54 makes sense because it is less than a 90 degree angle and 80 wouldn't go through.
Answer:
C. Use a straightedge to measure the length of the line segment.
Step-by-step explanation:
Two or more lines are said to be congruent when they are approximately equal in length to each other. Construction of congruent line segments involves some steps. And these steps require the use of appropriate constructing instruments and materials.
The given question gives options from which one is a correct step for constructing congruent line segments. The appropriate step from the options given is C. A straightedge can be used to measure the length of the line segment.
This is a confusing question but I'm guessing an equivalent name for 57 is fifty-seven.
Answer:
1100 km
Step-by-step explanation:
The problem doesn't clearly state whether the 380,000 km is from the Earth's surface to the moon's center, or to the moon's surface. Since we'll be rounding to 2 significant figures, it's not enough to make a difference, so I'll assume it's to the moon's center.
Draw circle representing the moon and earth. Draw tangent lines from the earth's center to the edge of the moon. The angle between these lines is the subtended angle. Now draw a line representing the moon's radius from the center of the moon to the point where the tangent line intersects. Notice this forms a right angle.
(See attached diagram)
Using trigonometry:
sin(θ/2) = r / (R + h)
r = (R + h) sin(θ/2)
Given that R = 6400 km, h = 380,000 km, and θ = 20' = 1/3 degrees:
r = (6400 + 380000) sin(1/6 °)
r = 1100
The moon's radius is 1100 km.
X/5 + 12 =25
First, the quotient of x and 4 is simply put into a division as x/4.
Then, 12 more is on the right side of x/4 because my teacher taught me that when it says 12 more, it’s on the right side.
Is equal to means = 25