Answer:
Step-by-step explanation:
√a+√b=√(a+b)
squaring
a+b+2√a√b=a+b
or 2√a√b=0
which is possible only if a=0 or b=0
Both a and b can't be zero as a≠b
That's correct.
She will need to travel 244 miles a week for 9 weeks.
Answer:
The cost per pound of bananas is $0.84.
Step-by-step explanation:
The question asks to use the given information to set up a proportion and solve for the missing variable. In this case, we know that the cost of 2 1/4 (or 2.25) bananas is $1.89. Since they are asking for cost per pound, we can set up a ratio (fraction):
Since the cost of bananas is the same regardless of the number of pounds, we can set up a proportion to find the cost for just one (1) pound:
Where 'x' is the cost.
Using cross-multiplication and division we get: 2.25x = 1.89. Next, we use inverse operations to divide both sides by 2.25: 2.25x/2.25 = 1.89/2.25. Solve: x = 0.84 or $0.84 per pound.
Answer:
Washing Machine 1 $480 × .5030 = $241.44
$480 - $241 = $238.56
So Wahsing Machine #1 was $480 and was marked down by .5030% which takes off $241.44 which brings us to the total to $238.56
Washington Machine #2
$480 × .30% = $144 × .20% = $28.80
So Washing Machine 2 was $480 and was marked down by .30% which took off $144 and was marked down by an additional .20% which took off an additional $28.80 which brings the Grand Total of $307.20.
Joanne should buy the first Washing Machine rather than the second Washing Machine because the first Washing Machine is $68.64 cheaper than the second Washing Machine.
