Answer:
Fifth Score = 87
Sixth Score = 95
Step-by-step explanation:
Given
Required
Set up an equation
Solve for the fifth and sixth score
Average is calculated as thus:
Substitute 85 for Average
Multiply both sides by 6
Solve for 2x
Solve for x
Hence:
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Answer: r = 4
Step-by-step explanation:
To solve the equation 15 r - 6 r = 13, every thing is in order, all we need to do is subtract and then make r subject of the formula
15 r - 6 r = 36
9 r = 36
we then divide both-side of the equation by 9 to make r subject of the formula. Hence;
(On the left hand side of the equation; 9 will cancel out 9 leaving us with r. On the right hand side of the equation 9 will divide 36 which will give us 4)
r = 4
Therefore, the value of r is 4
2.5 is the answer for this
Answer:
4
Step-by-step explanation:
Just plug in y = -6 and solve for x!
4x + y = 10
4x - 6 = 10
4x = 16
x = 4
There are 360° in a circle and this circle is divided into 8 equal parts. 360/8 = 45 which means that each angle is 45°. The central angle subtended by minor arc BC is 2 portions of the circle, or 45 * 2 which is 90°. The answer is B.