Answer:
x + y = 9
5x + 2y = 30
Step-by-step explanation:
We're trying to find the number of sandwiches and bottles of water he buys and we know he bought 9 in total. This can be represented by x + y = 9 (since x represents the sandwiches and y represents the water). Knowing this, we know that sandwiches (x) cost 5 dollars and water (y) costs 2 dollars. We know he spent a total of 30 dollars. The second equation can therefore be represented by 5x + 2y = 30.
Answer:
-150, 55, -78
Step-by-step explanation:
44>a-64
108>a
Answer: $100 off
Step-by-step explanation:
380 • 0.25 = 95
Which is 5 less than 100 so $100 is a better coupon
Answer:
96 cm squared
Step-by-step explanation:
A rhombus has 4 edges of equal length. If it has perimeter of 40cm, then each length would be
40cm
4 = 10cm
Divide the rhombus into 4 right-angle triangle by cutting along the 2 diagonals.
Each right-angle triangle will have a hypotenuse of 10cm and one other edge with length
12cm
2 = 6cm
Use Pythagoras Theorem to find the length of the remaining edge.
√(10cm) squared − (6cm) squared = 8cm
Now find the area of the triangle.
1
2 × 6cm ×8cm =24cm squared
Since the original rhombus was made up of four such triangles, the area of the rhombus would be
24cm squared × 4 = 96cm squared
Answer:
The answer is A.
Step-by-step explanation:
took the test im positive