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y = 2x + 5 y = 4, therefore 2x + 5 = 4 2x = 1 x = 1/2

a² + b² = c²

a : 9       b : unknown      c: 15

b² =c² - a²

so b² = 225 - 81

=144 so b=12

Material is deposited by constructive waves when waves no longer have enough energy to transport the material or there is an increase in the amount of eroded material being carried leading to the formatio...

42 x 5 = 210.

45+29+63+42 = 179.

210 - 179 = 31

X = 31

There are two simple past tenses in Spanish: the imperfect and the preterite tenses.

The imperfect tense is used to describe continuous past actions, something which used to happen or to describe w...