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Points and brainlest help me out on my question !!

Answer:

what is

Step-by-step explanation:

The sample proportion of the teenagers 13 to 17 years of age who use social media​ is 0.236.

Sample proportion is defined as the proportion of something from a given sample which has a particular characteristic.

The formula to calculate the sample proportion is,

p = Number of successes in a particular sample / Sample size

Given that,

a random sample of n = 330 teenagers 13 to 17 years of age was asked if they use social media.

Sample size = 330

Of those surveyed, 252 stated that they do use social media.

We have to find the proportion of teenagers 13 to 17 years of age who use social media​.

Number of failures = 252

Number of successes = 330 - 252 = 78

Sample proportion = 78 / 330 = 0.236

Hence the sample proportion is 0.236.

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Answer:

Step-by-step explanation:

The odds for 4 heads = (1/2)^4 = 1/16..

So the odds against is 1 - 1/16 = 15/16.

The odd against the coin showing heads all four times if, A coin is tossed four times is 15 / 16.

The ratio of good outcomes to all possible outcomes of an event is known as probability. A lot of successful results for an experimental with 'n' results can be represented by the symbol x.

Given:

A coin is tossed four times,

Total outcomes = (head or tail) × 4 =  2 × 4 = 16

Total favorable outcomes = head = 1,

Calculate the probability of the coin showing a head all four times as shown below,

Probability = Total favorable outcomes / Total outcomes

Probability = 1 / 16

Calculate the odd against the coin showing heads all four times as shown below,

The odd against the coin showing heads all four times = 1 - The probability of the coin showing a head all four times

The odd against the coin showing heads all four times = 1 - 1 / 16

The odd against the coin showing heads all four times = 15 / 16.

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Answer:

30 full pages but you would have 13 stamps left

Step-by-step explanation:

Answer: 30 pages

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

3(2+1)

3(3)

9

that how i solved it

Answer:

A

Step-by-step explanation:

9/15 simplifies to 3/5, and : and / are the same, so the answer be 3:5, or A

Answer:

The y-coordinate of the point is approximately 2.42.

Step-by-step explanation:

From the figure attached below the statement we derive the following equation to calculate the y-coordinate ([tex]y[/tex]), dimensionless, of the point in terms of the x-coordinate ([tex]x[/tex]), dimensionless, and angle of the line ([tex]\theta[/tex]), measured in sexagesimal degrees:

[tex]y = x\cdot \tan \theta[/tex] (1)

If we know that [tex]x = 6[/tex] and [tex]\theta = 22^{\circ}[/tex], then the y-coordinate of the point is:

[tex]y = 6\cdot \tan 22^{\circ}[/tex]

[tex]y\approx 2.42[/tex]

The y-coordinate of the point is approximately 2.42.

Answer:

120

Step-by-step explanation:

18/100 x 600 = 108

estimate = round 18 to 20

20/100 x 600 = 120

Answer: D

Step-by-step explanation: Just simplify the whole expression. It’s all the same variable. 5x+10x= 15x. 15x+x=16x.

Answer:

x-intercept= (4.265,0)

y-intercept= (0,-534)

Step-by-step explanation:

Answer:

it's option 3, 1/10. Hope this helps

Answer:

The value  is  [tex]n = 384 [/tex]

The correct option is a

Step-by-step explanation:

From the question we are told that

   The margin of error is  E =  0.05

From the question we are told the confidence level is  95% , hence the level of significance is    

      [tex]\alpha = (100 - 95 ) \%[/tex]

=>   [tex]\alpha = 0.05[/tex]

Generally from the normal distribution table the critical value  of   is  

   [tex]Z_{\frac{\alpha }{2} } =  1.96[/tex]

Generally since the sample proportion is not given we will assume it to be

      [tex]\^ p = 0.5[/tex]

Generally the sample size is mathematically represented as  

    [tex]n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p ) [/tex]

=>   [tex]n = [\frac{ 1.96 }{0.05} ]^2 *0.5 (1 - 0.5) [/tex]

=>   [tex]n = 384 [/tex]

Generally the margin of error is mathematically represented as  

      [tex]E = Z_{\frac{\alpha }{2} } *  \frac{\sigma }{\sqrt{n} }[/tex]

Generally if the level of confidence increases,  the critical value of  [tex]\frac{\alpha }{2}[/tex]  increase and from the equation for margin of error we see the the critical  value varies directly with the margin of error , hence the margin of error  will increase also  

So  If the confidence level is increased, then the sample size would need to increase because a higher level of confidence increases the margin of error.

Answer:

A

Step-by-step explanation:

Answer:

Hi the answer would be 9,000 or nine thousand

Step-by-step explanation:

Hope this helps <3

Answer:

$8.28

Step-by-step explanation:

So, first we must find the price per ticket so we do

13.80/5 = 2.76

So the $2.76 per ticket

So now all we do to find the price of three tickets we times the price per ticket by 3

2.76 x 3 = $8.28

Answer:

50%

Step-by-step explanation:

Answer:

50%

Step-by-step explanation:

32 Divided by 2 equals 16

Answer:

C.

Step-by-step explanation:

The quadratic equation has two complex (nonreal) solutions option (B) is correct.

Any equation of the form [tex]\rm ax^2+bx+c=0[/tex]  where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

As we know, the formula for the roots of the quadratic equation is given by:

[tex]\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}[/tex]

We have a quadratic equation:

3x² + 4x = - 5

or

3x² + 4x + 5 = 0

D = b² - 4ac

b = 4, a = 3, c = 5

D = (4)² - 4(3)(5)

D = 16 - 60

D= -44

D < 0

Two complexes (nonreal) solutions

Thus, the quadratic equation has two complexes (nonreal) solutions option (B) is correct.

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Answer:

$0.75

Step-by-step explanation:

$3.45 ÷ 34 lb. = $0.10 per pound (rounded)

$0.10 x 7.5 = $0.75

It would cost $0.75 to buy 7.5 lbs of chopped walnuts

I'm sorry if wrong! You are loved and you are beautiful/handsome!

-Bee

bro my teacher be making us do questions and when i search them up they arent answered like tfk ughhh

Answer:

Congurent triangles are those which map onto them selves perfectly. This means they share the same angle measurements and side lengths. Therefor we can figure out the side lengths by using the information in both triangles.

AD=5x+11

in the congurent triangle, the corresponding side equals:

CM=7x-3

CM and AD are congurent triangles meaning their sidelengths equal the same. Therefore...

5x+11=7x-3

Now we just solve to find the length of AD and CM (equal lengths)

5x+11=7x-3

11=2x-3

14=2x

7=x

x=7

If x=7 then we can plug it in for AD to find the side length.

5(7)+11=46

Notice that CM equals the same 7(7)-3=46

This is because... they are congruent triangles.

These rules also apply for all angle measurements of congruent triangles:

The m<v is equal to the meaasure of E (corresponding angles in congrurent triangles are equal)

We already astablished what x was (x=7) meaning if we find the measure of E then we have the measure of V sicne they are corresponding angles in a congrurent triangle.

(6x7+1)=43°

therefore the m<v is equal to 43°

46 and 43° is your answer

Step-by-step explanation:

W is the time Woody family used sprinkler.

C is the time Carter family used sprinkler.

Time used total: 50 hours.

W+C = 50                                 (1)

Total water used is 1900 L.

Woody family used: 40W;

Carter family used 35C.

Equation showing how much water both families used:

40W + 35 C =1900.                   (2)

We have a system with two equations and two variables. We can use substitution method to solve the system. From equation (1) we express W:

W=50 - C.                                              (1a)

We substitute the variable in equation (2):

40(50 - C) +35C =1900.

We open the parenthesis

2000 -40C +35C =1900,

We combine like terms

2000 -5C =1900,

We subtract 2000 from both sides of the equation

-5C = 1900 - 2000,

We simplify

-5C = -100,

We divide by -5

C = 20.

We substitute the values of C in the equation (1a) and find the value of W:

W = 50 - C,

W = 50 -20 =30.

The Woody family used water for 30 hours and the Carter family used water for 20 hours.

We check our work to be sure we did not make any mistakes:

Total water used:

40 x 30 + 35 x 20 = 1200 + 700 = 1900 L.

Answer

r=10

Step-by-step explanation:

9514 1404 393

Answer:

  $7,358

Step-by-step explanation:

Assuming the interest is compounded annually, the amortization formula is useful here.

  A = Pr/(1 -(1+r)^-t)

A is the annual scholarship, P is the principal invested at rate r for t years.

  A = $100,000(0.04)/(1 -1.04^-20) = $7,358.18

The university could give $7,358 in scholarships each year.

Answer:

28 – 16 ÷ 8 – 4382224 = -4382198

Step-by-step explanation:

Answer:

Step-by-step explanation:

Simplifying

28 + 12x = 8x + -4

Reorder the terms:

28 + 12x = -4 + 8x

Solving

28 + 12x = -4 + 8x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-8x' to each side of the equation.

28 + 12x + -8x = -4 + 8x + -8x

Combine like terms: 12x + -8x = 4x

28 + 4x = -4 + 8x + -8x

Combine like terms: 8x + -8x = 0

28 + 4x = -4 + 0

28 + 4x = -4

Add '-28' to each side of the equation.

28 + -28 + 4x = -4 + -28

Combine like terms: 28 + -28 = 0

0 + 4x = -4 + -28

4x = -4 + -28

Combine like terms: -4 + -28 = -32

4x = -32

Divide each side by '4'.

x = -8

Simplifying

x = -8

Answer:

have one what ?

Step-by-step explanation:

also thats cute. when i was in sixth grade, i was homeschooled.

Answer

Ok good luck in school!

Answer: The answer would be B -2

Step-by-step explanation:It is B because if you put -1 in the equation then that would mean -3 * -2 would be 6 and then you would add 2 which would mean that 6 + 2 would give you the answer of 8 so therefore your answer is B. -2

Answer:

True because Plants need Carbon Air to grow. Seashells are made of tiny carbon atoms, Wood is 50% carbon and water is H20 known as Hydrogen and Oxygen. Water DOES have some Carbon in it! It gets the Carbon Dioxide from the rain!