The answer is 67°.
Since the parallel sides of a trapezoid are called bases, the bases in our given trapezoid are AB and DC. We know that the corresponding pairs of base angles, such as ∠A and ∠D, or ∠B and ∠C, are supplementary, therefore, their angles add up to 180 degrees:
∠A + ∠D = 180°
∠B + ∠C = 180°
Given that m∠A = 113°, we can calculate for the measure of ∠D:
113° + ∠D = 180°
∠D = 180° - 113° = 67°
Answer:
Expression : 300,000 + 7x% = a
a = 384,000
Step-by-step explanation:
a = population in 4 years
x = every year increased
Expression: 300,000 + 7x% = a
300,000 + 7x% = a
replace x what will its population be in x years variable (this is 4)
300,000 + 7(4)% = a
multiply 7(4)
300,000 + 28% = a
Add 28% of 300,000 to 300,000
384,000 = a
(x-2) + (x-1) + x + (x+1) + (x-2) + (x+3) = 447
6x + 3 = 447
6x = 447 - 3
6x = 444
x = 444/6
x = 74
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