Answer:
2 * 10^3 = 2000.
Step-by-step explanation:
3.8/1.9 * 10^5/10^2
= 2 * 10^3
<h3>a)

</h3><h3>■Dividing a positive and a negative equals a negative: (+)÷(-)=(-)</h3>
<h2>

</h2><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3>
<h2>

</h2><h3>■Multiply the fractions</h3>
<h2>

</h2>
<h3>Hence, Quotient =

</h3>
<h3>b)

</h3><h3>■Convert the decimals into a fractions</h3>
<h2>

</h2><h3>■Dividing a positive and a negative equals a negative: (+)÷(-)=(-)</h3>
<h2>

</h2><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3>
<h2>

</h2><h3>■Multiply the fractions</h3>
<h2>

</h2><h3>Hence, Quotient is

</h3>
<h3>c)

</h3><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3>
<h2>

</h2><h3>■Multiply the fractions</h3>
<h2>

</h2><h3>Hence, The Quotient is

</h3>
Distributive property is
a(b+c)=ab+ac so
first, distribute
remember than (-) times (-)=(+)
-5(3x-8)=(-5)(3x)+(-5)(-8)=-15x+(+40)=-15x+40
so it is -15x+40=-45
the answe ris B
Answer:
LN = 66 cm
Step-by-step explanation:
The 3 parallel lines divide the 2 sides they intersect in proportion, that is
=
, substitute values
=
( cross- multiply )
15LM = 315 ( divide both sides by 15 )
LM = 21
Hence
LN = LM + MN = 21 + 45 = 66 cm