Answer:
-2
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
The volume of Model A is 48 cm³. The volume of Model B is 40 cm³. 48+40=88.
Answer:
24 g
Step-by-step explanation:
In this context*, PPT means "parts per thousand", so the weight of salt is ...
(24/1000)×(1000 g) = 24 g
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* PPT is often used to mean "parts per trillion". The ambiguity between thousand and trillion, as well as the fact that "trillion" means different things in different countries, has led the National Institute of Standards and Technology (NIST) to discourage the use of that abbreviation.
We need to apply trigonometry for easy calculations.
Let Z represent the ramp.
sin x = wall divided by the ramp
Let x = 7°.
sin 7° = 2.5/Z
We now solve for Z.
Z = 2.5 ÷ sin 7°
Z = 20.5137726212
We round off to the nearest tenth of a foot. This means to round off to the ones place.
Z = 21 feet
Done.
