For methane: LEL = 5% by volume HEL = 17% by volume. Which mixtures of methane with air will be explosive: (select 2 that apply).  

A slow leak from an underground storage tank has contaminated both the soil and the groundwater as shown below. Soils contaminated below the tank is in the shape of a rectangular prism as shown in the figure. The contaminated groundwater occupies an area in the shape of a rectangular pyramid as shown in the figure.  Soil density:      1800 Kg/m3 Porosity:           0.30  Contaminant concentration in soils:                    1950 mg/Kg Contaminant concentration in groundwater:          145 mg/L Amount of contaminant present in the groundwater is most nearly (kg): Volume of a rectangular pyramid = base area x height / 3   

Bulging frontal bones and nasal bridge depression, along with rhinitis, and circumoral rash in a 1 month old are signs of which of the following?

The normal adult testicle should be:

On digital rectal exam of a 78-year-old man, the prostate is hard and asymmetrically enlarged. This finding is most concerning for:

Which of the following urinary symptoms in men is most suggestive of benign prostatic hyperplasia (BPH)?

Purulent, cloudy or yellow discharge from the penis is suggestive of 

A buyer has inventory with the following figures: Total Merchandise Handled at Cost = $65,600 Total Merchandise Handled at Retail = $150,000   Find: Cumulative markup percentage (CMU) 

A buyer has inventory with the following figures:                                                  COST                                      RETAIL          Opening Inventory               $30,000                                     $62,000 Purchases                             $25,000                                      $70,000 Net Transfers OUT               $10,000                                     $21,000   Find: TOTAL  Merchandise Handled at RETAIL            

If SHORTAGES are $30,000 and also 3.50%, what are NET SALES? (rounded to the nearest dollar) HINT: use Base, Rate, and Percent Amount formula