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hichkok12 [17]
3 years ago
7

Express your answer in scientific notation. 1.4 x 10^9 - 8.6 x 10^8

Mathematics
1 answer:
garik1379 [7]3 years ago
4 0

Answer:

-7.5 x 10^1

Step-by-step explanation:

subtract numbers and exponents and make sure that number is between 1 and 10.

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Solve the system by the elimination method.
NikAS [45]
     2x+3y-10=0    (1)
+
     4x-3y-2=0       (2)
    ____________
     6x    -12=0      (if you just want the resulting equation. It is 6x-12=0)
               x=2 
take x=2 and put it into equation (2)
4(2) -3y -2=0
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5 0
3 years ago
Find the slope and y-intercept<br> 4x+2y=-6
EleoNora [17]
<span>4x+2y=-6
2y = -4x - 6
  y = - 2x - 3
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answer
slope = -2
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8 0
3 years ago
Read 2 more answers
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

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7 0
3 years ago
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musickatia [10]

Answer:

(1, 4.5 )

Step-by-step explanation:

The required point is at the midpoint of AB

Use the midpoint formula

Given A(4, 3) and B(- 2, 6 ), then

midpoint = [ 0.5(4 - 2), 0.5(3 + 6) ] = (1, 4.5 )

5 0
3 years ago
Read 2 more answers
The sales tax in Kadisha's state is 5%. Kadisha says she computes a 15% tip by multiplying the tax shown on her bill by 3. For a
lapo4ka [179]

Explanation:

Kadisha's method works because 15% is 3 times 5%, and both amounts are computed on the amount of the bill before tax is added.

7 0
3 years ago
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