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3 years ago

What is the slope of the line joining (5, 9) and (−2, 9)?

Mathematics

2 answers:

mel-nik [20]3 years ago

8 0

Answer:

Step-by-step explanation:

slope = (9-9)/(-2-5) = 0/-7 = 0

answer is C.0

The slope equals 0.

Hope this helps.

solniwko [45]3 years ago

7 0

Answer:

0 or no slope

Step-by-step explanation:

Slope formula:

m = y₂ - y₁ / x₂ - x₁

Two points are given:

(5, 9) (−2, 9)

m = 9 - 9 / -2 - 5

m = 0 / -7

m = $\frac{rise}{run}$

As you can see here and at the result, there is zero rise, so at this point the slope of the line joining (5, 9) and (−2, 9) is zero or no slope

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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 $\frac{dl}{dt} = -0.8mm/min$

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

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

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

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

8 0

2 years ago

X+3=12 solve for x. x =

NeX [460]

Answer:

X is 9

Step-by-step explanation:

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3 years ago

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shtirl [24]

Answer:5

Step-by-step explanation:

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mezya [45]

answer:

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3 years ago

25 less than 4 times a number is 47. What is the number?

snow_tiger [21]

Answer:

Step-by-step explanation:

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