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sukhopar [10]
3 years ago
7

Simplify(7x2 + 5) ( x – 3) + 2x( 3x – 4) MUST SHOW WORK

Mathematics
1 answer:
finlep [7]3 years ago
6 0

Answer:

11x + 6x^2 -57

Step-by-step explanation:

(7x2 + 5)(x - 3) + 2x (3x - 4)

1. Multiply 7x2

(14 + 5)(x - 3) + 2x (3x - 4)

2. Add 14+5

(19)(x - 3) + 2x (3x - 4)

3. Distribute 2x to 3x-4

(19)(x - 3) + 6x^2 - 8x

4. Distribute 19 to x-3

19x - 57 + 6x^2 - 8x

5. Simplify.

11x + 6x^2 -57

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Gambling at a slot machine is an example of which reinforcement schedule?
gogolik [260]

Answer:

d. Variable ratio

Step-by-step explanation:

We are asked to determine that gambling at a slot machine is an example of which reinforcement schedule.

Let us see our given choices one by one.

a. Fixed ratio

We know that in fixed ratio schedule, reinforcement is delivered after the completion of a number of responses. An example of fixed ratio is a reward to every 6th response.

b. Fixed interval

We know that in fixed interval schedule the first response is rewarded only after a specified amount of time has elapsed. An example of fixed interval schedule is weekly paycheck.

c. Variable interval

We know that in variable interval schedule, the reinforcement is delivered at changing and unpredictable intervals of time.

d. Variable ratio

In variable ratio schedule, a response is reinforced after an unpredictable number of responses. Gambling and lottery are examples of variable ratio.

Therefore, option 'd' is the correct choice.

8 0
2 years ago
Read the photo best answer will get brainliest
zloy xaker [14]

Answer:

Step-by-step explanation:

First of all it should be like fractions

So -2/3 becomes -10/15

and -3/5 becomes -9/15

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4 0
3 years ago
Read 2 more answers
A national charity contacted 100
Stels [109]

Answer:

c. The mean of all sample proportions of those who make a donation from all random samples of 100 people contacted by phone is 0.05.

Step-by-step explanation:

If this is the same question I had then this would be the correct answer, hope this helps!

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3 years ago
the expression 5n+2 can be used to find the total cost in dollars of bowling where n is the number of games bowled and 2 represe
tia_tia [17]
5(3) + 2
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Your answer is 17
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Question 2 of 10
Kruka [31]

Answer:

Step-by-step explanation:

Its A

im pretty sure yah!!

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