do as directed
1)solve ( A - 2B)( 3A + 2B )
2) two complementary angles differ by 26 degree find the largest angle .
3) find 25% of rupees 376
4) if CP = to rupees 2200 and SP =
rupees 2000 find the loss percent
5) find the ratio of 3 months and 45 days( 1 months is equal to 30 days).
6) if principal is rupees 12000 and and time is 2 years and rate of intrest is 9% find simple interest.
7) find the height of parallelogram if area is 54 CM square and base is 15 CM
8)find the circumference of a circle whose diameter is 14 centimetre
9)find the rate of interest when principal is rupees 3500 simple interest is rupees 3050 and time is 5 years
10)if 9% of P is 180 .find p
11) solve the equation 3(5 + X) - 5 = to 0
Answers
Answer:
Step-by-step explanation:
( A - 2B)( 3A + 2B )
= 3A² + 2AB - 6AB - 4B²
= 3A² - 4B² - 4AB
two complementary angles differ by 26 degree find the largest angle
Let sat Larger Angle = L
Then Smaller angle = L - 26
L + L - 26 = 90
=> 2L = 116
=> L = 58°
25% of rupees 376 = (25/100) 376 = 94 Rs
CP = 2200
SP = 2000
Loss = 200
Loss % = (200/2200) * 100 = 100/11 = 9.09 %
the ratio of 3 months and 45 days
3 Months = 3 * 30 = 90 Days
90/45 = 2 : 1
SI = P * R * T /100 = 12000 * 9 * 2 /100 = Rs 2160
height of parallelogram if area is 54 CM square and base is 15 CM
Area of Parallelop gram = Base * Height
=> Height = 54/15 = 18/5 = 3.6 cm
Circumference of circle = π * Diamater = (22/7) * 14 = 44 cm
3050 = 3500 * R * 5 /100
=> R = 3050 / 175
=> R = 17.43 %
(9/100) P = 180
=> P = 2000
3(5 + X) - 5 = 0
=> 3(5 + X) = 5
=> 5 + X = 5/3
=> X = 5/3 - 5
=> X = -10/3