Answer:
1. x² + 3x - 5 = 0
2. x² - x = 3 x + 7
4. 7x² + 14x = 0
Step-by-step explanation:
A Quadratic equation takes the form;
ax² + bx + c = 0
a, b, c are constants and a cannot be 0.
Options 1 fits this;
x² + 3x - 5 = 0
Option 2 fits this as well;
x² - x = 3 x + 7
x² -x - 3x - 7 = 0
x² - 4x - 7 = 0
Option 4 fits this as well if c = 0.
7x² + 14x + 0 = 0
Answer:
9
Step-by-step explanation:
Answer:
80 m/s
Step-by-step explanation:
Answer:
¾
Step-by-step explanation:
More than 3: 9
P(more than 3) = 9/12 = ¾
Answer:
1. k≤ 26.11 hours
2. 5 ≤ x ≤ 6
Step-by-step explanation:
1.
38.76 + 2.69k ≤ 109
2.69k ≤ 70.24
k ≤ 26.11 hours
2.
19 ≤ 4 + 3x ≤ 22
15 ≤ 3x ≤ 18
5 ≤ x ≤ 6
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-Chetan K
