rosezgomez97
02.07.2019 •
Mathematics
If ∠a and ∠b are supplementary angles and m∠a = 3m∠b, find m∠a and m∠b.
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Ответ:
m ∠A=3(m ∠B) and m ∠B=?
m ∠A + m ∠B=180°
3 (m ∠B) + m ∠B=180°
4 m ∠B=180°
4/4 m ∠B=180°/4
m ∠B=45° and m ∠A=3(m ∠B)=3 (45)=135°
Ответ:
25% of the 40 students is 10 students.
first you have to turn 25% into a decimal with is .25. now you have to multiply the number of student with the decimal. 40 x .25 = 10.00 (10 students)
so every 25% is to 10 students.
2o students in percentage is equal to 50% with is 1/2 factional part of the grup.