Carlos has $24, which is 1 1/3 as much money as Luisa has. How much money does Luisa have?
2 answers:
Answer:
Luisa has $18
Step-by-step explanation:
Let us solve the question
∵ Carlos has $24
∵ Carlos has 1 as much money as Luisa has
→ Let Luisa has x dollars
∵ Luisa has x dollars
∴ Carlos money = 1 × x
∴ Carlos money = 1 x
→ Change the mixed number to an improper fraction
∵ 1 =
=
∴ Carlos money = x
→ Substitute the Carlos money by 24
∵ 24 = x
→ Multiply both sides by 3
∵ 24 × 3 = 4x
∴ 72 = 4x
→ Divide both sides by 4
∴ 18 = x
∴ Luisa has $18
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Answer: 49+64i
Step-by-step explanation:
Concept to know:
i=√-1
i²=-1
i³=-i
=1
-------------------------------------
(-5+8i)(3-8i)
=-15+40i+24i-64i²
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=49+64i
Hope this helps!! :)
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