Aiko is finding the sum (4+5i)+(-3+7i). she rewrites the sum as (-3+7)i + (4+5)i. which statement explains the property of addition that she made an error doing?
a. commutative b. associative c. identity d. distributive

For this case, Aiko erroneously used the distributive property of the addition.

The correct way to use the distributive property for this case is given by:

From here, rewriting we have:

Simplifying we have:

the property of addition that she made an error doing is:

D.Distributive

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x