Answer:
4t^2 + t - 1.
Step-by-step explanation:
(3t^2 + 2t −2 )+(t^2 + 3t − 4) − (4t − 5)
= 3t^2 + 2t −2 + t^2 + 3t − 4 - 4t + 5
= 4t^2 + t - 1.
The domain of the relation is B
Answer:

Step-by-step explanation:
The given problem is a subtraction problem between fractions. The first step in a problem like this is to convert both fractions to a common denominator. In other words, multiply both the numerator and denominator of a fraction by the same value such that the denominator of one of the fractions is the same as the other fraction. The numerator of a fraction is the value over the fraction bar, whereas the denominator is the value under it. Multiplying any fraction by a number over itself is the same as multiplying it by one, thus, the equation will remain true, and be equivalent to the original expression.

Convert to a common denominator,


Now perform the subtraction, subtract one numerator from the other, remember, do no perfrom any more operations with the denominators,

the answer to n/2=-7 is n=14
Answer:

Step-by-step explanation:
we know that
An isosceles triangle has two equal sides and two equal interior angles
In this problem
Triangle CDE is an isosceles triangle
because
EC ≅ DE
therefore
----> equation A
Remember that
The sum of the interior angles in any triangle must be equal to 180 degrees
so
----> equation B
---> equation C
substitute equation A and equation C in equation B


