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schepotkina [342]
3 years ago
7

1) Factorise the following polynomials: (i) 9 2 − 66 + 121 2

Mathematics
2 answers:
adoni [48]3 years ago
4 0

Answer:

(3y - 11z)2

Step-by-step explanation:

  1. have a good day
  2. stay safe
  3. have an awesome summer
  4. good luck next year
  5. :)
Nana76 [90]3 years ago
3 0

Answer:

IS IT 92 OR 9 squared

Step-by-step explanation:

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justin paid $1,185 in sales tax on her new car. The car cost $15,800 before taxes. What percent was the sales tax rate?
soldi70 [24.7K]

Answer:

The percentage is 7.5%

7 0
3 years ago
On any given day, the number of users, u, that access a certain website can be represented by the inequality 125-4530
Masteriza [31]

Answer:

Step-by-step explanation:

Our inequality is |125-u| ≤ 30. Let's separate this into two. Assuming that (125-u) is positive, we have 125-u ≤ 30, and if we assume that it's negative, we'd have -(125-u)≤30, or u-125≤30.

Therefore, we now have two inequalities to solve for:

125-u ≤ 30

u-125≤30

For the first one, we can subtract 125 and add u to both sides, resulting in

0 ≤ u-95, or 95≤u. Therefore, that is our first inequality.

The second one can be figured out by adding 125 to both sides, so u ≤ 155.

Remember that we took these two inequalities from an absolute value -- as a result, they BOTH must be true in order for the original inequality to be true. Therefore,

u ≥ 95

and

u ≤ 155

combine to be

95 ≤ u ≤ 155, or the 4th option

4 0
3 years ago
HELP HELP HELP HELP PLEASEEE
Sphinxa [80]

The valid probability distributions are the ones in options C and D.

<h3>Which of the following are valid probability distributions?</h3>

For discrete random variables with probabilities p₁, p₂, ..., pₙ, there are two rules:

  • All of these probabilities are numbers between 0 and 1.
  • p₁ + p₂ + ... + pₙ = 1.

So, for the first rule we can discard the first option, where we have negative probabilities.

To check the other 4 options, just add the probabilities and see if the addition gives 1.

The options that add up to 1 are C and D, so these two are the correct options.

D: 1/5 + 1/10 + 1/10 + 1/10 + 1/5 + 1/10 + 1/10 + 1/10 = 1

C: 1/6 + 1/6 + 1/6 + 1/6 + 1/6 + 1/6 = 1

If you want to learn more about probability:

brainly.com/question/25870256

#SPJ1

3 0
1 year ago
How can you write 23/3 as a mixed number?
Illusion [34]
23/3 = 7 2/3 <======
3 0
2 years ago
dawn bought a winter coat at 30% off the original price.the discount on the coat was 21$.what was the original price of the coat
matrenka [14]
The answer would be $30
7 0
3 years ago
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