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4 years ago

SUPER EASY

Mathematics

2 answers:

nirvana33 [79]4 years ago

7 0

The answer is the third one and which is letter C and it’s 3(x + 5) = 3 • x + 3 • 5

goblinko [34]4 years ago

6 0

3(x + 5) = 3 · x + 3 · 5

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Point A has coordinates (6,4) and point B has coordinates (2,7) write AB as column vector. Plz plz plz

Olenka [21]

Answer:

$\overrightarrow{AB }=\begin{bmatrix}-4\\3 \end{bmatrix}$

Step-by-step explanation:

Column Vector

Vectors are matrices having only one column or one row. A vector having only one column is called a column vector, and a vector having only one row is called a row vector.

It's required to find the vector AB as a column vector, and we are given the coordinates of A=(6,4) and B=(2,7).

The vector directed from A to B is found by subtracting its corresponding coordinates:

$\overrightarrow{AB }=$

Now we express the vector as a one-column matrix as follows:

$\overrightarrow{AB }=\begin{bmatrix}-4\\3 \end{bmatrix}$

7 0

3 years ago

How many cubes with a side length of 3 cm can be placed inside a box with length of 18 cm, width of 6 cm and height of 9 cm?

vodka [1.7K]

Answer:

36 cubes.

Step-by-step explanation:

to find the number of cubes:

first, identify the volume of the box using the formula: LxWxH

18cm x 6cm x 9cm = 972 cm³

next, identify the volume of the cube to be placed:

given: cube with a side length of 3 cm

Thus, volume of the cube is 3³=27cm³

To identify the number of cubes, divide the volume of the box to the volume of the cubes. 972/27 = 36. Thus we need 36 cubes.

7 0

4 years ago

Read 2 more answers

A rectangle is 6yards longer than it is wide. Find the dimensions of the rectangle if it’s area is 187 square yards

emmasim [6.3K]

Answer:

Width = 11 yards

Length = 17 yards

Step-by-step explanation:

First of all, the length of the rectangle is 6 yards longer than the width, this means, length = width + 6 yards. This dimensions can be represented on figure 1, where w is width, and l, for length.

We know the area of a rectangle is A = width x length

For our case 187 = w . (w + 6)

Using the Distributive Property for the multiplication we obtain

$187 = w^{2} +6w$

$w^{2} +6w-187 =0,$

Using the quadratic formula $w=\frac{-b\±\sqrt{b^{2}-4ac } }{2a}$ where a = 1, b = 6, c = - 187 and replacing into the formula, we will have:

$w=\frac{-6\±\sqrt{6^2-4(1)(-187)} }{2(1)}$

$w=\frac{-6\±\sqrt{36+748} }{2}=\frac{-6\±\sqrt{784} }{2}=\frac{-6\±28}{2}$

We have two options: $w=\frac{-6+28}{2}=\frac{22}{2}=11 yards$

$w=\frac{-6-28}{2}=\frac{-34}{2}=-17 yards$ But a distance (width) can not be negative so, this answer for w must be discarded.

The answer must be width = 11 yards.

To find the length $l =\frac{187}{11}=17 yards$

6 0

3 years ago

Dave's favorite baseball team has won 10 fewer games than Kimiko's favorite baseball team. Write an algebraic expression for the

DIA [1.3K]

Answer:

D = K-10

Step-by-step explanation:

Let the number of games won by Dave's favourite basketball team be D and Kimiko's be K.

D + 10 = K

therefore,

D = K-10

Topic: Algebraic equations

If you would like to venture further into mathematics, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

7 0

3 years ago

#1 Factors Which of these numbers is a factor of 49? a. 9 b. 7 C. 6 d. 5

Vesna [10]

Answer = b. 7

THANK YOU FOR LISTENING TO MY TED TALK

8 0

3 years ago