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Tju [1.3M]
3 years ago
5

Expand (2x-5y)⁷ and find fourth form​

Mathematics
1 answer:
elena55 [62]3 years ago
3 0

Step-by-step explanation:

By binomial theorem,

T(r+1) = nCr * a^(r+1) * b^r

Term 4 = 7C3 * (2x)^4 * (-5y)^3 = 35 * (16x^4) * (-125y^3) = -70000x^4y^3.

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5 0
3 years ago
What are the four answers?
Neko [114]

Answer:

CLAE

Step-by-step explanation:

1=43

2=28

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8 0
3 years ago
Andy has 310 in his account. Each week w he withdraws 30 for his expences which expression could be used if he wanted to find ou
Butoxors [25]
310-30x=y
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3 0
3 years ago
Heeeeeeelp pleeeease
Umnica [9.8K]

Answer:

<em>Solve for  b.  by simplifying both sides of the inequality, then isolating the variable.</em>

Inequality Form:

b < -\frac{3}{7}

Interval Notation:

( − ∞ , -\frac{3}{7} )

Hope this helps :)

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8 0
3 years ago
Baker, Inc. uses the sum-of-the-years’-digits method to depreciate a $79,600.00 piece of equipment that has an estimated life of
Anastasy [175]

The book value at the end of year 2 of the equipment depreciated using the sum-of-the-years’-digits method is $65,560.

<h3>What is the book value at the end of  year 2? </h3>

Depreciation is a method used to expense the cost of an asset. Book value is the cost of the asset less the accumulated depreciation.

Sum-of-the-year digits = (remaining useful life / sum of the years ) x  (Cost of asset - Salvage value)

Depreciation expense in year 1:

Sum of the years = 1 +2 +3 +4 + 5 + 6 + 7 + 8 + 9 + 10+ 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 = 210

Undepreciated life of the asset = 20

(20 / 210) x ($79,600 - 4,000) = 7200

Depreciation expense in year 2:

19 / 210 x ($79,600 - 4,000) = 6840

Book value = 79600 - 7200 - 6840 = $65,560

To learn more about depreciation, please check: brainly.com/question/25552427

5 0
2 years ago
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