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lana [24]
3 years ago
11

On a trip, you had to change your money from dollars to British pounds. 

Mathematics
2 answers:
ikadub [295]3 years ago
7 0

Answer:

1 dollar = 0.70 pounds

Step-by-step explanation:

On a trip, you had to change your money from dollars to British pounds.

You got 560 pounds for 800 dollars.

Therefore, for for 1 dollar = \frac{560}{800}

                                          = 0.70 pounds

The unit rate is 1 dollar = 0.70 pounds

irga5000 [103]3 years ago
6 0

Answer:

560/800 = 0.7 pounds per dollar

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Determine the factors of 3x2 + 10x − 8. (Which is the right answer?)
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ANSWER

(3x  - 2)(x + 4)

EXPLANATION

The given quadratic trinomial is

3 {x}^{2}  + 10x - 8

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a{x}^{2}  + bx  + c

We have a=1, b=10 and c=-8

ac =  3  \times  - 8 = - 24

The factors of -24 that adds up to 10 are -2 and 12.

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3 {x}^{2}   + 12x   - 2x- 8

Factor;

3x(x+ 4)  -  2(x + 4)

Factor further;

(3x  - 2)(x + 4)

The last option is correct.

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X2 - 12x -6=0<br> Complete the square
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Answer:

(x - 6)^2 = 42

Step-by-step explanation:

Using " ^ " to indicate exponentiation, we have:

x^2 - 12x -6=0

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Start by taking HALF of the coefficient of x, that is, HALF of -12.  We get -6.

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