Answer:
C
Step-by-step explanation:
Half of b, and then square that is how to complete the square. Therefore, half of b is 3 and square of 3 is 9.
Answer:
7
Step-by-step explanation:
7×3=21 (three times the amount)
21+4= 25 (4 more)
25 is the amount of coins that Samuel has. This means that Elizabeth must have 7 coins. This fits the information given.
Answer:
(a) 94. (b) 85
Step-by-step explanation:
(a). the perimeter = 2l +2w ; l - length and W - width
: . 2l + 2(56) = 300
2l = 300 - 112
l = 188/2 =94m
(b) area = Lxw
8245 = 97w
w = 8245/97
= 85m
Answer:
Step-by-step explanation:
(a + bi)^2 = (a + b)(a − b) + 2abi
= a² + (bi)² + 2 * a * bi
= a² + b²i² + 2abi
= as i² = -1
=<u> a² - b²</u> + 2abi
= (a + b) (a - b) + 2abi