Write a related subtraction fact for 9 + 3 = 12. Explain how the two facts are related.
1 answer:
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Answer: Option C
Step-by-step explanation:
Given the quadratic equation , substitute
:
In this case, to find the solutions of the given quadratic equation, you must factor out the variable "x". Then:
Therefore, you get that the solutions of this equation are the following:
Then, the answer is:
This matches with the option C.
Answer:
<u><em>Question 10.</em></u>
Length of the side of the square =
By Pythagoras' Theorem,
Hypotenuse = (H > 0)
= 29 m
Ans: 29 m
<u><em>Question 11.</em></u>
By Pythagoras' Theorem,
Length of longer side of 42 km = 42- (L > 0)
= 32.050 km (5 s.f.)
By Pythagoras' Theorem,
Length of the unknown side = (L > 0)
= 35.4 km (3 s.f.)
Ans: 35 km
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