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Rashid [163]
3 years ago
9

The points B, C, D and E all lie on the same line segment, in that order, such that the ratio of BC:CD:DEBC:CD:DE is equal to 2:

4:5.2:4:5. If BE=44,BE=44, find CD.CD.
Mathematics
1 answer:
makkiz [27]3 years ago
3 0

<u>Recta:</u><em> es una sucesión infinita de puntos. No tiene comienzo ni fin.</em>

<u>Segmento:</u> <em>es una porción de línea definida por sus puntos extremos. Tiene una longitud determinada</em>.

<u>Rayo: </u> <em>es aquella línea que tiene punto de partida en un extremo, pero en el otro se proyecta hasta el infinito. </em>espero que te sirve

Step-by-step explanation:

estellita por favor

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Find the midpoint of the line segment JK if j (4,6) and k(0,-4)
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Answer:

(2,1)

General Formulas and Concepts:

Order of Operations: BPEMDAS

Midpoint Formula: (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})

Step-by-step explanation:

<u>Step 1: Define points</u>

J (4, 6)

K (0, -4)

<u>Step 2: Find midpoint</u>

  1. Substitute:                         (\frac{4+0}{2},\frac{6-4}{2})
  2. Add/Subtract:                    (\frac{4}{2},\frac{2}{2})
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Step-by-step explanation:

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Step-by-step explanation:

We have been given that a car is driving away from a crosswalk. The formula d=t^2+2t expresses the car's distance from the crosswalk in feet, d, in terms of the number of seconds, t, since the car started moving.

We will use average change formula to solve our given problem.

\text{Average change}=\frac{f(b)-f(a)}{b-a}

\text{Average change}=\frac{d(5)-d(1)}{5-1}

\text{Average change}=\frac{(5)^2+2(5)-((1)^2+2(1))}{4}

\text{Average change}=\frac{25+10-(1+2)}{4}

\text{Average change}=\frac{35-3}{4}\\\\\text{Average change}=\frac{32}{4}\\\\\text{Average change}=8

Therefore, the the car's average speed over the given interval of time would be 8 feet per second.

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