Answer:
Step-by-step explanation:
<em>Note: 3x + 8 is incorrect as leads to negative value for the length. Therefore changed to 3x - 8</em>
<em>------------------------------------------------</em>
- DE is midsegment
- Midsegment = 1/2 Base as per definition, DE = 1/2AC
<u>Substitute values</u>
- 3x - 8 = 1/2(4x + 10)
- 3x - 8 = 2x + 5
- 3x - 2x = 5 + 8
- x = 13
DE = 3*13 - 8 = 31
Answer:
104°
Step-by-step explanation:
The principle to apply here is that angle subtended at the center of a circle is twice the angle at circumference.
Angle subtended at arc = 52°
Angle at the center = 2 x 52° = 104°
Answer:
1) Dilation
2) enlarge or shrink
Step-by-step explanation:
1) The shape stays the same, but the area and size change based upon the scale factor (k)
2) Dilation can shrink or enlarge something based upon a scale factor
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Answer:
13a
Step-by-step explanation:
9a + 3a + a = 13a