The little lines crossing the sides of the triangle mean that the 2 sides are identical.
When 2 sides are identical the 2 bottom angles are the same, so 73 and 8y-7 are both 73 degrees. 73 +73 = 146 degrees.
This would mean the third angle ( 6x+4) needs to equal 180 - 146 = 34 degrees.
Now we can find X:
6x+4 = 34
Subtract 4 from each side:
6x = 30
Divide each side by 6:
x = 30/6
X = 5
Answer:
Step-by-step explanation:
Let chocolate bar cost be c and blow pop cost be b
<u>Then we have equations:</u>
- 5c + 8b = 23.25
- 2c + 13b = 21.55
<u>Multiply the first equation by 13 and the second one by 8 and subtract:</u>
- 13(5c + 8b) - 8(2c + 13b) = 13(23.25) - 8(21.55)
- 65c - 16c = 129.85
- 49c = 129.85
- c = 129.85/49
- c = 2.65
Chocolate bar costs $2.65
Answer:
1. subtraction 2. division 3. division 4. multiplication
Step-by-step explanation:
Answer:
x = 1, y = -4
Step-by-step explanation:
set each equation equal:
-7x + 3 = -x - 3
-6x + 3 = -3
-6x = -6
x = 1
y = -7 + 3
y = -4