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AlladinOne [14]
3 years ago
12

Kims age was twice that of her sister. When you add Kim's age to her sisters age you, you get 36. How old is each sister?

Mathematics
1 answer:
Hunter-Best [27]3 years ago
3 0
Set kim's age to 2x. Set her sister's age to x. Now solve the equation:

2x+x=36
3x=36
x=12.

Remember, her sister's age was x, and x=12, so her sister is twelve. Kim's age is 12*2, so her age is 24.
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Un escalador sube 225m de altura. El asenso lo hizo en 3 etapas. En la primera subio un quinto en la, en la tercera un cuarto. ¿
kiruha [24]

Answer:

Segunda etapa= 123.75 metros

Step-by-step explanation:

Altura total= 225 metros

<u>En la primera estapa subió el 20% (un quinto):</u>

Primera etapa= 225*0.2= 45 metros

<u>En la tercera etapa subió 25% (un cuarto):</u>

Tercera etapa= 225*0.250 56.25 metros

Ahora debemos determinar cuánto subió en la segunda etapa:

Segunda etapa= altura total - total subido

Segunda etapa= 225 - (45 + 56.25)

Segunda etapa= 123.75 metros

6 0
3 years ago
Divide 2/4 in half means half of 2/4?
andre [41]
Yes, that is what that means.
Also, half of 2/4 is 1/4.
\frac{2}{4}/2=\frac{1}{2}*\frac{1}{2}=\frac{1}{4}
7 0
3 years ago
Read 2 more answers
Sarah and Nancy each drive 600 miles. Sarah's average speed is represented by x miles per hour. What does the denominator of the
arlik [135]

The denominator of the rational expression 600/(x-4) is x-4.

We know x represents Sarah’s average speed. So x-4 will also represents the average speed. And x-4 represents 4 mph less than the average speed of Sarah, x.

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6 0
3 years ago
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Help on 13-15 please.
elena55 [62]
13).
(600 ft / 5 min) x (1min / 60sec)

= (600 · 1 / 5 · 60) (ft · min / min · sec)

= 2 ft/sec
______________________________

14).
(120 yd / 2 min) x (3ft / 1yd) x (1min /60 sec)

= (120 · 3 · 1 / 2 · 1 · 60) (yd · ft · min / min · yd · sec)

= 3 ft/sec
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15).
(60 mile /1 hour) x (5,280ft / 1mile) x (1hr / 3,600sec)

= (60 · 5,280 · 1 / 1 · 1 · 3,600) (mile · ft · hour / hour · mile · sec)

= 88 ft/sec . 

4 0
3 years ago
You begin solving the equation 4−5x=59 by subtracting 4 from both sides. Which is the best choice for Step 2?
valentina_108 [34]
This Would Be Divide Both Sides By 5. You Have To Isolate The Variable To One Side Of The Equation So It Is By Itself.
3 0
3 years ago
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