คณิตศาสตร์ มัธยมต้น มากกว่า 3 ปีที่แล้ว

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1. Determine if each of the following is a linear equation in two variables. (a) 7a - 26 = 0 (b) 4bc + 2 = 0 (c) d = 5e? + 10 (d) 7 + 4f- 9g 1 (e) r+ 3 4 (f) 2p = 4q - 31 = 2y - 1 (g) 3r - 6s - 8 = 0 (h) 3u +1 = 2t - 6 1 = 11พ 2 2 8 (1) 7y - 6) + - 2. Write a linear equation in two variables for each of the following. (a) The difference in age between Dej and his youngest sister is 11 years. (b) The price of a pair of trousers is three times the price of a pair of shorts. (c) The total score of two students in a bowling competition is 781.

ภาษาอังกฤษ มัธยมต้น เกือบ 4 ปีที่แล้ว

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we haven't 2 Complete the sentences with the Present perfect form of these verbs. buy not go het buy not finish not hear write 1 Sorry, I haven't bought a newspaper. I haven t had time! 2 My sister is a journalist. She . a lot of articles. 3/ can't go out tonight. I.. my homework. 4 He... finally ... a new cell phone. 5 They.... to the beach. It's too cold! 1. the final score of the game. Did we win?