Answer:
21x-28
Step-by-step explanation:
the distributive property states that a(bx+c) is equal to abx+ac. in this expression, a is 7, b is 3, and c is negative 4. ab is 7*3, which is 21, so abx is 21x. ac is 7*-4, which is -28. combining these two results in 21x-28.
Y = 5x + 3
when x = 4
y = 5(4) + 3 = 23
Answer (4,23)
4,56 км / ч просто разделят ускорението и точката на среща.
19 * 42 + 19 * 58 =
19(42 + 58) =
19 * 100 =
1900
