Answer:
5 $20 bills and 7 $10 bills
Step-by-step explanation:
You need to have 12 bills, and their values must add up to $170. Start with a guess, and adjust the guess until you find the answer.
The total number of $20 bills and $10 bills must be 10.
I made a table below. I started with a guess and kept adjusting it.
Number of Number of Total
$20 bills $10 bills Value
8 ($160) 4 ($40) $200 Value is too high.
6 ($120) 6 ($60) $180 Value is close
5 ($100) 7 ($70) $70 Correct value
Answer: 5 $20 bills and 7 $10 bills
Answer:
Because the price did not stay the same when they discounted it by 10% percent before.
Step-by-step explanation:
10% percent of 450 is 45 so Subtracting that from 450 would give you,405.
They deducted another 10% percent a week later 10 percent of 405 would be 40.5 so you would subtract that from 405 which would make it 364.5
If you took 20% off originally then 20% of 450 is 90 so subtracting that would make 450 into 360 which is different from 364.5
75 degrees because 42+63=105
180-105=x
Answer:
She used the incorrect area formula.
She converted the mixed number to an improper fraction incorrectly.
She multiplied incorrectly.
Step-by-step explanation:
The area of a parallelogram is
A = bh not A = 1/2 bh
She started with the wrong formula
A = 7 2/5 * 2
Change to an improper fraction
The improper fraction is 37/5 not 35/5
A = 37/5 *2
She multiplied incorrectly
A = 74/5
To evaluate for tan 5x/4 we proceed as follows
5x/4
=5/4*150
=225
which is in quadrant III.
This implies that the value of tan will be positive, hence:
tan 225=tan (270-225)
tan 225=tan 45
using right angle with length of the legs being unit, then
tan 45=1
hence
tan 5x/4=1