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Feliz [49]3 years ago

5 0

Answer: $ 57.80

Step-by-step explanation:

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Find the opposite reciprocal in quesrions 13-15 13) 2 14) -3/4 15) 1/3

larisa86 [58]

13.) - 1/2
14.) 1 1/3 (4/3)
15.) - 3

6 0

3 years ago

HELP PLEAS DO IN 30 MIN

AveGali [126]

Answer:

n = -2/5

Step-by-step explanation:

n/8 - 7n/16 = 1/8

2n/16 - 7n/16 = 2/16 (making common denominators)

-5n/16 = 2/16 (Simplifying the equation)

-5n = 32/16 (Multiplying both sides by 16)

-5n = 2

n = -2/5

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-Chetan K

8 0

3 years ago

Read 2 more answers

In the expansion (ax+by)^7, the coefficients of the first two terms are 128 and -224, respectively. Find the values of a and b

madam [21]

Answer:

a = 2, b = 3.5

Step-by-step explanation:

Expanding $(ax+by)^7$ using Binomial expansion, we have that:

$(ax+by)^7$ =

$(ax)^7(by)^0 + (ax)^6(by)^1 + (ax)^5(by)^2 + (ax)^4(by)^3 + (ax)^3(by)^4 + (ax)^2(by)^5 + (ax)^1(by)^6 + (ax)^0(by)^7$

$= (a)^7(x)^7+ (a)^6(x)^6(b)(y) + (a)^5(x)^5(b)^2(y)^2 + (a)^4(x)^4(b)^3(y)^3 + (a)^3(x)^3(b)^4(y)^4 + (a)^2(x)^2(b)^5(y)^5 + (a)(x)(b)^6(y)^6 + (b)^7(y)^7\\\\\\= (a)^7(x)^7+ (a)^6(b)(x)^6(y) + (a)^5(b)^2(x)^5(y)^2 + (a)^4(b)^3(x)^4(y)^3 + (a)^3(b)^4(x)^3(y)^4 + (a)^2(b)^5(x)^2(y)^5 + (a)(b)^6(x)(y)^6 + (b)^7(y)^7$