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2 years ago

Mari is adding (-7) and (-2). She adds their absolute values and says the answer is 9.

Mathematics

1 answer:

Helen [10]2 years ago

5 0

Answer:

ari is adding (-7) and (-2). She adds their absolute values and says the answer is 9.

What did Mari forget?

that is neither positive nor negative

to move left on the number line

to keep the sign of the larger integer

to keep the sign of the two integers being adde

Step-by-step explanation:

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2 years ago

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2 years ago

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ki77a [65]

Answer:

$CSA = 660cm^2$ --- Curved Surface Area

$TSA = 968cm^2$ --- Total Surface Area

Step-by-step explanation:

Given

Shape: Cylinder

$h = 15$ -- height

$r = 7$ --- radius

Solving (a): The curved surface area (CSA)

This is calculated as:

$CSA = 2\pi rh$

This gives:

$CSA = 2 * \frac{22}{7} * 7 * 15$

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Solving (b): The total surface area (TSA)

This is calculated as:

$TSA = 2\pi r(h + r)$

This gives:

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