Which expression is equivalent to 5 + 2x + x - 3

5x

3x + 2

7x - 2

3x + 8

Use the formula for the ares of a trapezoid A=h (b^2+b^2/2) = where A is area b1 and b2 are the length of the bases and h is the height to answer the question how many square fet of grass and there on a trapezoidal field with a height of 75 ft bases

A random sample of n observations is selected from a normal population to test the null hypothesis that muμequals=10. Specify the rejection region for each of the following combinations of HSubscript aa , alphaα , and n. a.

A bag contains nickels, quarters and pennies. If a handful of coins brings in five nickels, 3 quarters, and nine pennies, how much money is expected to be in the bag if 90 coins are in the bag?

Find the value of two number if their sum is 12 and their different is 4

A lab orders a shipment of 100 rats a week for experiments that the lab conducts. Prices for each weekly shipment of rats follow the distribution below. Suppose the mean cost of the rats turned out to be $ 12.63 per week. Interpret this value.

Cathy earns $13.50 per hour for the first 40 hours worked in a week and $20.25 per hour for hours over 40. If she earns $661.50 one week.

Tell which property is being illustrated. 13 + (29+7) = 13 + (7+29)

8$ of 25$ earned as profit what is the percentage

Which of the following is equiangular and equilateral? A. rhombus B. square C. rectangle D. parallelogram

Ryan works mowing lawns and babysitting. He earns $8.20 an hour for mowing and $7.70 an hour for babysitting. How much will he earn for 3 hours of mowing and 7hours of babysitting?