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3 years ago

PLS HELP ME AND SHOW WORK.

Mathematics

1 answer:

mario62 [17]3 years ago

3 0

Answer:

$(x-2)^{2} +(y+6)^{2} =49$

Step-by-step explanation:

equation of circle =

$(x-h) ^{2} + ( y-k)^{2} = r^{2}$

( h , k ) = center of origin

$r^{2}$ = radius

origin = ( 2 , -6 )

radius = 7

$(x-2)^2+(y+6)^2=49$

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What is soil erosion

uranmaximum [27]

Answer:

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It occurs when the impact of water or wind separates and removes soil particles, causing the soil to deteriorate. Soil deterioration and low water quality due to erosion and surface runoff have become severe problems worldwide.

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3 years ago

An ice cube is melting, and the lengths of its sides are decreasing at a rate of 0.8 millimeters per minute At what rate is the

julia-pushkina [17]

Answer:

The rate of decrease is: $43.2mm^3/min$

Step-by-step explanation:

Given

$l = 18mm$

$\frac{dl}{dt} = -0.8mm/min$ ---- We used minus because the rate is decreasing

Required

Rate of decrease when: $l = 18mm$

The volume of the cube is:

$V = l^3$

Differentiate

$\frac{dV}{dl} = 3l^2$

Make dV the subject

$dV = 3l^2 \cdot dl$

Divide both sides by dt

$\frac{dV}{dt} = 3l^2 \cdot \frac{dl}{dt}$

Given that: $l = 18mm$ and $\frac{dl}{dt} = -0.8mm/min$

$\frac{dV}{dt} = 3 * (18mm)^2 * (-0.8mm/min)$

$\frac{dV}{dt} = 3 * 18 *-0.8mm^3/min$

$\frac{dV}{dt} = -43.2mm^3/min$

Hence, the rate of decrease is: 43.2mm^3/min

8 0

3 years ago

Which set of angle measures could form a triangle?

777dan777 [17]

Answer: C

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3 years ago

What is the area of a rectangle on a graph 60 units

stira [4]

Answer:

76 unit

Step-by-step explanation:

because added the rectangle size and added the 60 with 16

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3 years ago

A sphere has a volume of 288 pi in^3. Find the surface area, Express your answer in pi.

Tpy6a [65]

Sphere Volume = 4/3 • π • r³
r^3 = sphere volume / (4/3 * PI)
r^3 = 288*PI / (4/3 * PI)
r^3 = 288 / (4/3)
r^3 = 216
r = 6 inches

Sphere Surface Area = 4 • π • r²

Sphere Surface Area = 4 * PI * 36

Sphere Surface Area = 452.389 square inches

4 0

3 years ago

Read 2 more answers