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o-na [289]
3 years ago
6

What is a scale factor?

Mathematics
1 answer:
jeka943 years ago
6 0
In two similar geometric figures, the ratio of their corresponding sides is called the scale factor<span>. To find the </span>scale factor<span>, locate two corresponding sides, one on each figure. Write the ratio of one length to the other to find the </span>scale factor<span> from one figure to the other. say a triangle had points of A(-1,0),B(0,1),and C(1,0) and the scale factor is two you basically double all the points so the A' is (-2,0), B' is (0,2), and C' is (2,0).</span>
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I need help i dont understand this​
Nata [24]

Answer:

D

Step-by-step explanation:

Given the 2 equations

4x + 8y = 21 → (1)

y = - \frac{1}{2} x + 3 → (2)

Substitute y = - \frac{1}{2} x + 3 into (1)

4x + 8(- \frac{1}{2} x + 3 ) = 21 ← distribute parenthesis on left side

4x - 4x + 24 = 21 ( subtract 24 from both sides )

0 = - 3 ← not possible

This indicates the system has no solutions

5 0
3 years ago
A model is 4.2 feet tall, the plywood used to make the model is 0.6 inch thick. How many sheets of plywood to make the model?
nadya68 [22]
Answer=84 sheets

4.2feet
1 foot=12 inches

4.2*12=<span>50.4inches

50.4/0.6=</span><span>84 sheets</span>
4 0
3 years ago
What is the equivalent factored form of 12x^4-42x^3-90x^2
Tanzania [10]
Factor the following:
12 x^4 - 42 x^3 - 90 x^2

Factor 6 x^2 out of 12 x^4 - 42 x^3 - 90 x^2:
6 x^2 (2 x^2 - 7 x - 15)

Factor the quadratic 2 x^2 - 7 x - 15. The coefficient of x^2 is 2 and the constant term is -15. The product of 2 and -15 is -30. The factors of -30 which sum to -7 are 3 and -10. So 2 x^2 - 7 x - 15 = 2 x^2 - 10 x + 3 x - 15 = x (2 x + 3) - 5 (2 x + 3):
6 x^2 x (2 x + 3) - 5 (2 x + 3)

Factor 2 x + 3 from x (2 x + 3) - 5 (2 x + 3):
Answer:  6 x^2 (2 x + 3) (x - 5)
4 0
3 years ago
Read 2 more answers
What is absolute value
jeka94

Absolute value is the distance between a point and 0. Absolute value is always positive. When you're writing numbers in absolute value, make sure you add:

| |

The absolute value of a negative number is also positive. For example:

| -7 | = 7 ⇒The absolute value of -7 is 7.

3 0
3 years ago
In equilateral triangle RST, R has coordinates (0, 0) and T has coordinates of (2a, 0). Find the coordinates of S in terms of a.
FromTheMoon [43]
The x  coordinate of S will be 1/2 * 2a = a.
and since  the half triangle is 30-60-90 the y coordinate will be sqrt3 a

so S  is (a , sqrt3a)
4 0
3 years ago
Read 2 more answers
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