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3 years ago

HELP PLS ILL GIVE BRAINLIEST ANSWER HELP ASAP!!

Mathematics

1 answer:

AlexFokin [52]3 years ago

5 0

The answer is C

Hope this helped:)

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If a population consisted of 1000 people, a sample of the population could

Levart [38]

Answer: 100

Step-by-step explanation: 10%

3 0

3 years ago

B. Determine the values of a and b so that f is continuous.<br><br> Please help!

wlad13 [49]

Answer:

following are the solution to this question:

Step-by-step explanation:

Please find the complete question in the attached file.

$\lim_{x\to 2}+f(x) = \lim_{x\to 2}+ (ax^2-bx+3) = 4a-2b+3\\\\ \to 4a-2b+3 = 4\\\\ \therefore \ \ 4a-2b = 1\\\\$

The one-sided limits of F(x) at x = 3 must be equivalent for f(x) to be continuous at x = 3.

$\to \lim_{x\to 3}- f(x) = \lim_{x\to 3}- (ax^2-bx+3) = 9a-3b+3\\\\ \to \lim_{x\to 3}+ f(x) = \lim_{x\to 3}+ (2x-a+b) = 6-a+b\\\\$

So,

$\to 9a-3b+3 = 6-a+b\\\\\therefore\\ \to 10a -4b = 3$

$\to 4a - 2b = 1......(a)\\\to 10a - 4b = 3.......(b)\\$

In equation a multiply the by -2 and then add in the equation b:

$\to -8a + 4b = -2\\\to 10a - 4b = 3\\ \to 2a = 1\\\\ \to a = \frac{1}{2}\\\\ \to \ 4(\frac{1}{2}) - 2b = 1\\\\ \to 2 - 2b = 1\\\\ \to -2b = -1\\\\ \to b = \frac{1}{2}$

So, the value of $a \ and \ b= \frac{1}{2}$

4 0

2 years ago

3.<br><br> What is the value of a + bc when a = 7, b = 4, and c = 1/2

Brums [2.3K]

Answer:

Step-by-step explanation:

Replace a by 7

and

b by 4

and

c by 1/2

7+4(1/2)

7+2=9

3 0

2 years ago

I need help guys please help me !

Arisa [49]

S=49p+7*9p=(49+63)p=112P
answer is B

6 0

3 years ago

The mean temperature for the first 4 days in january was 1°C. The mean temperature of the first 5 days in January was 2°C. What

Lorico [155]

Answer:

Step-by-step explanation:

mean is average, so if we label the first through fifth days of january a-e we can solve it.

So average of the first four is (a+b+c+d)/4 = 1 and the first five is (a+b+c+d+e)/5 = 2. Since it's easy, let's get rid of the fraction in both.

(a+b+c+d)/4 = 1 and (a+b+c+d+e)/5 = 2

a+b+c+d = 4 and a+b+c+d+e = 10

Now, we know a+b+c+d is 4, so we can replace that in the second equation

a+b+c+d+e = 10

4 + e = 10

e = 6

ad since e is the fifth day, we know the temperature of it. Let me know if something here didn't make sense.

4 0

2 years ago

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