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3 years ago

Can someone help? Questions above. Thank you!

Mathematics

2 answers:

harina [27]3 years ago

5 0

Answer:

Step-by-step explanation:

19(a) - 50

19(b) - 62

19(c) -

Delicious77 [7]3 years ago

3 0

Answer:

(a) 50; (b) 64; (c) 36

Step-by-step explanation:

(a) The range is (largest value) - (smallest value) = 80 - 30 = 50.

(b) The value of the median is the value of the middle term, after the terms have been arranged in increasing order. When given a graph like this one, you can spot the median easily: It's the x-value of the vertical line inside the box: 64.

(c) Look at the x-values of the two box endpoints: 38 and 74. Subtract the larger from the smaller: 74 - 38. This gives us the IQR: 74 - 38 = 36.

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Identify the vertex for the graph of y = −2x2 − 12x 1.

RUDIKE [14]

Answer: (-3,19)

Step-by-step explanation:

Here the given function is,

$y = -2x^2-12x+1$

$\implies y = -2(x^2+6x)+1$

$\implies y = -2(x^2+6x)+1+18-18$

$\implies y = -2(x^2+6x+9)+19$

$\implies y = -2(x+3)^2+19$

$\implies y = -2(x-(-3))^2+19$

Since, the standard equation of a quadratic function is $y = a(x - h)^2 + k$

Where (h,k) is the vertex of the function.

On comparing the equation of given function with this standard form,

We get, the vertex of the given function is (-3,19)

⇒ First option is correct.

8 0

3 years ago