Answer:
<em>The measure of the angle ∠ABC is 108°</em>
Step-by-step explanation:
<em>An isosceles triangle has two equal sides and two equal angles</em>
<em>In this problem</em>
<em>∠BDA=∠BAD= 66° ----> the angles of the base are equals</em>
<em>Find the measure of the vertex angle</em>
<em>∠ABD = 180° - 2×66° = 48° (the sum of the internal angles of a triangle is equal to 180°)</em>
<em>then. Find the measure of the angle ∠CBD in the equilateral triangle we know that</em>
<em>The measure of the internal angle in a equilateral triangle is 60° so</em>
<em>∠CBD= 60°</em>
<em>Then find the measure of the angle ∠ABC</em>
<em>∠ABC=∠ABD+∠DBC</em>
<em>substitute the values</em>
<em>∠ABC= 48°+60° = 108°</em>
<em>The answer is 108°</em>
<em>The measure of the angle ∠ABC is 108°</em>
Answer:
STEP BY STEP EXPLANATION
To make a perfect square we should add
Answer:
15
Step-by-step explanation:
Answer:
1000
Step-by-step explanation:
For rounding questions, you want to look at the place value to the right of the digit it wants you to round to. If that place value to the right of the digit you need to round is less than 5, you round down. If the place value to the right of the digit you need to round is 5 or greater, then you round up. In your situation, the place value you want to round is the hundreds place, so we need to look at the tens value. The tens value is 4, which is less than 5, so we round down. Therefore, the answer would be 1000.
The significant figures are those digits that carry meaning contributing to its precision and includes all digits except: leading and trailing zeros that are placeholders or scales and spurious digits. 546.000 has 3 significant figures.