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Sedaia [141]
2 years ago
12

Given that ​3x^2-3x+2 find each of the following. ​a) ​g(0) ​b) ​g(​) ​c) ​g(​) ​d) ​g(​x) ​e) ​g(1​t)

Mathematics
1 answer:
shepuryov [24]2 years ago
7 0

The resulting values and function are 2, 8, 20, 3x^2+3x + 2 and 3t^2-9t+8

<h3>Functions and values</h3>

Given the following equation expressed as;

f(x) = 3x^2-3x+2

We are to find the following function;

a) g(0) = 3(0)^2-3(0) + 2

g(0) = 2

b) g(-1) = 3(-1)^2-3(-1) + 2

g(-1) = 3+3+2
g(-1) = 8

c) g(3)= 3(3)^2-3(3) + 2

g(3) = 27-9+2
g(3) = 20

d) g(-x) = 3(-x)^2-3(-x) +2

g(-x) = 3x^2+3x + 2

e) g(1-t) = 3(1-t)^2-3(1-t) + 2

g(1-t) = 3(1-2t+t^2)-3t+3 + 2

g(1-t) = 3-6t+3t^2-3t+5

g(1-t) = 3t^2-9t+8

Hence the resulting values and function are 2, 8, 20, 3x^2+3x + 2 and 3t^2-9t+8

Learn more on functions and values here; brainly.com/question/6561461

#SPJ1

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In a mixture of​ concrete, there are fourfour lb of cement mix for each pound of gravel. If the mixture contains a total of 2952
Anton [14]

Answer: there are 59059 lbs of gravel.

Step-by-step explanation:

In a mixture of​ concrete, there are four lbs of cement mix for each pound of gravel. This means that eight lbs of cement would be mixed for 2 pounds of gravel and 12 lbs of cement would be mixed for 3 pounds of gravel and 12. Therefore, the constant ratio of cement to gravel is 4:1

The total ratio is 4 + 1 = 5

If the mixture contains a total of 295295 lb of these two​ ingredients, then the number of pounds of gravel that are​ there is

1/5 × 295295 = 59059 lbs

3 0
3 years ago
Is (-4, 2) a solution of 4x + 5y &lt; -7?
cupoosta [38]

Answer:

No

Step-by-step explanation:

Substitute the coordinates of the point into the left side of the inequality, evaluate and compare.

4(- 4) + 5(2) = - 16 + 10 = - 6 > - 7

Thus (- 4, 2 ) is not a solution

4 0
3 years ago
if in the study of the lifetime of 60-watt light bulbs it was desired to have a margin of error no larger than 6 hours with 99%
Dahasolnce [82]

The question is incomplete! Complete question along with answer and step by step explanation is provided below.

Question:

The lifetime (in hours) of a 60-watt light bulb is a random variable that has a Normal distribution with σ = 30 hours. A random sample of 25 bulbs put on test produced a sample mean lifetime of = 1038 hours.

If in the study of the lifetime of 60-watt light bulbs it was desired to have a margin of error no larger than 6 hours with 99% confidence, how many randomly selected 60-watt light bulbs should be tested to achieve this result?

Given Information:

standard deviation = σ = 30 hours

confidence level = 99%

Margin of error = 6 hours

Required Information:

sample size = n = ?

Answer:

sample size = n ≈ 165

Step-by-step explanation:

We know that margin of error is given by

Margin of error = z*(σ/√n)

Where z is the corresponding confidence level score, σ is the standard deviation and n is the sample size

√n = z*σ/Margin of error

squaring both sides

n = (z*σ/Margin of error)²

For 99% confidence level the z-score is 2.576

n = (2.576*30/6)²

n = 164.73

since number of bulbs cannot be in fraction so rounding off yields

n ≈ 165

Therefore, a sample size of 165 bulbs is needed to ensure a margin of error not greater than 6 hours.

3 0
3 years ago
no links PLEASE HELP DUE IN 10 MINUTES you can use a calculator if you want. No links please help this is very important i will
Debora [2.8K]

Answer:

0.334

Step-by-step explanation:

Basically to show reasoning: 16*215= 3340

4 decimal places, so you would move it four decimal places from 3340.

Which equals to: 0.334

Hope this helped! :)

6 0
3 years ago
Susie is having a party with 15 guests. she wants to feed everyong sandwhiches.if susie buys 7 1/2 pounds of meat, how much meat
padilas [110]
Take 7.5 and divide by 15.
7.5/15=.5
each guest will get .50 pound of meat.
4 0
3 years ago
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