Questions in mathematics

Questions in mathematics

[Free] Jerry had a total of 30 pens and pencils. He decided to trade all his pens with his friend for pencils. If he traded every pen for two pencils, he would have 48 pencils. How many pens and how many pencils did he have before the trade?

[Free] The pair of polygons is similar. Find the value of x. I really need help. Thanks <3

[Free] Identify the slope and the y-intercept of each line.

[Free] How do I solve for x in the equation 20 = 4x?

[Free] Explain why graphs often show only the first quadrant and omit the other three quadrants.

[Free] If a hummingbird were to get all of its food from a feeder, then a 16 oz nectar feeder could feed about 80 hummingbirds a day. How many hummingbirds would you expect to be able to feed with a 12 oz feeder?

[Free] Baseball cards come in packages of 8 and 12. Brighton bought some of each type for a total of 72 baseball cards. How many of each package did he buy?

[Free] Convert 2300 meters into kilometers.

[Free] What is the unit rate of 72 ounces in 6 steaks?

[Free] A company has a monthly profit of $6,400. The next month, they have a loss of $4,700. What expression would you use to find the difference in profit between the two months? Possible choices are: A. -4,700 - 6,700 B. 4,700 - 6,700 C. 6,400 - (-4,700) D. 6,400 - 4,700