reagriffis24
25.06.2019 •
Mathematics
Given the figure above, which of the following formulas is not correct? a. m∠1 = 1/2 (mrw + msq)b. m∠1 = 1/2 (mpt - mrw)c. m∠2 = 1/2 (msr + mqw)d. m∠2 = 1/2 (mqw - msr)note: the capital letters in the equation, are supposed to have arc symbols.
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Ответ:
Ответ:
Option 1,3 and 4 are correct.
Step-by-step explanation:
Given is a quadratic equation
Marcus used quadratic formula to solve this
The correct use of formula is
for the quadratic equation
Comparing we have a =1, b =-10: c=25
The student should have substituted -10 for b but he wrong did only 10
II option is wrong since 2 is substituted correctly
III option is right -4ac i.e. the product x 4 must have been subtracted
IV option is right since repeated root is there so only one solution