Question

complete these sums with steps
23. Add: 5xy + 15yz + 3xz, 7xy + 3yz + 4xz.
Subtract: -5x2 from 6x2 24.
Evaluate the following expressions when x = 2 and y = 3
(a) x2+ y2
(b) xy + 2x =
Calculate the answers and express in standard form.
a) 0.007 x 0.011
b) 3.9 x 103 ÷ 1.3 x 107
c) 5.3 x 107+ 1.1 x 102

Answer 1

Answer:

options a

Step-by-step explanation:

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