

x+3=0

x=-3

input into simplified function

f(-3)=-3-4

f(-3)=-7

the hole (discontinuity) is at (-3,-7)

f(x)=x-4

where does it cross x axis?

0=x-4

4=x

xint is x=4 or (4,0)

yint is where x=0

f(0)=0-4=-4

yint is (0,-4)


basically

it is a line, f(x)=x-4 with a hole at (-3,7)

with xint at (4,0) and yint at (0,-4)
6 0
3 years ago
A lady came to the market to sell eggs . We first customer bought 1/2 of all her eggs and 1/2 of an egg. Her second customer bou
____ [38]

Answer:

3 eggs

Step-by-step explanation:

Let the total number of eggs that the woman brought to the market be represented by x

A lady came to the market to sell eggs.

The first customer bought 1/2 of all her eggs and 1/2 of an egg.

x - (1/2x + 1/2) = y

= 1/2x - 1/2= y

y = Amount of eggs left after the first customer left

Her second customer bought 1/2 of all the remaining eggs and 1/2 of an egg.

At this point she had sold all her eggs.

Hence:

y - (1/2y + 1/2) = 0

y - 1/2y - 1/2

Solving for y

y - 1/2y = 1/2

1/2y = 1/2

y/2 = 1/2

Cross Multiply

2y = 2

y = 1

Solving for x

(1/2x - 1/2) = y

y = 1

1/2x - 1/2 = 1

1/2x = 1 + 1/2

x/2 = 3/2

Cross Multiply

2x = 2 × 3

2x = 6

x = 6/2

x => 3 eggs

8 0
3 years ago
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