<span>What is the simplified form of the expression 7[63÷(5^2-2^2)-1]?
</span>7[63÷(5^2-2^2)-1]
= 7[63÷(25-4)-1]
= 7[63÷(21)-1]
= 7[3-1]
= 7 (2)
= 14
answer is <span>C. 14
</span><span>Which is a solution of the equation y=4x+3?
answer is
C. (4,19)
</span>y=4x + 3
19 = 4(4) +3
19 = 16 +3
19 = 19
dive the number of miles by the speed
so 450/60 = 7.5 hours
Answer:
10
Step-by-step explanation:
So,
All we have to do is multiply the amount of water Andy carried by the fractional amount he drank.
1/2 * 2/3
This is pretty simple. To halve TWO-thirds, just halve the numerator, since it's such a nice number.
Presto. Half of two is one.
Therefore,
1/2 * 2/3 = 1/3
Andy drank 1/3 gallons of water on his hike. That's 5 1/3 cups of water. I would estimate his hike to be about 3 miles. Easy peasy.
Exponent rule added:
12xx^2 -9x^2
rewrite 9 as 3 x 3, rewrite 12 as 3 x 4
3 * 4xx^2 - 3 * 3x^2 ( * is multiply)
factor common terms:
3x^2(4x-3) - answer.
