2 years ago

Please help me please will give brainliest

Mathematics

1 answer:

Goshia [24]2 years ago

3 0

It’s C
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Find the value of i^9

Tcecarenko [31]

Answer:

The answer is i (i^9)

Step-by-step explanation:

6 0

2 years ago

If (x+5) is a factor of 3x^2+14x+k, what is the value of k?

kherson [118]

If (x+5) is a factor the equation will equal zero when x=-5 so

3(-5^2)+14(-5)+k=0

75-70+k=0

5+k=0

k=-5

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3 years ago

Newton’s law of cooling states that the temperature of an object changes at a rate proportionalto the difference between the tem

Verizon [17]

Answer:

$\frac{dT}{dt} = -0.05\;min^{-1} (T-70\ºF)$

Step-by-step explanation:

Hi!

Lets call:

T = temprature of the object

T₀ = temperature of surroundings

t = time

The rate of change of T is its derivative with respecto to time. If T > T₀, the object looses heat, so T decreases. Then, being k > 0:

$\frac{dT}{dt} = -k(T-T_0) \\$

In this case T₀ = 70ºF and k = 0.05/min. Then the differential equation is:

$\frac{dT}{dt} = -0.05\;min^{-1} (T-70\ºF)$

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2 years ago

You start at (-3,-2). you move down 1 and left 1 unit. where do you end?

Roman55 [17]

You will end at (-4, -3)

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2 years ago

A washer and a dryer cost $572 combined. The washer cost $78 less than the dryer. What is the cost of the dryer?

Anni [7]

Answer:

$325

Step-by-step explanation:

Let the dryer price be x, then the washer price would be x-78

x+x-78 = 572

2x = 650

x = 325

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1 year ago

Please help me please will give brainliest ​

Please help me please will give brainliest