Answer:
−
12
a
8
b4+
24
a7
b
2+
6a
4b
2
+
12
a
b
Step-by-step explanation:
Simplify each term
1. FALSE
2. TRUE
3. TRUE
4. FALSE
Arc length = angle (in rad!!) * radius:
45 degree = pi / 4 rad
Arc length = pi/ 4 * 15 = 15/4*pi feet or approx. 11.781 feet
Also in this case only, 45 degrees is 1/8 of the whole circle, so Arc length = 2pir/8 = pi/4*r, but only this case. the first formula always works!
Weight is 1.7 × 10^5 kg
Step-by-step explanation:
- Step 1: Given that the weight of the blue whale = 170 tonnes
- Step 2: Convert the number of tonnes into kg.
⇒ 170 tonnes = 170 × 1000 (1 tonne = 1000 kg)
⇒ 170 tonnes = 17 × 10^4 kg
- Step 3: Convert it into standard format, that is with just one decimal point.
⇒ 17 × 10^4 = 1.7 × 10^5 kg (Dividing and multiplying by 10 on both sides)
Answer: B
Step-by-step explanation:because my teacher said she having trouble
