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Natali5045456 [20]
2 years ago
14

Need help?!?!?!?!?!?

Mathematics
1 answer:
drek231 [11]2 years ago
3 0

Answer:

1) b = 7.4 yds

2) c = 14.9 yds

Step-by-step explanation:

1) 3^2 + b^2 = 8^2

9 + b^2 = 64

b^2 = 64 - 9

b = sqrt 55

b = 7.4 yd

2) 15^2 + 2^2 = c^2

225+4=c^2

Sqrt(221) = c

C = 14.9

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The manager of a grocery store wants to determine the average amount of money spent at his store as it compares to the average d
Nezavi [6.7K]

Answer:

The average spent at his store is of $37.60.

The average spent at his competitor's store is of $48.53.

Step-by-step explanation:

Average of a data set:

The mean of a data set is the sum of all values divided by the number of values.

His store:

15 orders.

Prices of: 41, 38, 19, 30, 21, 53, 34, 34, 37, 29, 50, 43, 57, 28, 50

The average is:

M = \frac{41 + 38 + 19 + 30 + 21 + 53 + 34 + 34 + 37 + 29 + 50 + 43 + 57 + 28 + 50}{15} = 37.6

The average spent at his store is of $37.60.

Store of the competitor:

15 orders

Prices of: 86, 15, 75, 40, 51, 60, 27, 45, 112, 7, 65, 31, 18, 27, 69

The average is:

M = \frac{86 + 15 + 75 + 40 + 51 + 60 + 27 + 45 + 112 + 7 + 65 + 31 + 18 + 27 + 69}{15} = 48.53

The average spent at his competitor's store is of $48.53.

8 0
3 years ago
7 divided by 11187.4
DedPeter [7]

Answer:

1598.2

Step-by-step explanation:

I used a calculator on this one.

3 0
3 years ago
What is the length of side s of the square shown below?
zaharov [31]

Answer:

A.\: 4 \sqrt{2}

Step-by-step explanation:

\sin \: 45 \degree =  \frac{s}{8}  \\  \\  \implies \:  \frac{1}{ \sqrt{2} }  = \frac{s}{8}  \\  \\  \implies \: s =  \frac{8}{ \sqrt{2} }  =  \frac{8 \sqrt{2}}{2}  \\  \\  \implies \:  \huge \: s = 4 \sqrt{2}

8 0
2 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
Yesterday Bethany sent 60 text messages she said that 15% of those messages were to her best friend how many text messages didn'
V125BC [204]

Answer:

51 messages

Step-by-step explanation:

15% of 60

15*60 = 900

900/100 = 9

and now 60-9 = 51

Final answer: She didnt sent 51 messages to her friend

4 0
3 years ago
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