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Afina-wow [57]
3 years ago
10

F(x) = 3x^2 - 7 4x^2 – 3 Find f(2)​

Mathematics
1 answer:
Reil [10]3 years ago
5 0

Answer:

f=5/8x^2+-3/2Divide both sides by two

Step-by-step explanation:

Hope that helped

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A researcher believes that 12% of a simple random sample of adults will be able to identify a Toyota Scion by brand and model na
DochEvi [55]

Answer: 650

Step-by-step explanation:

When prior estimate of population proportion is known , then the formula to find the required sample size is given by :-

n=p(1-p)(\dfrac{z^*}{E})^2

, where p= population proportion

E= margin of error

z* = Critical value.

Let p be the proportion of adults able to identify a Toyota Scion by brand and model name.

As per given , we have

p = 12%= 0.12

E= 2.5%=0.025

Critical value for 95% confidence interval : z* = 1.960  [By z-table ]

Then, the required sample size = n=(0.12)(1-(0.12))(\dfrac{1.96}{0.025})^2

n=(0.1056)(78.4)^2

n=(0.1056)(6146.56)

n=649.076736\approx650

Thus , the required sample size = 650

6 0
3 years ago
What 2 decimal place number lies between 4.174 and 4.189 ?
allochka39001 [22]

Answer:

41.74 and 41.89

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
You and your friend are in a canoe race. Your friend is a half mile in front of you and paddling 3 miles per hour. You are paddl
julsineya [31]
Let the time that you caught up with your friend be t, then
8.5 - 3.4t = 8 - 3t
3.4t - 3t = 8.5 - 8
0.4t = 0.5
t = 0.5/0.4 = 1.25
therefore, you will catch up with your friend after 1.25 hours.

b.) time it will take you to cross the finnish line = 8.5/3.4 = 2.5 hours
After 2.5 hours, distance covered by your friend = 3 x 2.5 = 7.5 miles
Therefore, when you cross the finish line, you are 8 - 7.5 = 0.5 miles ahead of your friend.
7 0
3 years ago
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Lisa’s scores for 3 video games were 245, 672, and 437. What would she have to score in the next game to tie her friend Anne’s a
Delicious77 [7]

Answer:

398

Step-by-step explanation:

She will have to score exactly 398 to tie the score with Anne

5 0
3 years ago
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Anyone know how to simplify a whole number into a mixed number or a improper fraction???
AlekseyPX

Answer:

Example any whole number over one would be an improper fraction, so 2=2/1, something like 5/3=1 2/3 would be a mixed number, subtract the numerator by the denominator, how ever many times you can subtract is the whole number and the amount remaining is the numerator, keep the same denominator,,, hope that makes sense

Step-by-step explanation:

3 0
2 years ago
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