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Georgia [21]
3 years ago
8

How do you rewrite 1/27 as an expression with a negative exponent​

Mathematics
1 answer:
krek1111 [17]3 years ago
4 0

Answer:

3^-3

Step-by-step explanation:

27 = 3^3

so

1/ 27= 1 / 3^3 = 3^-3

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How many years will it take for $20,000 to earn $7,000 in interest if placed in an account that earns 2.09% simple interest?
aalyn [17]

Answer:

16.7 years

Step-by-step explanation:

7 0
2 years ago
Sue has $2.20 in dimes and nickels. If she has 13 more dimes than nickels, how many of each coin does she have?
dem82 [27]
10d+5n=220
divide both sides by 5
2d+n=44

d=13+n
sub 13+n for d in other equatin

2(13+n)+n=44
26+2n+n=44
26+3n=44
minus 26 both sides
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divide both sides by 3
n=6
sub back

d=13+n
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4 0
3 years ago
I really need help please !!!
lisov135 [29]

Answer:

15

Step-by-step explanation:

(whole secant) x (external part) = (tangent)^2

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Distribute

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Subtract 25 from each side

25-25 +5x = 100-25

5x= 75

Divide by 5

5x/5 = 75/5

x = 15

8 0
3 years ago
Find the exact value of tan 150° in simplest form with a rational<br> denominator.
Ainat [17]

Step-by-step explanation:

tan150°

= -tan30°

= -√3/3.

7 0
3 years ago
The quotient of 3 times a number and 7 is 15. Find the number<br> pls help me
Ronch [10]

Answer:

it would be 3 times 35 divded by 7 and that answer would give you 15 as the answer so 35 is your missing number

Step-by-step explanation:

4 0
3 years ago
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