Which equation represents this situation?
ivy bought some paper. she used 12 sheets. she has 11 sheets left.
how many sheets of paper did ivy buy?
a.
□ + 11 = 12
b.
□ – 12 = 11
c.
12 – □ = 11
d.
12 – 11 = □

Sara sells beaded necklaces she makes a profit of 4 dollars pn every neclace she sells which table represents the profit sara makes

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Need showing work for this problem 56.25 ×25.80