How do you calculate the surface area of a triangular pyramid

Which expression is NOT equivalent to the others? 152+151*131*131 152*151*132 15*15*15*13*13 153*132

Wills, Donald, and Maya found a quarter, a dime, a nickel, and 2 pennies when they were cleaning the house. They traded their dad for some other coins that were worth the same amount of money and split it evenly. How much did they get

what is 3774 divided by 37

Find the value of 21 - 18 : 3 · 2.

A rectangular lawn measures 7m by 5m. A uniform border of flowers is to be planted along two adjacent sides of the lawn, as shown in the diagram. If the flowers that have been purchased will cover an area of 6.25 m^2, how wide is the border?

63 as a fraction in simplest form.

The sum of four times a number and eight is 24 find the number

A builder buys 16.1 acres of land to develop a new set of walking trails and baseball fields. The builder plans to use 0.25 of the land for baseball fields. How many acres will the builder use for the baseball fields?

Which of the following options best describes the function graphed below? A graph shows a slanting straight line that starts at the origin and goes up.

Describe t-test and explain how to interpret its results?