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3 years ago

-k+3k combined like terms to create an equivalent expression

Mathematics

2 answers:

Murrr4er [49]3 years ago

5 0

Answer:

Step-by-step explanation:

Add:

-k + 3k

-1k + 3k

(You have to add -1 + 3)

Hope this helps :)

trapecia [35]3 years ago

3 0

Answer:

Step-by-step explanation:

-k +3k

Factor out a k

k(-1+3)

k(2)

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Determine whether the sequence is arithmetic or geometric. Sequence 1: –10, 20, – 40, 80, ... Sequence 2: 15, – 5, – 25, – 45, .

m_a_m_a [10]

Answer:

Step-by-step explanation:

-10,20,-40,80,...

common ratio=20/-10=-2

it is a geometric sequence.

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it is an arithmetic sequence.

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2 years ago

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2 years ago

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2 years ago

which has greater cenetic energy a car traveling 30.0 km/hr or one twice as heavy traveling at 15 km/hr?

iVinArrow [24]

Answer:

30 km/h car

Step-by-step explanation:

From analysis the car traveling at 30 km/h has greater kinetic energy

we can deduce it from the expression of kinetic energy which is

$KE=\frac{1}{2} mv^2$

Assuming the mass m= 1 kg

For the 30 km/h

$KE=\frac{1}{2}*1*30^2 \\\\KE=\frac{1}{2}*1*900\\\\\KE=450 J$

For the 15 km/h

$KE=\frac{1}{2}*2*15^2 \\\\ KE=\frac{1}{2}*2*225 \\\\\ KE=\frac{1}{2}*450 J\\\\\ KE=225 J$

Though the kinetic energy is a function of mass and velocity, but from our analysis the faster moving object has more KE

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3 years ago

-5×3+7×4-54÷9+2 ( step by step explanation pls do fast...)

Nana76 [90]

Answer:

Step-by-step explanation:

-5×3+7×4-54÷9+2

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2 years ago