sairaanwar67
18.10.2019 •
Mathematics
The measure of axb is 196°. what is the measure of zabc, the tangent-
chord angle?
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Ответ:
B
Step-by-step explanation:
The tangent- chord angle is calculated as
∠ABC = 0.5( m arc AXB) = 0.5 × 196° = 98° → B
Ответ:
221/9
Step-by-step explanation:
3+ sqrt( 9x + 4) = 18
Subtract 2 from each side
3-3+ sqrt( 9x + 4) = 18-3
sqrt( 9x + 4) = 15
Square each side
(sqrt(9x+4))^2 = 15^2
9x+4 = 225
Subtract 4 from each side
9x = 225-4
9x = 221
Divide by 9
x = 221/9