The answer is C(20 miles) it goes 10 miles per hours
and it goes for 2 hours
Answer:
0.6
Step-by-step explanation:
Total number of Students are 15
Students scoring above 75% and above are 9
therefore probability of scoring 75% and above are 9/15=0.6
The number of solutions of an algebraic equation equals the value of the exponent with the highest power.
Therefore, the answer is 11.
Answer:she had $63.75 at first.
Step-by-step explanation:
Let x represent the amount of money that she had at first.
kathy spent 3 fifths of her money on a necklace. This means that the amount of money that she spent on the necklace is
3/5 × x = 3x/5
The amount of money remaining would be
x - 3x/5 = 2x/5
She used 2 thirds of the remainder on a bracelet. This means that the amount of money that she spent on the bracelet is 2/3 × 2x/5 = 4x/15
If the bracelet costs $17.00, then
4x/15 = 17
4x = 15 × 17
4x = 255
x = 225/4
x = 63.75
4^1 * 4^2 = 4^(1 + 2) = 4^3 = 64
5^3 * 5^-6 = 5^(3 - 6) = 5^-3 = 1/125
The third one down is rather sneaky. It's also kinda neat.
31 = 32 - 1 = 2^5 - 1
32 * 31
= 32 (2^5 - 1)
= 2^5(2^5 - 1)
= 2^10 - 2^5
= 1024 - 32
= 992
I don't see any math tricks to solve this. Use brute force.
6^5 * 5^-7 = 6^5 / 5^7 = 7776 / 17125 = 0.00953
2. Just pick a couple of questions out of the four above. The last one is a good example for division. The first one would be good for multiplication. I've explained all you need.