The answer is B because C and D are not true. Angle-Angle theorem does not prove congruency. Hypotenuse-Leg does because having a hypotenuse means that the triangle is a right angle triangle, which means that 2 sides and an angle are congruent in the triangles. By Side-Side-Angle Theorem, the triangles are congruent.
1 would be 4 with an open circle that points to the right
2 would be 6 with a closed circle that points to the left
Answer:
Area of sidewalk = 
Bags of concrete = 277
Step-by-step explanation:
The diameter of the circular fountain is 28 ft. Radius = 28 / 2 = 14 ft
The thickness of the sidewalk is 3.5 ft. This means they want to add 3.5 ft to each radius of the fountain.
To find the area of the sidewalk alone, we have to find the area of the sidewalk alone and then subtract it from the area of the sidewalk and fountain.
That is:
The fountain is circular and its radius is 14 ft. Hence, its area will be:
The sidewalk and fountain together also form a circular shape. Their joint radius will be:
R = 14 + 3.5 = 17.5 ft
Hence, the area will be:
Hence, the area of the sidewalk alone will be:
This is the area of the sidewalk.
For every square foot (
), 0.8 bag of concrete will be used. This means that for :
Bags of concrete = 0.8 * 346.5 = 277.2 ≅ 277
At least 277 bags of concrete will be used for the new sidewalk.
Based on the information the number of people that will there after 20 years is: d.) 2.97 million.
Using this formula
P(t) = Population ×(1+ rate)^t
Where:
Population=2 million
rate=2%
time=20 years
Let plug in the formula
P(t) = 2×(1+.02)^20
P(t) = 2×(1.02)^20
P(t) = 2×1.485947
P(t) = 2.97 million
Inconclusion the number of people that will there after 20 years is: d.) 2.97 million.
Learn more about population here:brainly.com/question/25630111
<span>-9/10 divided by -6/15
Convert the division sign to multiplication while flipping the fraction -6/15 to -15/6.
-9/10 * -15/6
Multiply the numerator(-9) by the other numerator(-15) while multiplying the denominator(10) by the other denominator(6)
Final Answer: 135/60 or 2.25 or 2 1/4 *All answers are equivalent to each other.</span>
