Answer:
Number of cheaper dresses sold is 35
Number of expensive dresses sold is 15
Step-by-step explanation:
Given:
Cost of cheaper dresses = $90
Cost of expensive dresses = $140
Total cost of the dresses = $5250
To Find:
Number of cheaper dress = ?
Number of expensive dress = ?
Solution:
Let
The number of cheaper dresses be x
The number of expensive dresses be y
(Number of cheaper dresses X cost of cheap dress) + (Number of Expensive dresses X cost of expensive dress) = $5250
= $5250
It is given that the 20 more of the cheaper dresses than the expensive dresses is sold
So,
number of cheaper dress = 20 + number of expensive dress
x = 20 + y---------------------------------------(1)
y = 15
Substituting y in (1)
x = 20 +15
x= 35
Answer:
1.00 and 1.73
Step-by-step explanation:
1) Calculating the 1st and the 2nd leg using trigonometric function sine:
Once one leg is found there is another way to find the other leg, using Pythagorean Theorem too.
Sides
a hypotenuse: 2.00
-------------------------------
b leg: 1.73
--------------------------------
c leg: 1.00
--------------------------------
<h3>
Answer: C) perpendicular</h3>
Explanation:
Each equation given to you is in y = mx+b form (aka slope intercept form).
The slope m is what we'll focus on.
The first equation has slope of 1, while the second equation has slope -1.
The two slopes multiply to -1. This is a property of any pair of perpendicular lines, as long as neither line is vertical nor horizontal.
Or you could note that -1 is the negative reciprocal of 1, or vice versa.
So there are a few options to see why the lines are perpendicular.
Answer:
140
Step-by-step explanation:
280/2 = 140 apples
Answer:
a = 8.2 cm, b = 37.5 cm
Step-by-step explanation:
80/500 = (a/20.5)²
a²/420.25 = 80/500
a² = (80 * 420.25)/500 = 67.24
a = 8.2 cm
80/500 = (15/b)²
225/b²=80/500
b² = (225 * 500)/80 = 1406.25
b = 37.5 cm
