3 years ago

Which statement is true about the graphed function?

Mathematics

1 answer:

Viefleur [7K]3 years ago

4 0

Greetings from Brasil....

Remember that F(X) = Y

Looking at the graph we can conclude that:

Y > 0 when X < - 4 (up until -∞)

Y = 0 when X = - 4

Y < 0 when X > - 4 (up until +∞)

So choose:

[F(X) = Y] > 0 over the interval ]-∞; -4[

(last option)

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Kazeer [188]

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3 years ago

What is the average (arithmetic mean) of the first 90 measurements in a certain list of 92 measurements? (1) the average of the

marishachu [46]

The sum of all the measurements is just the average times the number.

$\bar x = \frac{1}{n} \sum_{i=1}^n x_i$

$\sum_{i=1}^n x_i = n \bar x$

So if the average of all 92 is 7 the sum of those is $92 \times 7$

The average of the last two is 7.2 so their sum is $2 \times 7.2$

That means the sum of the first 90 is $92 \times 7 - 2 \times 7.2$

so the average of the first 90 is

$\dfrac{92 \times 7 - 2 \times 7.2}{90} = 6.99556$ cm

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3 years ago

Are both students equations correct?

larisa86 [58]

Answer:

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2 years ago

Please help anything is appreciated I will give you Brinley if it’s right

bearhunter [10]

I wish you good lessons