Answer:
Step-by-step explanation:
Use Pythagorean theorem,
Base² + altitude² =hypotenuse²
x² + 19² = 21²
x² + 361 = 441
x² = 441 - 361
x² = 80
Write the expression represented by n students divided into 6 groups
1 answer:
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Answer:
(1,2) and (2,-1)
Step-by-step explanation:
we have
----> inequality A
The solution of the inequality A is the shaded area below the dashed line
---->inequality B
The solution of the inequality B is the shaded area above the dashed line
The solution of the system of inequalities is the triangular shaded area between the two dashed lines
If a ordered pair is a solution of the system of inequalities, then the ordered pair must lie on the shaded area
Two points in the solution are(1,2) and (2,-1)see the attached figure
