caseychandler030418
01.01.2022 •
Mathematics
Given that log10 3 = x and log10 7 = y, Express log 147 log 63 10 10 in terms of x and y.
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Ответ:
Step-by-step explanation:
Quadrilateral OPQR is inscribed inside a circle as shown in the given diagram. It is a shape bounded by four different sides and four different angles.
In a quadrilateral, the sum of all the angles is equal yo 360 degrees.
This means that
angle O + angle P + angle Q + angle R = 360 degrees.
Also, the opposite angles of the quadrilateral are supplementary. This means that the sum of the opposite angles is 180 degrees. Therefore,
Angle O + angle Q = 180
3y + 8 + y = 180
4y = 180-8 = 172 - - - - - - - -1
Angle R + angle P = 180
2x + 2x + 4 = 180
4x + 4 = 180- - - - - - - -2
From equation 1
y = 172/4 = 43
angle R = 3y + 8
= 3×43 +8 =137 degrees