Answer:
B: a = 1, b= 7, c = -2
Explanation:
Knowing This:
<u>solve for b</u>
- -b = -7
- b = 7
<u>solve for a</u>:
- 2a = 2
- a = 1
<u>solve c</u>:
- b² - 4ac = 57
- 7² - 4(1)(c) = 57
- -4c = 57 - 49
- -4c = 8
- c = 8/-4 = -2
A sweater was 48$ but its now 2/3 of it original price and you have a 5$ coupon
1 answer:
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Answer:
Consistent and dependent
Step-by-step explanation:
Given
Required
The words that describe the equations
Make y the subject in (2)
Collect like terms
Divide through by 2
Substitute: in (1)
Collect like terms
Solve for x
Simplify
Substitute in
So, we have:
and
<em>The system is consistent because it has at least 1 solution</em>
<em>The system is dependent because it has more than 1 solution</em>