3 years ago

Does this data determine a linear function? A) Yes B) No

Mathematics

2 answers:

USPshnik [31]3 years ago

7 0

No, it doesn’t, this is not a linear function

AysviL [449]3 years ago

5 0

Answer:

A) yes

Step-by-step explanation:

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Leviafan [203]

Should be the last one, 43, 52, 61.

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3 years ago

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The school spirit club spent $320.82 on food and took in $643.59 selling the food How much did the club make

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The school spirit club earned $322.77

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Use the double-angle formula for cosine to establish the identity cos (theta / 2) = ±cos(theta) + 1 / 2 .

Nimfa-mama [501]

Answer:

See explanation and proof below.

Step-by-step explanation:

For this case we want to proof this identity:

$cos(\frac{\theta}{2}) = \pm \sqrt{\frac{1+ cos(x)}{2}}$

And we need to us the double angle formula given by:

$cos^2 (x) = \frac{1+ cos (2x)}{2}$

If we use a substitution for example $x = \frac{\theta}{2}$ we see that the double angle formila is given by:

$cos^2(\frac{\theta}{2}) = \frac{1+ cos (2\frac{\theta}{2})}{2}$

And we got:

$cos^2(\frac{\theta}{2}) = \frac{1+ cos (\theta)}{2}$

And if we apply sqaure root on both sides we got:

$cos(\frac{\theta}{2}) = \pm \sqrt{\frac{1+ cos (\theta)}{2}}$

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4 years ago

Principal fourth root of 81

konstantin123 [22]

Answer: 3

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3 x 3 x 3 x 3 is 81

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3 years ago

I need help plz!!!!!!!!!!!!

kramer

Answer:

54 and 36

Step-by-step explanation:

45% of 120 students chose the amusement park , then

45% of 120 = 0.45 × 120 = 54

54 students chose the amusement park

45% of 180 = 0.45 × 180 = 81

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36 more students chose the amusement park than the water park

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