() = 2 + 4 and () = 2^x2x + 4?

Answers

Answer 1

Answer: closed interval represented by [a, b] consists of all real numbers x such that a < x < b. An open ... 2 < x < 5 would have the interval notation [2, 5). x > 7 would have the ... 0. 7. 0 < x < 7. [0, 7]. 4) (. ] ... The domain would be: ).,2()2,2()2,

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55% of what number is 231

Answers

231=100%
2) x=55% that it

55% = 55/100
let 'what number' be x

55% of what number = (55/100) * X which is 231 or

(55/100) * X = 231
x = 231 *(100/55)

Help please!!! :((((((

Answers

Answer: 2000

Step-by-step explanation:

They started counting the population after the year 2000 meaning that in 2000 they had an initial count .

What is the factor of 16^2-81

Answers

this is the diffiarence of two perfect squares. this should be memorised, but if not here it is

a^2-b^2=(a-b)(a+b)
so 16^2-81=16^2-9^2
so the answer is (16-9)(16+9)

A store purchased a DVD for $12 and sold it to a costumer for 50% more than the purchase price. The customer was charged a 7% sales tax when the DVD was sold. What was the customer's total cost for the DVD

Answers

Answer:

The Customer's total cost for DVD was $19.26

Step-by-step explanation:

Given:

Purchase price of DVD = $12

Sold amount = 50% more than purchase amount.

So we will first calculate the amount at which the DVD was sold.

Selling Price of DVD = $(50)/(100)*12 +12 =6 +12 = \$18$

Sales tax imposed = 7%

So we will find the amount charged in Sales tax.

The amount charged in Sales tax can be calculated by multiplying sales tax percent with Selling Price of DVD and then dividing by 100.

framing in equation form we get;

The amount charged in Sales tax = $(7)/(100) * 18 = \$1.26$

Now we need to find the Total cost for DVD.

Total cost for DVD is equal to sum of the amount at which the DVD was sold and the amount charged in sales tax.

framing in equation form we get;

Total cost for DVD = $\$18 + \$1.26 = \$19.26$

Hence The Customer's total cost for DVD was $19.26

The factorization of 8x3 – 125 is (2x – 5)(jx2 + kx + 25). What are the values of j and k?

Answers

If you would like to find the values of j and k, you can do this using the following steps:

8x^3 - 125 = (2x - 5) * (jx^2 + kx + 25)
8x^3 - 125 = 2jx^3 + 2kx^2 + 50x - 5jx^2 - 5kx - 125

8x^3 = 2jx^3
4x^3 = jx^3
j = 4

2kx^2 + 50x - 5jx^2 - 5kx = 0
2kx^2 + 50x - 20x^2 - 5kx = 0
2kx^2 - 20x^2 + 50x - 5kx = 0
2kx - 20x + 50 - 5k = 0
2x(k - 10) = 5k - 50
2x(k - 10) = 5(k - 10)
k = 10

The correct result would be: j = 4 and k = 10.

Answer:

j=4 k=10 on edg ;)

Step-by-step explanation:

A storeowner applies a 15% markup to a lamp costing $159. What is the retail price of the lamp

Answers

182.85 is the answer.
159 * .15 = 23.28
23.4+159=182.85

Answer:

182.85

Step-by-step explanation:

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