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Kipish [7]
3 years ago
8

Which expression is equivalent to 73 ⋅ 7−5? 72 77 1 over 7 to the 2nd power 1 over 7 to the 7th power

Mathematics
2 answers:
Rasek [7]3 years ago
7 0

Answer:

  1/7^2

Step-by-step explanation:

The applicable rules of exponents are ...

  (a^b)(a^c) = a^(b+c)

  a^-b = 1/a^b

__

Then your expression simplifies to ...

  7^3\cdot 7^{-5}=7^{3-5}=7^{-2}=\boxed{\dfrac{1}{7^2}}

soldier1979 [14.2K]3 years ago
6 0

Answer:

The answer is 1/7^2

Step-by-step explanation:

I took the test lol

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Citrus2011 [14]

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5 0
3 years ago
What is an equation of the line that passes through the points (4,3) and (7,3)​
Vika [28.1K]

Answer:

y = 3

Step-by-step explanation:

find out the slope

m = (3-3)/(4-7)

m = 0

so the line is horizontal

passing through the point (x,3)

x can be any value

so the equation is

y = 3

6 0
3 years ago
Suppose the band sells erasers for $2 per package and pencils for $5 per package. The band sells 220 packages in all and earns a
garik1379 [7]
Let e=erasers and p=pencils. So we know the total amount of erasers plus pencils sold is equal to 220. Therefore,

e + p = 220
We also know the cost of erasers and pencils totaled to $695 in earnings and so:

2e + 5p = 695
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5 0
3 years ago
If BCD ~ GEF, find BD​
Masja [62]

Answer:

19

Step-by-step explanation:

if the triangles are similar then EG/BC = FG/BD

51/(x+4) = 57/(2x-7) cross multiply expressions

102x - 357 = 57x + 228

102x - 57x = 228 + 357

45x = 585 divide both sides by 45

x = 13

BD = 2x -7 and 13×2 - 7 = 19

4 0
3 years ago
Read 2 more answers
Julie works for 48 hours per week for 12 weeks during the summer, making $5000. If she works for 48 weeks during the school year
spayn [35]
She would need to work 12 hours per week. 
7 0
3 years ago
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