Answer:rational
Step-by-step explanation:
Pemdas
parenthasees
exponenes (includes square root)
mult or division from left to right
add or subtract from left to right
so parenthasees are good
multiply first and vidied(-6 times 4)+(-7 times 3)=-24-21
then add or subtract
-24-21=-45
Rounding to the nearest hundredth would equal a more accurate and precise answer since more decimals are present. Your answer would be even more accurate if you rounded to the nearest thousandth.
The interior angles of a triangle add up to 180 degrees
a = 1st angle, b = 2nd angle, c = 3rd angle
c = 6a
b = a + 60
a + b + c = 180
a + (a + 60) + (6a) = 180
8a + 60 = 180
8a = 180 - 60
8a = 120
a = 120/8
a = 15 <=== here is one angle
b = a + 60
b = 15 + 60
b = 75 <=== and another one
c = 6a
c = 6(15)
c = 90 <=== and the last angle
Answer:
1. a) B = 3.14 × 4² = 50.24 cm²
b) 16 cm
c) V = B.h = 50.24 × 16 = 803.84cm³
2. a) B = 3.14 × 8² = 200.96 cm²
b) 6 cm
c) V = B.h = 200.96 × 6 = 1205.76 cm³