<span>Note D = r(t)
20min = 1/3 hr and 10min = 1/6 hr

(1/3hr)30mph + (1/6hr)3mph = 10.5 mi, the total distance traveled.

total distance / total time = average speed = 10.5/(1/3 + 1/6) = 10.5/(2/6 + 1/6)
10.5mi/.5hr = 21mph

Hope This Helps </span>

3 0

4 years ago

If triangle ghj is congruent to triangle lmk, with a scale factor of 5:6, find the perimeter of triangle ghj

3241004551 [841]

Answer: 35

Step-by-step explanation:

1. By definition, the perimeter of a triangle is the sum of the lenght of each side.

2. Then, the perimeter of the triangle LMK is:

$P_{LMK}=14+17+11\\P_{LMK}=42$

3. If both triangles are congruent and the scale factor is 5:6 (Which you can rewrite as a fraction: 5/6), you must multiply the perimeter of the triangle LMK by this scale factor.

4. Then, you have that the perimeter of the triangle GHJ is:

$P_{GHJ}=42*\frac{5}{6}=35$

6 0

4 years ago

Cube A has an edge length of 3 inches. Cube B has an edge length double that of Cube A.

Volgvan

Answer:

216

Step-by-step explanation:

Cube A volume

3*3*3=27

Cube B volume

6*6*6=216

3 0

2 years ago

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