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grandymaker [24]
2 years ago
7

Tanika drew a line of best fit on a scatter plot as shown below​

Mathematics
1 answer:
REY [17]2 years ago
6 0

Answer:

C. she forgot the minus sign for the first term on the right side of the equation.

Step-by-step explanation:

Tanika's work: 1.02(0.5)+7.09 = y

y = 7.6

She's missing the negative sign before 1.02. Her equation should have been -1.02(0.5)+7.09 = y

y = 6.58

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Andy has a snowball (a perfect sphere) with the radius of 3 cm. He wanted the snowball to be bigger, so he spent four seconds pa
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Answer:

Ratio = \frac{64}{27}

Step-by-step explanation:

Volume of Sphere is given by the formula:

V=\frac{4}{3} \pi r^3

Where

V is the volume

and

r is the radius

Original Volume, given r = 3, would be:

V=\frac{4}{3} \pi r^3\\V=\frac{4}{3} \pi (3)^3\\V=\frac{4}{3}\pi (27)\\V=36\pi

Increased snowball volume:

Radius increased 0.25 per second, he spent 4 seconds, so radius increase:

0.25 * 4  = 1 cm

New radius = 3 + 1 = 4 cm

New Volume would be:

V=\frac{4}{3} \pi r^3\\V=\frac{4}{3} \pi (4)^3\\V=\frac{4}{3}\pi(64)\\V=\frac{256\pi}{3}

Ratio of New Volume to Original would be:

Ratio=\frac{\frac{256\pi}{3}}{36\pi}=\frac{256\pi}{3}*\frac{1}{36\pi}=\frac{64}{27}

This is the ratio for current volume to original volume.

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3 years ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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