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Alla [95]
3 years ago
15

Can somebody help me with this question?

Mathematics
1 answer:
umka2103 [35]3 years ago
5 0

9514 1404 393

Answer:

  (d)  b/a

Step-by-step explanation:

The applicable rule of exponents is ...

  (a^b)/(a^c) = a^(b-c)

__

Then the expression simplifies to ...

  b^-2/(ab^-3) = b^(-2-(-3))/a = b^1/a = b/a

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(3)-2<br> Evaluate exponent
olga nikolaevna [1]

Answer:

3^{-2} = \dfrac{1}{9}

Step-by-step explanation:

Definition of negative exponent:

a^{-n} = \dfrac{1}{a^n}

In our case, a = 3 and -n = -2.

3^{-2} = \dfrac{1}{3^2}

Now we just evaluate the power in the denominator.

3^{-2} = \dfrac{1}{3^2} = \dfrac{1}{9}

7 0
3 years ago
Rita is hiking along a trail that is 13.7 miles long.So far she has hiked along one-tenth of the trail. How far has Rita hiked.
erastovalidia [21]
Hello there, my fellow human being!

The answer is 1.37 miles.

Hope this helped!
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8 0
3 years ago
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the flag pole in front of the school casts a shadow 40 feet long when the measurement of the angle of elevation to the sun is 31
san4es73 [151]

Answer:

I would say that the flag pole is about 120 feet long. Recall that this is an estimation.

Step-by-step explanation:

8 0
3 years ago
Can someone please answer A and B please?
marta [7]

2 bags

7 apples


A) Instead of a lets say:

a = 1, 2 , 3

If a =1  then, (you already know there are 2 bags) you have 1 apple in each bag, making total of 2 apples

If a =2 then you are having 2 apples in each bag making total of 4 apples

If a =3, 3 apples in each bag, making total of 6 apples

Conclusion:

2 * 1 = 2

2 * 2 = 4

2 * 3 = 6

See the difference & pattern here

Now lets do with a

2 * a = 2a


B) If a = 6

then,  2*6 = 12

lets continue from a =3

2*4=8

2*5=10

2*6=12

See the pattern again


Tip: Drawing making problem understand better.

6 0
3 years ago
Can someone help me on the last question?
BabaBlast [244]

Answer:

I like saying rise over run because it helps me remember that rise means how many units you move up or down from point to point which on a graph would be a change in the y values. Also that run means how far left or right you move from point to point which on the graph would mean a change of x values.

6 0
2 years ago
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