To solve the negative exponents , we have to apply the negative exponent rule or the fractional exponent rule.
<h3>How are
negative exponent calculated?</h3>
To calculate the negative exponent we need to remember about the negative exponent that the base is on the opposite side of the fraction. Here , We need to flip the fraction so that the base will be on the other side.
Negative exponent Rule :-
![a^{-n} = \frac{1}{a^{n} }](https://tex.z-dn.net/?f=a%5E%7B-n%7D%20%20%3D%20%5Cfrac%7B1%7D%7Ba%5E%7Bn%7D%20%7D)
Now , we will solve a fraction with negative exponent
For example ; Simplify the fraction ![\frac{3^{-2} }{9^{-2} }](https://tex.z-dn.net/?f=%5Cfrac%7B3%5E%7B-2%7D%20%7D%7B9%5E%7B-2%7D%20%7D)
Solution : ![\frac{3^{-2} }{9^{-2} } = \frac{9^{2} }{3^{2} }= \frac{81}{9}](https://tex.z-dn.net/?f=%5Cfrac%7B3%5E%7B-2%7D%20%7D%7B9%5E%7B-2%7D%20%7D%20%3D%20%20%5Cfrac%7B9%5E%7B2%7D%20%7D%7B3%5E%7B2%7D%20%7D%3D%20%5Cfrac%7B81%7D%7B9%7D)
= 9
Here, 9 is the answer of the above example.
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Answer:
Hi , the answer is 280-140/ 4-2 = 140/2
y = 2/140 x
b . 70 beats each minute
Step-by-step explanation:
we will take a 2 point from the graph
(280,4) , (y1,x1) and (140, 2) , (y2,x2) each point represent a (y,x) point
m = y1-y2 / x1-x2 = 280-140 / 4-2 = 140 /2
now , y/x = 140/2 ... by B. Multiplication we will get y = 2/140 x
b .
from the graph we see that every minute the curve increase 70 beats
Thanks
Answer:
No they are not equal;
a = -13
Step-by-step explanation:
Here, we want to find the value of a
We are gong to use the ratio given
That will be;
a + 3/ 7 + a = 4/5
5(a + 3) = 4(7 + a)
15 + 3a = 28 + 4a
4a - 3a = 15-28
a = -13