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3 years ago

Explain why a number that is divided by a multiple of 3 is also divisible by 3

1 answer:

8 0

It is a reciprocal. Multiplying is the opposite of Dividing, so if I multiply 3 times 4 I get 12. If i divide 12 by 3 I get 4.

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Alex73 [517]

Answer:

Step-by-step explanation:

count on your fingers

6 0

3 years ago

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The range of the data: 7, 10, 30, 16, 8, 5, 3, 18, 35, and 1 tell the answer only

Nikitich [7]

It is 32 because highest number subtracted by lowest

3 0

3 years ago

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What is the area of a triangle with vertices (3,0) (9,0) (7,6)

Nezavi [6.7K]

Answer:

The area of the triangle is of 21 units of area.

Step-by-step explanation:

The area of a triangle with three vertices $(x_1,y_1),(x_2,y_2),(x_3,y_3)$ is given by the determinant of the following matrix:

$A = \pm 0.5 \left|\begin{array}{ccc}x_1&y_1&1\\x_2&y_2&1\\1_3&y_3&1\end{array}\right|$

In this question:

Vertices (3,0) (9,0) (7,6). So

$A = \pm 0.5 \left|\begin{array}{ccc}3&0&1\\9&0&1\\7&7&1\end{array}\right|$

$A = \pm 0.5(3*0*1+0*1*7+1*9*7-0*7*1-0*9*1-3*1*7)$

$A = \pm 0.5*(63-21)$

$A = \pm 0.5*42 = 21$

The area of the triangle is of 21 units of area.

5 0

2 years ago

Please hurry and answer

Katarina [22]

Answer:

Step-by-step explanation:

It’s directly adjacent to the other angle.

4 0

2 years ago

Can you please help me with this

Tatiana [17]

Answer:

Dot plot

Step-by-step explanation:

Each dot on on 0.84 represents each plane. 5 planes had a average cruising speed of 0.84.

4 0

2 years ago