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lianna [129]
3 years ago
10

Question 18 of 25

Mathematics
1 answer:
Pani-rosa [81]3 years ago
7 0

Step-by-step explanation:

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bsvsbwvqcfsgfafautaufayrayystacayfsugs7y7ay7auq

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Solve the equation -4x+12=-4 for x .
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-4x +12 -12 = -4 -12
-4x = -16
x = 4
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Let U={q, r, s, t, u, V, W, X, Y, Z},
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Answer:

Ooh is theis unions I did it but

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Solve x 2 + 9x + 8 = 0 by completing the square. What are the solutions?
Sindrei [870]

So firstly, what two terms have a product of 8x^2 and a sum of 9x? That would be x and 8x. Replace 9x with x + 8x: x^2+x+8x+8=0

Next, factor x^2 + x and 8x + 8 separately. Make sure that they have the same quantity on the inside: x(x+1)+8(x+1)=0

Now you can rewrite the equation as (x+8)(x+1)=0

Now using zero product property, solve for x:

x+8=0\\ x=-8\\ \\ x+1=0\\ x=-1

<u>In short, the solutions are {-1,-8}, or C.</u>

4 0
4 years ago
A hardcover book has a mass of about 1 kilogram. What could have a mass of less than 1 kilogram? Select all that apply.
insens350 [35]
A key, pencil, and toothbrush
4 0
3 years ago
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3) Margarita manejó 429 km: 42 en la ciudad y el resto, en la autopista.
12345 [234]

Answer:

Margarita gastó <u>$40.43.</u>

Step-by-step explanation:

Tenemos la siguiente información.

<u>km recorridos por Margarita</u>

42 km - ciudad

387 km - autopista

<u>Rendimiento del carro</u>

1 galon cada 28 km - ciudad

1 galon cada 36 km - autopista

Hacemos el siguiente factor de conversión

<u>Ciudad</u>

42 km \times \frac{1\: galon}{28\: km}=1.5\: galones

<u>Autopista</u>

387 km \times \frac{1\: galon}{36\: km}=10.75\: galones

Ahoa, se sabe que 1 galon cuesta $3.30. Por lo tanto, el costo de viaje será:

Total galones = 1.5 + 10.75 = 12.25 galones

Total costo = 3.30*12.25 = $40.43.

Espero te haya servido!

4 0
2 years ago
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