Answer:
Step-by-step explanation:
<em>Look at the picture.</em>
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We have:
Therefore
<em>divide both sides by 2</em>
Answer:
Its an equation, not an inequality
Answer:
3,040$
Step-by-step explanation:
20k*.1=2,000
8k*.13=1,040
2,000+1,040=3,040
I am so sorry if I'm wrong.
Answer:
a² + b² = 68
a3 + b3 = 520
Step-by-step explanation:
Given :
a + b = 10 (1)
ab = 16 (2)
A. Find a² + b²
(a + b)² = a² + 2ab + b² (3)
Substitutite the values of (1) and (2) into (3)
(10)² = a² + 2(16) + b²
100 = a² + 32 + b²
Subtract 32 from both sides
100 - 32 = a² + b²
a² + b² = 68
B. a^3 + b^3
(a + b)^3 = a^3 + b^3 + 3ab(a + b)
(10)^3 = a^3 + b^3 + 3*16(10)
1000 = a^3 + b^3 + 480
a^3 + b^3 = 1000 - 480
a3 + b3 = 520
Hope this helps!
28 - 13 = 15
15 x 12 = 180 Fifth graders
