Answer:
21
Here’s legitimate proof that 9+10=21
(9 + 10) (base x) = 21 (base y)
9(1) + [1(x) + 0(1)] = 2(y) + 1
Simplify and solve for y:
2y = 8 + x
y = 4 + x/2
Since we have number bases, we want x and y to be positive integers. The term x/2 requires that x be a positive even number.
Also since 9 is in base x, we have x ≥ 10, as the digit 9 would not be used for a base 9 or smaller.
Thus we have the pairs of solutions:
x = 10, so y = 9
x = 12, so y = 10
x = 14, so y = 12
…
x, y = 4 + x/2 … Therefore 9+10=21!
it to calculate the cost of $100 for every 50lbs, you would use 100x
then you need to add that to the 1200
so the equation would be y = 1200+100x
B is the correct answer
Answer:
2635.875pounds
Step-by-step explanation:
Converting all the units to pounds for unit consistency. Let's convert
1 1/4tons horse weight and 15ounce water bottle to pounds.
According to the conversion;
1 ton = 2000pounds
1 1/4 tons = (2000×5/4)pounds = 2500pounds
Similarly for the conversion of ounce to pounds;
1 ounce = 0.625pound
15 ounces of water bottle = (0.625×15)pounds
= 9.375pounds
The total weight of the horse, rider, and items in total will give;
2500pounds horse + 110pounds person + 9.375pounds water bottle + 16.5pounds basket
= 2635.875pounds
The constant would be one, because each minute the car travels one mile!
