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4 years ago

How to solve f(x)=3x^2+12x+11

1 answer:

3 0

Plug it into the quadratic formula (you'll get two answers):
1. -12+-√12^2-4(3)(11)
   _________________
   2(3)

2. -12+-√12
   ________
      6

3. -12+√12 and -12-√12
    _______    _______
      6 6

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Solve <br> 13=d÷6<br><br> .Plz answer ASAP

maw [93]

Hi love...

The correct answer after solving for d is D=78. That’s a quick answer, but I can give you steps on how to solve.

1. Simplify both sides of the equation

2. Isolate the variable

3. Simplify

Then you’d have the answer!

Please let me know if you need further assistance! Have a jolly evening.
~Brooke❤️

7 0

3 years ago

In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that 8% of the people in this sample had pinworm b

kow [346]

Answer: a) 453 b) 1537

Step-by-step explanation:

As per given , we have

Margin of error : E= 0.025

Critical value for 95% confidence interval : $z_{\alpha/2}=1.96$

a) The prior estimate of population proportion : p=0.08

Required sample size :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.08(1-0.08)(\dfrac{1.96}{0.025})^2\\\\=452.386816\approx453$

The minimum sample size is 453 U.S. adults.

b) Since the prior estimate of population proportion is not available , so we take p= 0.5

Required sample size :-

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.25(\dfrac{1.96}{0.025})^2\\\\=1536.64\approx1537$

The minimum sample size is 1537 U.S. adults.

5 0

4 years ago

Is this alternate interior angles converse?

zaharov [31]

Answer:

yes DUH

Step-by-step explanation:

7 0

3 years ago

Find the missing numbers

ipn [44]

Answer:

10, 13, 3, 12, 2.

Step-by-step explanation:

The numbers are written down alphabetically as they are spelled. For example 6 would be S, 10 would T, 3 would also be T and etc.

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4 years ago

HELP ME PLS I DONT HAVE TIME

chubhunter [2.5K]

Answer:

A is true.......................b is false....................and c is false

Step-by-step explanation:

6 0

3 years ago