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olga2289 [7]
3 years ago
15

How do you find the missing side??

Mathematics
2 answers:
dexar [7]3 years ago
6 0
The answer is 12 if I’m not mistaken
guapka [62]3 years ago
4 0

Answer:

\boxed{\ell = 12}.

Step-by-step explanation:

Let \ell denote the length of the missing side. Since \triangle ABC and \triangle AXY share one vertex and \overline{XY}\parallel \overline{BC}, these triangles are similar. This means that:

\dfrac{AX}{AB} = \dfrac{AY}{AC} \iff \dfrac{\ell}{18+\ell} = \dfrac{14}{14+21} \iff\dfrac{\ell}{18+\ell} = \dfrac{14}{35}.

We now multiply both sides by 18+\ell and solve the equation:

\dfrac{\ell}{18+\ell} = \dfrac{14}{35} \iff \ell = \dfrac{36}{5} + \dfrac{14}{35}\ell \iff \ell \left(1-\dfrac{14}{35}\right) = \dfrac{36}{5} \iff \dfrac{3}{5}\ell = \dfrac{36}{5}.

So we now simply get:

\boxed{\ell = \dfrac{36}{3} = 12}.

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4f - 15 = 19f with steps please
4vir4ik [10]

Answer:

<h2><em>-</em><em>1</em></h2>

<em>solution</em>

<em>4f - 15 = 19f \\ or \: 4f - 19f = 15 \\ or \:  - 15f = 15 \\ or \: f =   \frac{15}{ - 15}  \\ f =  - 1</em>

<em>hope </em><em>this </em><em>helps.</em><em>.</em><em>.</em>

<em>Good </em><em>luck</em><em> on</em><em> your</em><em> </em><em>assignment</em>

4 0
3 years ago
Hola alguien puede ayudarme a resolver estos ejercicios por favor Ejercicios de intervalos 1.- Escribe en todas las formas posib
yawa3891 [41]

Answer:

Tenemos 3 formas de escribir cada intervalo, una es con solo texto, la otra es usando los símbolos { <, >, ≤, ≥ }, y la última es con intervalos, donde:

( se usa para " < x "

) se usa para " > x "

[ se usa para  " ≤ x "

] se usa para   " ≥ x "

a) -2 ≤ x ≤3

Esto se escribe como:

"números mayores o iguales que -2 y menores o iguales que 3"

y

[-2, 3]

b) Números mayores que –1

Las otras formas de escribir esto son:

-1 < x

y no tenemos limite mayor, entonces:

(-1, ∞)

con -∞ y ∞ siempre se usan los símbolos ( o )  

c) (–[infinity], –5]  

Las otras notaciones son:

"Un numero menor o igual que -5"

x ≤ -5

d)  Números mayores o iguales que –7 y menores que 19

Las otras notaciones son:

-7 ≤ x < 19

[-7, 19)

e) Números mayores que 9 y menores que 5.

Las otras formas de escribir esto son:

5 < x < 9

(5, 9)

8 0
3 years ago
(-4^-2) (49^-1/2)<br><br> Evaluate the expression
Marizza181 [45]

Answer:

-1/112

Step-by-step explanation:

-4^{-2}=\frac{1}{-4^2}=-\frac{1}{16} \\ \\ 49^{-1/2}=\frac{1}{49^{1/2}}=\frac{1}{7} \\ \\ (-1/16)(1/7)=-1/112

5 0
2 years ago
Write -3 2/5 as a rational number
natali 33 [55]

Answer: Your answer is: -17/5

Step-by-step explanation: You just have to convert the mixed number into an improper fraction.

5 0
3 years ago
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Answer:

2a +7

Step-by-step explanation:

6 0
3 years ago
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