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3 years ago

What is the solution to -a(x) - 20 = -14

Mathematics

1 answer:

yanalaym [24]3 years ago

4 0

Answer:

solve for a: -(6/x)

solve for x: -(6/a)

Step-by-step explanation:

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An item is priced at $14.64. if the sales tax is 7% what does the item cost including sales tax?

Hitman42 [59]

7% of 14.64 is 1.02 est.

14.64 + 1.02
= 15.66

7 0

3 years ago

Read 2 more answers

Using the pattern, give the coefficients of (x + y)^5 and (x + y)^6

musickatia [10]

Answer:

$(x+y)^5=x^5+5x^4y+10x^3y^2+10x^2y^3+5xy^4+y^5$

$(x+y)^6=x^6+6x^5y+15x^4y^2+20x^3y^3+15x^2y^4+6xy^5+y^6$

Step-by-step explanation:

In order to find the values of $(x+y)^5$ and $(x+y)^6$ , you need to apply the binomial theorem (high-level math you most likely don't need to worry about, it's easier than multiplying all the binomials together).

$(x+y)^5$ = $\sum _{i=0}^5\binom{5}{i}x^{\left(5-i\right)}y^i$ = $\frac{5!}{0!\left(5-0\right)!}x^5y^0+\frac{5!}{1!\left(5-1\right)!}x^4y^1+\frac{5!}{2!\left(5-2\right)!}x^3y^2+\frac{5!}{3!\left(5-3\right)!}x^2y^3+\frac{5!}{4!\left(5-4\right)!}x^1y^4+\frac{5!}{5!\left(5-5\right)!}x^0y^5$ = $x^5+5x^4y+10x^3y^2+10x^2y^3+5xy^4+y^5$ .

$(x+y)^6$ = $\sum _{i=0}^6\binom{6}{i}x^{\left(6-i\right)}y^i$ = $\frac{6!}{0!\left(6-0\right)!}x^6y^0+\frac{6!}{1!\left(6-1\right)!}x^5y^1+\frac{6!}{2!\left(6-2\right)!}x^4y^2+\frac{6!}{3!\left(6-3\right)!}x^3y^3+\frac{6!}{4!\left(6-4\right)!}x^2y^4+\frac{6!}{5!\left(6-5\right)!}x^1y^5+\frac{6!}{6!\left(6-6\right)!}x^0y^6$ = $x^6+6x^5y+15x^4y^2+20x^3y^3+15x^2y^4+6xy^5+y^6$ .

5 0

3 years ago

It takes 4 pounds of grapes to make 1 pound of raisins. How many pounds of grapes would you need to make 3000 pounds of raisins?

ryzh [129]

4:1
(grapes);(rasins)

4:1
x:3000
so you then cross multiply
1·x=4·3000
multiply,
x=12000

so the answer is it takes 12000 pounds of grapes to make 3000 pounds of raisins

5 0

3 years ago

PLEASE HELP

jek_recluse [69]

I need points bro, so imma just type this rq cuz I’m mid test thank u tho

8 0

3 years ago

The price of a book is $19.75. If a customer has a coupon that allows her to save $4.50 on the price of the book, how much will

serious [3.7K]

For this case we have that the original price of the book is given by:

$ 19.75

The customer has a coupon to save part of the price of the book.

Therefore, the customer will pay

$19.75 - x$

Where,

x: value of the customer coupon.

We know that the customer has a coupon that has a value of $ 4.50.

Substituting values we have:

$19.75 - 4.50 = 15.25$

Answer:

she will pay for the book 15.25 $

7 0

3 years ago