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3 years ago

9

If f(x) = (3x + 8)/(2x - A) and f(0) = -2, what is the value of A?

1 answer:

Mrac [35]3 years ago

5 0

Using the given info, we can determine that
$(3(0) + 8) \div (2(0) - a) = - 2$
simplify
$8 \div - a = - 2$
multiply both sides by -a
and divide each side by -2
$4 = a$
A = 4

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Answer:

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A model car is made to a scale of 1:50 (model: real). If the model has a length of 10 cm, calculate the length of the real car (

Alex_Xolod [135]

Answer:

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Step-by-step explanation:

A model car is made to a scale of 1:50 (model: real).

If the model has a length of 10 cm, calculate the length of the real car (answer in meters).

We have a scale of :

model: real = 1:50

The model has a length of 10cm

Hence:

1 cm = 50 cm

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Cross Multiply

x cm × 1cm = 10 cm × 50 cm

x cm = 10 cm × 50 cm/1cm

x cm = 500 cm

The length of the real car is 500cm

Converting the length of the real car to meters

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100cm × x m = 500 cm × 1 m

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The Length of the real car in meters is 5m

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