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dsp73
3 years ago
5

Can someone help me with this question?

Mathematics
1 answer:
likoan [24]3 years ago
4 0
1 frequency is 1
2 is 3
3 is 4
4 is 3
last is 3

that's all I understand
hope it helped
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A boat takes 2 hours to travel 15 miles upriver against the current. if the rate of the boat in still water is 12 miles per hour
OLga [1]

Answer:

4.5 mph or 9/2 mph

Step-by-step explanation:

Let x be the rate of the current

Formula: Distance = rate x time

where rate upstream =(12-x) and time =2 hours

15=(12-x)(2)

15=24–2x

2x=24–15

2x= 9

x=9/2=4.5 miles per hour (rate of current)

7 0
2 years ago
the school band will sell pizzas to raise money for new uniforms the supplier charges $100 plus $4 per Pizza the band members se
VladimirAG [237]

100+4x =7x

100=3x

100/3 = 33.33

x = 33.33 round up to 34

they need to sell 34 pizzas to make a profit

6 0
3 years ago
What is the slope of this line?<br><br> - 2/3<br><br> 2/3<br><br> 1/3<br><br> - 1/3
Paul [167]

Answer:

2/3

Step-by-step explanation:

slope =(y1-y2)/(x1-x2)

slope=(1-(-1))/(6-3)

slope =2/3

7 0
3 years ago
1. Una escalera de 4 m de longitud se apoya sobre una pared vertical. Si la distancia entre la base de la escalera a la pared es
enot [183]

Answer:

puedes resolver de dos maneras si diste teorema de Pitágoras lo aplicas

hipotenusa al cuadrado = cateto 2 +cateto 2 ( el 2 significa al cuadrado)

sustituyes

hipotenusa= 4m

cateto= 2,5

hay que hallar el otro cateto que nos daría la altura a la que está la escalera

despejamos y tenemos

cateto 2= hip2 -cat2

cat2=(4)2-(2,5)2=

       =   16-6,25=9,75

luego hallamos la raíz cuadrada de 9,75= 3,12

     

la altura a la que se encuentra es 3,12m

-si aun no diste Pitágoras podes representarlo en una hoja utilizando cm en lugar de metros( a escala). trazas el triángulo rectángulo la base te la da la distancia a la cual se encuentra la escalera de la pared es decir 2,5cm trazas la hipotenusa de 4cm de manera que coincida con el cateto opuesto , y mides el valor de este ,será de 3,12cm no olvides que la respuesta la debes dar en metros ya que es la unidad de medida que te da.

4 0
2 years ago
What is the mathematical formula for finding the volume of a pyramid
Marta_Voda [28]
Volume of a pyramid= 1/2 * base area * height 
3 0
3 years ago
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