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serious [3.7K]
3 years ago
5

Solve for 7 and 8 please

Mathematics
1 answer:
Masteriza [31]3 years ago
8 0
To divide exponents they have to have the same base and then you just subtract the bottom exponent from the top exponent.

7) k × 3^9
----------- =
3^5

k × 3^9-5 =
k × 3^4 =
k × 81 = 81k

8) x^4 × y^10 × 2^11
------------------------ =
y^8 × 2^7

x^4 × y^10-8 × 2^11-7 =
x^4 × y^2 × 2^4 =
x^4 × y^2 × 16=
16x^4y^2
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A nontoxic furniture polish can be made by combining vinegar and olive oil. The amount of oil should be three times the amount o
katen-ka-za [31]

Answer:

Oil: 10.5 oz Vinegar: 3.5 oz

Step-by-step explanation:

If the amount of vinegar is the variable x than the amount of oil is 3x. this means that x+3x=14 or 4x=14. Which means x=3.5 so vinegar is 3.5 while oil is three times that or 10.5.

8 0
3 years ago
What does a equal in 1/2(a-7)=33?​
Dmitriy789 [7]

To find a, you need to isolate/get the variable "a" by itself in the equation:

\frac{1}{2} (a-7)=33    Multiply the inverse of 1/2, which is 2, to get rid of the fraction

(2)\frac{1}{2}(a-7)=(2)33

a - 7 = 66      Add 7 on both sides to get "a" by itself

a - 7 + 7 = 66 + 7

a = 73

6 0
4 years ago
The perimeter of a rectangular piece of plastic is 14 millimeters. The piece of plastic is 3 millimeters tall. How wide is it?
laiz [17]
It gives the perimeter of 14 mm and if it is 3 mm tall, times that by 2 to get 6 for the total of both side then subtract 6 from 14 and you get 8 and then divide that by 2

Answer is 4 mm wide for the two sides
7 0
3 years ago
20% more than 80 is ?
Diano4ka-milaya [45]

20% more than 80:

80 + 20% of 80

80 + 20/100 × 80

80 + 16

= 96

7 0
3 years ago
Darrin put the numbers 7.25, 7.52, and 5.72 and 5.27 in order from greatest to least.Is his work correct?Explain
aksik [14]
If the order of the numbers in the question are the order Darrin put theem in then no, his work is not correct. this is because 7.25 is not greater than 7.52. the real order should be 7.52,7.25, 5.72, 5.27
8 0
3 years ago
Read 2 more answers
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