The sum of 7 times one number, x, and 4 times a second number, y, is 130. If the sum of the two numbers is 28, find the two numbers. Pls help i need this before school is out.
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He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

What is the length and width of a 84.5 square foot rug? will mark