3/8+1/8=4/8=1/2 simplified
4/5+3/4= common denominator of 20
new fraction: 16/20+15/20
31/20=1 11/20 simplified
6/7+2/5 common denominator of 35
new fraction: 30/35+14/35
44/35
1 9/35 simplified
Answer:
24
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- |Absolute Value| - makes any negative number positive
Step-by-step explanation:
<u>Step 1: Define</u>
|10 - 34|
<u>Step 2: Evaluate</u>
- Subtract: |-24|
- |Absolute|: 24
The area of right triangle=1/2*leg1*leg2=20 cm2
Answer: 54
Why? You need to put 3 in for x so you get
2(3)^3
3 to the third power is 3*3*3 which equals 27
2(27)
Now you must do 2 times 27 and you get 54
Hope this helps
Answer:
Number of bulbs which can be lit using 1 kg of coal = 9
Step-by-step explanation:
Energy yielded by burning 1 kg of coal = 30 × 106 joules
= 3180 joules
Amount of energy that can be used for electricity = 30 % of 3180 joules
= 0.30 × 3180
= 954 joules
Energy needed for lighting one bulb = Wattage of bulb × No. of hours of lighting
⇒ Energy needed for lighting one bulb = 100 × 1
= 100 joules
Hence, Number of bulbs which can be lit using 1 kg of coal = 9
