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garik1379 [7]
3 years ago
9

Provide an expression that is equivalent to -3(8+2) ?

Mathematics
1 answer:
aliina [53]3 years ago
5 0

Answer:

-3(8+2)=-30

Step-by-step explanation:

-3(8+2)

(8+2)=10

-3×10=-30

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3 years ago
The golden ratio is a solution to a quadratic equation.
Crank

Answer:

Below.

Step-by-step explanation:

a.    Φ^2 − Φ − 1 = 0

Φ2 − Φ = 1

(Φ - 0.5)^2 - 0.25 = 1

(Φ - 0.5)^2 = 1.25

Φ - 0.5 = √(1.25)      (We only take the positive root).

Φ  = 0.5 + √(1.25)

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3 years ago
find the curved surface area and total surface area of a right circular cylinder whose height is 15 cm and the radius of the bas
otez555 [7]

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

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

CSA = 2 * 22* 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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TSA = 2 * 22 * 22

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Answer:

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Each answer, when you divide, all equal to 52

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