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balu736 [363]
3 years ago
5

I’m now sure how to work this out... my teacher had shown us this today at the end of class.

Mathematics
1 answer:
Kipish [7]3 years ago
4 0
That's "5 to the negative seventh power," and is equal to

      1            1
---------- = --------- .  I would accept "1/(5^7)" as correct.
    5^7       78125
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What <br> arithmetic sequence with a_{4}=18 and a_{10}=48
nignag [31]

Answer:

a_{n} = 5n - 2

Step-by-step explanation:

the nth term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

given a₄ = 18 and a₁₀ = 48 , then

a₁ + 3d = 18 → (1)

a₁ + 9d = 48 → (2)

subtract (1) from (2) term by term to eliminate a₁

6d = 30 ( divide both sides by 6 )

d = 5

substitute d = 5 into (1) and solve for a₁

a₁ + 3(5) = 18

a₁ + 15 = 18 ( subtract 15 from both sides )

a₁ = 3

Then

a_{n} = 3 + 5(n - 1) = 3 + 5n - 5 = 5n - 2

3 0
2 years ago
A man jogs from his home to the nearst market 25km away jogs at an average speed 5km 1h. how long does it taken him to reach the
mr_godi [17]

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1/5

Step-by-step explanation:

first write the formula of average speed

  • 2) then equate the values of given question
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8 0
2 years ago
What partial products are shown by the model below
alina1380 [7]
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6 0
3 years ago
Read 2 more answers
Which of the following formulas, when evaluated using rational values for the variables, will result in an irrational number?
Lerok [7]

Answer:

a) The formula for the area of a circle  

Step-by-step explanation:

The formula for the area of a circle is  

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b) is wrong. A = ½(a + b)h.  

c) is wrong. A = ½bh.

d) is wrong. A = bh.

All measurements are rational numbers, so the areas will be rational numbers.

8 0
3 years ago
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Volgvan
The correct answer is 12
6 0
3 years ago
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