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nevsk [136]
3 years ago
11

Simplify 0.3{x-2y}+0.5x-y

Mathematics
1 answer:
galina1969 [7]3 years ago
7 0
0.3[x-2y] + 0.5x - y

Use the distributive property: a(b-c) = ab - ac

0.3x - 0.6y + 0.5x - y

Now, add/subtract all like terms

0.3x + 0.5x - 0.6y - y

0.8x - 1.6y

If you want, we can simplify that down further to:

0.8(x - 2y)
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a 1 kg ball has 10 joules of kinetic energy and starts to roll up a hill how far up the hill will it be when it stops
AURORKA [14]

Answer:

<em>The ball will roll upto </em><em>1 m.</em>

Step-by-step explanation:

A 1 kg ball has 10 joules of kinetic energy and starts to roll up a hill.

As along the hill the ball rises up, it loses its kinetic energy. The kinetic energy is converted to potential energy.

According to the law of conservation of energy, the kinetic energy plus the potential energy equals a constant.

Here given kinetic energy as 10 J, so this energy will get converted to potential energy.

We know that, potential energy is

P.E=m\cdot g\cdot h

where,

m is the mass, g is the acceleration due to gravity and h is the height.

Putting the values,

\Rightarrow 10=1\times 10\times h

\Rightarrow 10=10 h

\Rightarrow h=1\ m

7 0
3 years ago
Solve in 5 + in 2x = 3
faltersainse [42]

\ln5+\ln 2x=3\\\\\ln10x=3\\\\e^3=10x\\\\x=\dfrac{e^3}{10}

3 0
3 years ago
In the 1970s, due to world events, there was a gasoline shortage in the United States. There were often long lines of cars waiti
Harman [31]

Answer:

A line of cars will be about 9650000 feet

Step-by-step explanation:

Simple:

9.65*1,000,000=9650000

Hope this Helps!

Stay Safe!

7 0
3 years ago
Find the area of the shape below
djverab [1.8K]
Break it down into a rectangle and triangle.
Area of rectangle is lw
One side of the rectangle is 8 (MA)
The other side is 6
Area is 8x6 = 48

Area of a triangle is 1/2 bh
h is 8
b is 10(AZ) - 6 (ME) = 4
Area of triangle is 1/2 (4 x 8) = 12

Add 48 and 12 to get 60
The area is 60
7 0
3 years ago
3x - 3(x+1) - 3<br> Solution for x
sertanlavr [38]

Answer:

-6

Step-by-step explanation:

3x-3(x+1)-3

3x-3x-3-3

-3-3

-6

7 0
4 years ago
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