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4 years ago

F(x)=x^2+2x-24? How to solve

Mathematics

1 answer:

sineoko [7]4 years ago

5 0

Step-by-step explanation:

F ( x ) = x² + 2x - 24

{ factorising by middle term splitting method }

[ 24 = 2 × 2 × 2 × 3 ]

F ( x ) = x² + 6x - 4x - 24

F ( x ) = x ( x + 6 ) -4 ( x + 6 )

F ( x ) = ( x + 6 ) ( x - 4 )

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Naomi plans to attend a four-year college that costs a total of $21,800 per year. Her family invests $9,500 in an account that e

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3 years ago

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Calcula la longitud en YARDAS de

tatiyna

Answer:

Las longitudes solicitadas en yardas son:

Trayecto A = 109.361 yardas.
Trayecto B = 20.231785 yardas.

Step-by-step explanation:

Para hacer la conversión de unidades que requieres en el ejercicio, debes saber que:

1 metro = 1.09361 yardas

Con ese factor de conversión tú puedes hacer reglas de tres para calcular las medidas que requieres. En el caso del trayecto A:

Si:

1 metro = 1.09361 yardas
100 metros = X

Entonces:

$x=\frac{100m *1.09361yardas}{1m}$

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x = 100 * 1.09361 yardas
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En este caso, el trayecto A en yardas corresponde a 109.361 yardas. El mismo procedimiento puede aplicarse para el trayecto B:

Si:

1 metro = 1.09361 yardas
18.50 metros = X

Entonces:

$x = \frac{18.50m*1.09361yardas}{1m}$

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x = 18.50 * 1.09361 yardas
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3 years ago

An architect planned to construct two similar stone pyramid structures in a park. The

kondaur [170]

Answer:

1) Change the length of side AB to 2 feet

Step-by-step explanation:

Given that both structures are similar, it follows that the ratio of their corresponding lengths are equal.

To find out what should be the correct length of AB that she should change to, set up the proportion showing the ratio of 2 corresponding lengths of both structures. Thus:

$\frac{PR}{AC} = \frac{PQ}{AB}$

We will assume AB is unknown.

PR = 7.5 ft

AC = 2.5 ft

PQ = 6 ft

Plug in the values into the equation

$\frac{7.5}{2.5} = \frac{6}{AB}$

Cross multiply

$AB*7.5 = 6*2.5$

$AB*7.5 = 15$

Divide both sides by 7.5

$AB = 2$

The architect should change the length of AB to 2 ft

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3 years ago

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Licemer1 [7]

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3 years ago

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A software firm survey of 595 randomly selected adults showed that 38% of them would erase all of their personal information on

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Answer:

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-we know that the value of probabilities are in the range [0,1]:

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$H_A:p\neq 0.38$

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3 years ago