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Rzqust [24]
3 years ago
5

Help please I ain't very good at math​

Mathematics
2 answers:
ruslelena [56]3 years ago
6 0

the idea of showing that multiplying by 1 is true because as long as A and B follow the same ratio pattern (ie. 1n:2n is the same as 2n:4n) the statement will always be true

ra1l [238]3 years ago
3 0

Answer:

the idea of showing that multiplying by 1 is true because as long as A and B follow the same ratio pattern (

Step-by-step explanation:

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3.41 rounded to the nearest tenth please help
horrorfan [7]
Your answer would be 3.4

Anything under 5 it stays the same and anything over 5 it goes up one
5 0
3 years ago
Read 2 more answers
What is the greatest common factor of 24 and 54
exis [7]

the gcf 24 and 54 is 6

  1. 24=2x2x2x3
  2. 54=2x3x3x3

therefore 2x3=6

5 0
4 years ago
Read 2 more answers
1) Luis uses 1.6 liters of gasoline each hour he
Wewaii [24]

Answer:

9.28 Liters

Step-by-step explanation:

All we have to do is multiply the time by amount her time unit.

8 0
4 years ago
Una piscina rectangular de 15 m de largo por 9m de ancho está rodeada por un camino de cemento de ancho uniforme. ¿Si el área de
malfutka [58]

Answer:

El ancho del camino es 1.5 m.

Step-by-step explanation:

Una piscina rectangular posee 15 m de largo por 9 m de ancho.

El área de un rectángulo es igual a la base por la altura. Es decir, lado mayor por lado menor. Entonces el área de la piscina es 15 m* 9 m= 135 m²

La piscina está rodeada por un camino de cemento de ancho uniforme, al cual se denomina x y estará en unidades de metros (m). Entonces el largo de la piscina sumado al ancho a ambos lados de la piscina será 15 m + 2*x, mientras que el ancho de la piscina sumado al largo a ambos lados de la piscina es 9 m + 2*x. Entonces este área se puede expresar como

(15 m+2*x)*(9 m+ 2*x)

Entonces al área de la piscina sumado al camino se le resta el área de la piscina y da como resultado el área del camino, cuyo valor es 81 m²:

El área total - área de la piscina =  área del camino

(15 m +2*x)*(9 m+ 2*x) - 135 m²= 81 m²

Resolviendo:

15*9 m²+15*2*x + 9*2*x + 2*x*2*x - 135 m²= 81 m²

135 m² + 30*x + 18*x + 4*x² - 135 m²= 81 m²

48*x + 4*x² = 81 m²

48*x + 4*x² - 81 m²= 0

Siendo una ecuación cuadrática donde a= 4, b= 48 y c= -81, entonces:

\frac{-48+-\sqrt{48^{2}-4*4*(-81) } }{2*4}

Resolviendo:

\frac{-48+\sqrt{48^{2}-4*4*(-81) } }{2*4}= 1.5

\frac{-48-\sqrt{48^{2}-4*4*(-81) } }{2*4}= -13.5

Como las distancias solo pueden ser positivas, entonces <u><em>el ancho del camino es 1.5 m.</em></u>

En la imagen adjunta se puede observar un gráfico de la piscina más el camino

5 0
3 years ago
During halftime of a football game a slingshot launches T-shirts at the crowd a T-shirt is launched from a height of 6 feet with
lesantik [10]

Answer:

2.25 seconds

87 feet

[6, 87]

Step-by-step explanation:

The height of a projectile is:

h(t) = -16t² + vt + s

where v is the initial vertical velocity and s is the initial height.

Here, v = 72 and s = 6.

h(t) = -16t² + 72t + 6

This is a downwards parabola.  The maximum is at the vertex.

t = -b / (2a)

t = -72 / (2×-16)

t = 2.25

h(2.25) = 87

It takes 2.25 seconds to reach the maximum height of 87 feet.

The range is from the lowest height (6 feet) to the maximum height (87 feet).  In interval notation:

[6, 87]

5 0
4 years ago
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