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DerKrebs [107]
3 years ago
12

Will mark brain list

Mathematics
1 answer:
RSB [31]3 years ago
4 0

Answer:

36

Step-by-step explanation:

6+6=12 12+12=24 9+6=15 15+24=39

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The shadows of two vertical poles were measured at the same time to be 6m and 15m long. If the first pole is 8cm long, find the
son4ous [18]

Answer:

20 cm

Step-by-step explanation:

Shadow of vertical poles : 6m ; 15m

Length of poles : 8cm ; h

8cm long pole = shadow length, 6m

h cm long pole = shadow length, 15 m

Using cross multiplication :

8cm * 15 m = h cm * 6m

120 = 6h

h = 120 / 6

h = 20 cm

Height of second pole = 20cm

8 0
3 years ago
Check answer please
Cerrena [4.2K]
The fourth or the D) Option is correct.

To find the new induced matrix via a scalar quantified multiplication we have to multiply the scalar quantity with each element surrounded and provided in a composed (In this case) 3×3 or three times three matrix comprising 3 columns and 3 rows for each element which is having a valued numerical in each and every position.

Multiply the scalar quantity with each element with respect to its row and column positioning that is,

Row × Column. So;

(1 × 1) × 7, (2 × 1) × 7, (3 × 1) × 7, (1 × 2) × 7, (2 × 2) × 7, (3 × 2) × 7, (1 × 3) × 7, (2 × 3) × 7 and (3 × 3) × 7. This will provide the final answer, that is, the D) Option.

To interpret and make it more interesting in LaTeX form. Here is the solution with LaTeX induced matrix.

\mathcal{A = \begin{bmatrix}1 & 0 & 3 \\ 2 & -1 & 2 \\ 0 & 2 & 1 \\ \end{bmatrix}}

\mathbf{\therefore \quad 7A = 7 \times \begin{bmatrix}1 & 0 & 3 \\ 2 & - 1 & 2 \\ 0 & 2 & 1 \\ \end{bmatrix}}

\mathbf{\therefore \quad \begin{bmatrix}7 \times 1 & 7 \times 0 & 7 \times 3 \\ 7 \times 2 & 7 \times -1 & 7 \times 2 \\ 7 \times 0 & 7 \times 2 & 7 \times 1 \\ \end{bmatrix}}

\therefore \quad \begin{\bmatrix}7 & 14 & 0 \\ 0 & -7 & 14 \\ 21 & 14 & 7 \end{bmatrix}

Hope it helps.
5 0
3 years ago
3x - 9 = (-18)<br> Please help step by step please
GarryVolchara [31]

Answer: x = -3

Step-by-step explanation:

3x - 9 = -18

1. Add 9 to each side.

3x-9=-18

   +9  +9

3x=-9

2. Divide by 3.

3x/3 = -9/3

You are done.

x = -3

5 0
2 years ago
Write the equation of a line with a slope of 3 and a y-intercept of 1. (2 points)
lozanna [386]
Y = mx + b where m =  slope = 3 and b = y intercept = 1
so equation
y = 3x + 1

answer
<span>y = 3x + 1</span>
6 0
3 years ago
After 3.5 hours, Peyton had traveled 161 miles. If she travels at a constant speed, how far will she have traveled in 4 hours
Flura [38]

Answer:

1.3 more miles i think

Step-by-step e

3.5 hours equal 210 and i divided it by 163 and thats what came up

4 0
3 years ago
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