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m_a_m_a [10]
3 years ago
5

What is the value of x? Help me please

Mathematics
1 answer:
Basile [38]3 years ago
5 0
168 degrees
180-12=168
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Factor 2x2 − 24x + 72.
DiKsa [7]
2x^2-24x+72=2(x^2-12x+36)=2(x^2-2x\cdot6+6^2)=2(x-6)^2\\\\Answer:C.
4 0
4 years ago
Samuel tiene 11 cajas con mosaico cuadrado de 20 cm por lado y quiere cubrir una pared que mide 3 cm y de largo 2 cm de alto.Si
kirza4 [7]

Answer: Samuel no necesita comprar mas cajas.

Step-by-step explanation:

Cada mosaico es un cuadrado de 20cm por lado.

Entonces el área de cada mosaico es:

A = 20cm*20cm = 400cm^2.

En una caja hay 14 mosaicos, entonces cada caja puede cubrir:

14*400cm^2 = 5,600cm^2.

Ahora, el problema dice que la pared mide 3cm por 2 cm.

En ese caso, con un solo mosaico cubrirías la pared, entonces supongo que esta mal escrito.

Las dimensiones de la pared serian 3 metros por 2 metros.

1 m = 100cm

Entonces la pared es 300cm por 200cm.

El área total de la pared seria:

300cm*200cm = 60,000cm^2.

Ahora, cada caja de mosaicos cubre 5,600 cm^2.

Entonces el numero de cajas necesarias para cubrir toda la pared es:

(60,000cm^2)/(5,600cm^2) = 10.7

Entonces se necesitan 10.7 cajas para cubrir esa pared, y Samuel tiene 11, entonces el no necesita comprar mas cajas.

4 0
3 years ago
Simplify the expression: 7 - 7(5 + x) - 9x <br> Your answer
Gekata [30.6K]

Answer:

-16x-28

Step-by-step explanation:

Break it into little pieces; start with distributing the -7:

-7(5+x)

-35-7x

Now add the rest of the problem: 7-35-7x-9x

Combine like terms: 7-35               7x-9x

7-35=-28             7x-9x=-16x

Rearrange so the coefficient and variable are upfront, giving you:

-16x-28

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3 years ago
Solve the equation.<br><br> 3=x3.3
ICE Princess25 [194]

Answer:

9.9

Step-by-step explanation:

7 0
3 years ago
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Jeremys father is 11 less than jermeys age squared.if Jeremy’s father is 53, how many years older is Jeremy’s father than Jeremy
postnew [5]

Answer: 26

Step-by-step explanation:

4 0
3 years ago
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