Determine if the lines are parallel, perpendicular or neither:

1. x + 4 = y and y - x = - 3

Is 4/5 equivalent of 5/10

The price of a gallon of a gallon of unleaded gas was $2.84 yesterday. Today the price fell to 153$. Find the percentage increase round your answer to the nearest tenth of a percent

During the month of June, Ava kept track of the number of days she saw birds in her garden. She saw birds on 18 days of the month. What is the experimental probability that she will see birds in her garden on July 1st?

When multiplying fractions do I multiply straight across or find the common denominator

Avery selects chips from a bag without looking at them. The bag has 5 green chips, 3 red chips, and 7 blue chips. What is the probability that he selects a red or blue chip? A. 1/3 B. 7/15 C. 2/3 D. 14/15

The following factors are not prime: (x2 - 7x) (7x+21). What remains to be factored? (can be more than one answer). A) Factor out the 7x from the product. B) Factor out an x from the first binomial. C) Factor out a 7 from the second binomial

The length of an engine bolt for a lawnmower is 2.675 centimeters. The length of an engine bolt for another lawnmower is 2.5848 centimeters. What is the difference between the lengths of these two bolts? A. 0.091 centimeters B. 0.0908 centimeters C.

Use a cofunction identity to write an equivalent expression: sin (pi/6 - theta)

A restaurant uses 6 1/2 pounds coffee per day. How many grams the do they use each day?

The vertices of a triangle are A (0, 0), B (3, 8), and C (9, 0). What is the area of this triangle?