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vfiekz [6]
4 years ago
10

What is 12 = -7f-9 ?

Mathematics
1 answer:
sattari [20]4 years ago
8 0
The answer is -3 because you have to add 9 to both sides, then you have to divide by -7 to both sides to get your answer: f = -3
If you are not sure if the answer is right, then plug the answer in the problem to see your answer is correct or not.
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Ierofanga [76]
We are tasked to solve for the smallest angle using the law of cosines given that the three sides of the triangle are 4,5 and 6.
a=4 , b=5, c=6
Angle 1:
cosA = 5² + 6² - 4² / 2*5*6
A=41.41°

Angle 2:
cos B = 4²+6² -5² /2*4*6
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Angle C:
C = 180° - 41.41° - 55.77°
C = 82.82°

The smallest angle is A which is equal to 41.41°.
4 0
3 years ago
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4 years ago
Which equation represents a circle with the same center as the circle shown but with a radius of 2 units
Leona [35]

Answer:

Option B.

Step-by-step explanation:

Consider the below figure attached with this question.

From the below figure it is clear that the center of the given circle is (4,5).

The standard form of a circle is

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where, (h,k) is center of the circle and r is radius.

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Substitute h=4, k=5 and r=2 in the above equation.

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Therefore, the correct option is B.

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