Answer:
640 cm²
Step-by-step explanation:
Given 2 similar figures with ratio of sides = a : b, then
ratio of areas = a² : b²
Here the ratio of sides = 5 : 20 = 1 : 4, thus
ratio of areas = 1² : 4² = 1 : 16
The area of ABCD is 16 times the area of EFGH, so
area = 40 × 16 = 640 cm²
<span>(6 + 3i)(6 − 3i) = 45
</span><span>(4 − 5i)(4 + 5i) = 41
</span><span>(−3 + 8i)(−3 − 8i) = 73</span>
Answer:
x=6
Step-by-step explanation:
4x-15=2x-3
+15 +15
4x=2x=12
/2 /2 +12
2x=12
/2 /2
x=6
Answer:
B.
Step-by-step explanation:
The Commutative Property of Addition states that numbers can be switched around. This equation doesn't have a definitive order and the equation allows you to switch around the numbers.
