Answer:
-4+10 AND 8-2
Step-by-step explanation:
Answer:
11
Step-by-step explanation:
x + 2y = 24.....x = 24 - 2y
now sub 24 - 2y in for x, back into the other equation
2x + y = 9
2(24 -2y) + y = 9
48 - 4y + y = 9
-4y + y = 9 - 48
-3y = - 39
y = -39/-3
y = 13
x + 2y = 24
x + 2(13) = 24
x + 26 = 24
x = 24 - 26
x = -2
so the value of x + y = -2 + 13 = 11 <===
Answer:
Carla's suitcase was a better purchase.
Step-by-step explanation:
The complete question is:
Carla and Daniel bought identical suitcases at different stores. Carla's suitcase originally cost $75 and was discounted 19% Daniel's suitcase original cost $85 and was on sale for 20% off the original price. Which suitcase was the cheaper?
Solution:
- Cost Price of Carla's suitcase = $75
Discount% for Carla = 19%
The amount paid by Carla is,
So, the amount paid by Carla was, $60.75.
- Cost Price of Jeana's suitcase = $85
Discount% for Jeana = 20%
The amount paid by Jeana is,
So, the amount paid by Jeana was, $68.
Carla's suitcase was a better purchase.
<h3>
Answer: A) 57</h3>
==============================================================
Explanation:
For any convex polygon, the sum of the exterior angles is always 360 degrees.
The exterior angles (5x+12), (10x-37) and (9x+1) add to 360. Use this to solve for x.
(5x+12)+(10x-37)+(9x+1) = 360
(5x+10x+9x) + (12-37+1) = 360
24x-24 = 360
24x = 360+24
24x = 384
x = 384/24
x = 16
The expression 10x-37 is then
10x-37 = 10*16-37 = 160-37 = 123
which is the measure of the exterior angle adjacent to angle BCA
The last step is to subtract this from 180 to get angle BCA itself
angle BCA = 180 - 123 = 57
Answer:
answer should be 77.5 (a)