13 × [18 ÷ (15-9)] = 13 × [18 ÷ 6] = 13 × 3 = 39
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Answer:
the 4th choice
Step-by-step explanation:
hope this helps
MAy I get braineist pls????????
Answer:
t = 0, t = - 2
Step-by-step explanation:
Given
- t² - 2t = 0 ← factor out t from each term
t(- t - 2) = 0 ← in standard form
Equate each factor to zero and solve for t
t = 0
- t - 2 = 0 ( add 2 to both sides )
- t = 2 ( multiply both sides by - 1 )
t = - 2, thus
solutions are t= 0, t = - 2
5:1 because if you add it doubled that means add 3+2 witch is 5 and just keep the 1 which makes the ratio 5:1