First write the question:
3a^2 + 4b^2
Substitute:
3 x (2^2) + 4 x (3^2)
Simplify:
(3 x 4) + (4 x 9)
Simplify again:
12 + 36
Answer:
48
Hope it helped :)
B
dividing with the same numbers and different exponents is like subtracting the exponents
16-8 = 8
Answer:
4.7 to nearest tenth.
Step-by-step explanation:
By Pythagoras:
8^2 = x^2 + 6.5^2
x^2 = 8^2 - 6.5^2
x^2 = 64 - 42.25 = 21.75
x = √21.75
= 4.6637
Answer: John's share of the money is $18.75
Step-by-step explanation:
The total amount of money that was paid to John and Monica for their work is $41.25.
John worked 2.5 hours, and Monica worked 3 hours. This means that the ratio of the amount of time that each of them worked is
2.5 : 3
Total ratio is 2.5 + 3 = 5.5
If they split the money according to the amount of time each of them worked, then John's share of the money would be
2.5 / 5.5 × 41.25 = 103.125/5.5
= $18.75
Seven, because 6.7 rounded to the nearest whole number is 7.
