Answer:
6a + 15
Step-by-step explanation:
Answer:
40 square units
Step-by-step explanation:
First of all, lets say that square has side , so, the area unit is
the diagonal's square is
CALCULATION OF TRIANGLES'S AREA (there are 4 triangles)
CALCULATION OF MAIN SQUARE AREA
TOTAL AREA
Answer:
0.43
Step-by-step explanation:
Answer:
86 milkshakes and 63 ice cream were sold
Step-by-step explanation:
Let the amount of milkshake sold be x
Let the amount of ice cream sold be y
If she sold 149 milkshakes and ice cream cones then;
x+y = 149 ... 1
If the milkshakes sold for $4 and the ice cream cones for $3, with total amount #533 collected then;
4x + 3y = 533 ....2
Solve both equations simultaneously
x+y = 149 ... 1 * 4
4x + 3y = 533 ....2 * 1
________________________
4x+4y = 596
4x+3y = 533
Subtract
4y-3y = 596-533
y = 63
since x +y = 149
x+63 = 149
x = 149 - 63
x = 86
Hence 86 milkshakes and 63 ice cream were sold