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3 years ago

What does negative x minus x minus 3x minus 4x equals to?

Mathematics

1 answer:

Fittoniya [83]3 years ago

8 0

-x - x - 3x - 4x

Let's start from left to right. First do -x - x, which is -2x.

-2x - 3x - 4x

Now do -2x - 3x, which is -5x.

-5x - 4x = -9x

-9x is your answer.

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3 years ago

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3 years ago

Adante begins to evaluate the expression 3 1/3 x 5 1/4 using the steps below

il63 [147K]

Answer:

$\frac{35}{2}$

Step-by-step explanation:

To solve this problem we need to write the mixed fraction as a fractional number, as follows:

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3 years ago

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your right Step-by-step explanation:

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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