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MakcuM [25]
3 years ago
13

An you help solve this x= -10+i√300/2 ​

Mathematics
1 answer:
Feliz [49]3 years ago
7 0
If this was a “solve for x” problem then your answer is: x=−10+5i√6
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A bookstore sells books at 25% profit calculate the percentage of sales price to cost price ?
g100num [7]

Answer:

Cost price=100%

Step-by-step explanation:

3 0
3 years ago
En una olimpiada matemática, cada estudiante recibe un punto por cada pregunta acertada. En la siguiente tabla de frecuencias se
Leviafan [203]

La tabla relacionada con la pregunta se puede encontrar en la imagen adjunta a continuación:

Responder:

70%

Explicación paso a paso:

probabilidad de seleccionar aleatoriamente a un participante que haya obtenido entre 71 y 85 puntos:

Probabilidad = resultado requerido / Total de resultados posibles

Resultados posibles totales = Sumando la frecuencia para obtener el número total de estudiantes = (9 + 12 + 12 + 18 + 9) = 60 estudiantes

Resultado requerido:

Clase :

(71 - 75) = frecuencia = 12

(76 - 80) = frecuencia = 12

(81 - 85) = frecuencia = 18

Total = (12 + 12 + 18) = 42 = resultado requerido

Por tanto, P = 42/60 = 0,7 = (0,7 * 100%) = 70%

4 0
3 years ago
The room-size ranges suggested above for a 4-member family (family with 2 children) and a family with three teenagers are differ
irinina [24]
 Teenagers require more space than smaller children. 
3 0
3 years ago
Read 2 more answers
What is the value of x?
Andrew [12]
<h3>Answer:</h3>

x = 25

<h3>Solution:</h3>

\frac{40}{40+24} = \frac{x}{x +15} \\ \frac{40}{64} = \frac{x}{x +15} \\ \frac{5}{8} = \frac{x}{x +15} \\ 5(x +15) = 8x \\ 5x +75 = 8x \\ 75 = 3x \\ 25 = x

<h3>Explanation:</h3>

Angle BDR is congruent to angle QDC because they share common angles. Angles BRD and QCD are congruent because lines BR and QC are <em>parallel</em> and line DR intersecting them creates <em>two corresponding angles</em>, BRD and QCD. Because of the reasons I mentioned, Triangles DBR and DQC are similar by Angle Angle Similarity Postulate and because these two triangles are similar they must share the same scaling factor of corresponding sides (example: \frac{DQ}{DB}\\). So \frac{DQ}{DB} = \frac{DC}{DR}\\.

7 0
4 years ago
each table below shows the time and distance samantha and her friends traveled four different road trips. in which table is ther
Nataly [62]
A 120/2 = 60
220/4 = 55
A is not

B 70/1 = 70
150/2 = 75
B is not

C 160/2 = 80
240/3 = 80
400 / 5 = 80
480 / 6 = 80
C is linear

D 75/1 = 75
150/2 = 75
225/4 =56.25
D is not
7 0
3 years ago
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