Answer:
the cost of the three new CDs is $44.28
Step-by-step explanation:
Here in this question, we are interested in calculating the cost of 3 new CDs cost.
From the question, we already know the cost of one. The cost of three would be 3 multiplied by the cost of one.
The cost of the three excluding the sales tax = $13.79 * 3 = $41.37
The sales tax for the three pieces = 3 * $0.97 = $2.91
The cost of the three CDs including the sales tax = $41.37 + $2.91 = $44.28
Answer:
The numbers are 40 and 22
Step-by-step explanation:
Let x and y be the two numbers; let x be the smaller number
x+y = 62
x = y-18
x+y = 62 becomes:
y-18+y = 62
2y-18=62
2y=80
y=40 (larger number)
x= y-18 = 40-18 = 22
Thus making the answers 40 and 22.
Step-by-step explanation:
the sum of all angles in a triangle is ALWAYS 180°.
and by using the word "congruent" : for angles that only means they are equally large.
we know the third angle.
so,
180 = P + Q + R = 2×P + 28.45
(because P = Q)
2×P = 151.55
P = Q = 151.55 / 2 = 75.775°
Answer:
0.53 mph
Step-by-step explanation:
A cyclist travels 8 miles in 15 minutes.
So the average speed is
=8/15 mph
=0.53 mph
In a rectangular figure, the opposite sides should be equal. If one of the sides measures 8 inches, the side opposite to this should also be 8 inches. We let x be the other dimension. The perimeter (P) is equal to,
P = 2 x 8 + 2x
Substituting the known values,
40 in = 16 + 2x
Solving for x gives an answer of 12 in. Thus, the other dimension is 12 inches.