Please excuse my dear aunt sally or pemdas
Answer:
x = 29.7 or 29.69848480
Step-by-step explanation:
Use the formula a² + b² = c²
21² = 441
20² = 400
400 + 441 = 882
√882 = 29.7
You square the number at the end to cancel out the squared number, since both 21 and 20 aren't originally squared.
A polynomial is an <span>expression of more than two algebraic terms. Among the given expressions above, the answer that is not a polynomial would be option D. -4/y. This does not follow the rules of being a polynomial because y is a denominator; therefore, this is not a polynomial.</span>
A) the graph shows the cost is $ per gallon
B) 1 gal costs 4$ that means
0,5 (1/2) gal = 2 $ *divided by 2*
