3 years ago

What scale factor was applied to the first rectangle to get the resulting image?

Mathematics

1 answer:

igomit [66]3 years ago

5 0

Answer:

2.5

Step-by-step explanation:

7.5/2=2.5

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* What is the circumference? 16 in

BlackZzzverrR [31]

Answer:50.27

Step-by-step explanation:

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3 years ago

Janet and Marjorie want to buy rolls of material to line rectangular drapes for their rooms. The rectangular piece of material o

Nuetrik [128]

Answer:

They need 2 and 1/2 rolls.

Step-by-step explanation:

Area = length x width

A = l x w

A = 20 x 3

A = 60 ft²

If 60 ft² = 1 roll

What about 150 ft² = ?

= (150 x 1) ÷ 60

= 150 ÷ 60

= 2.5

= 2 and 1/2 rolls

4 0

3 years ago

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

3 years ago

Marie has 50 pages in her notebook. She made a graph of the kinds of writing on all of the pages she has

MissTica

Answer:

Step-by-step explanation:

50 - 2-3-6-3-5 = 31

4 0

3 years ago

The Math Counts Club had a party at their school. There were 20 cookies and 40 slices of pizza to be shared equally. Each studen

pychu [463]

Answer:

2, 4, 10 or 20 students

Step-by-step explanation:

Prime factors:

20 = 2*2*5
40 = 2*2*2*5

Common factors of the two numbers:

2, 4, 10, 20

Possible number of students as above

4 0

3 years ago