Trig Functions, Help

Answer:

2.7>217/100

Step-by-step explanation:

Answer:

Hello! answer: 13

Step-by-step explanation:

-4 × 13 = 52 therefore a = 13 HOPE THAT HELPS!

Answer:

a = 13

Step-by-step explanation:

u need to solve for a so get it on one side by itself and do that by dividing both sides by -4

-4a= 52

−4a÷ -4= a

52 ÷ -4 = -13

a= 13

Answer:

[tex]\huge\boxed{\sf 90\ degrees}[/tex]

Step-by-step explanation:

P is the center of the circle

Chord RL passes through the center of the circle. Hence it is the diameter of the circle.

According to Thales's Theorem: (The angle opposite to the diameter is 90 degrees when a triangle is drawn in that semi-circle)

=> m∠REL = 90°

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

[tex]Pr = \frac{3}{36}[/tex]

Step-by-step explanation:

Given

2 number die

Required

P(Sum = 4)

The sample space of 2 die is:

[tex]S = \{(1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6), (2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6)[/tex]

[tex](3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6), (4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6)[/tex]

[tex](5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6), (6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6)[/tex]

[tex]n(S)= 36[/tex]

The pairs that adds up to 4 are:

[tex]Sum(4) = \{(1,3), (2,2),(3,1)\}[/tex]

[tex]n(Sum) =3[/tex]

So, the probability is:

[tex]Pr = \frac{n(Sum)}{n(S)}[/tex]

[tex]Pr = \frac{3}{36}[/tex]

Answer:

B. {2, 4, 6, 8}

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\text{7.06}\times\large\text{1,000 - 1,976}\div\large\text{100}\\\large\text{7.06}\times\large\text{1,000 = \boxed{\bf 7,060}}\\\large\text{7,060 - 1,976}\div\large\text{100}\\\large\text{1,976}\div\large\text{100 = 494}\div\large\text{25 = \boxed{\bf 19.76}}\\\large\text{7,060 - 19.76}\\\mathsf{= \boxed{\bf \ Answer: \dfrac{17,6006}{25}\ or\ 7,040.24}}\leftarrow\large\text{either of those choices should}\\\large\text{work because they are both equivalent to each other }[/tex]

[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

7,    7,    7,    7.5,    7.5,    14,    20,    10

Step-by-step explanation:

           Since the median has to be 7.5, you know that the 4th and 5th numbers have to average out to 7.5. In simpler terms, the two numbers have to add up to 15 so that when you divide them by 2, you get 7.5. Then you know that the mode is 7. So, the magority of the numbers have to be 7. This is why I made the first 3 numbers 7. Then you know that the mean is 10, so all the numbers have to add up to 80. So, if you add up the numbers you have so far you get 36. This means that the remaning numbers have to add up to 44. Here you can really choose any numbers you want, as long as they add up to 44. That is why I chose, 14, 20, and 10. Lastly to check the numbers you put in, find the mean, median and mode. If they all match up with median: 7.5,  mean: 10, and mode: 7, then your numbers work! Hope that helps!  

✌

One possible data set can be -

8, 7, 8, 7, 8, 7, 15, 7, 13

We have the following statistics for weights of eight puppies -

Mean: 10

Median: 7.5

Mode: 7

We have to list the set of possible weights for eight puppies.

The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.

The median is the middle value when a data set is ordered from least to greatest.

The mode is the number that occurs most often in a data set.

According to the question, we have -

Number of puppies = 8

Mean = 10

Median = 7.5

Mode =7

Assume the sum of weights of all puppies be x. Therefore -

[tex]$\frac{x}{8} = 10[/tex]

x = 80

Now -

Mode = 7 → This means that the number 7 has occurred the most in the set.

Median = 7.5 → This means that 7 is the middle value when a data set is ordered from least to greatest. The data set can be -

8, 7, 8, 7, 8, 7, 15, 7, 13

Hence, one possible data set can be -

8, 7, 8, 7, 8, 7, 15, 7, 13

To solve more questions on statistics, visit the link below-

https://brainly.com/question/12730221

#SPJ2

Answer:

the required sample size is 62

Step-by-step explanation:

Given the data in the question;

Confidence interval C = 95% = 0.95

Margin of error E = 10

population standard deviation σ = 40

sample size n = ?

We use the following formula to get our sample size;

sample size n = ( ( [tex]Z_c[/tex] × σ ) / E )²

Next we find z value for confidence interval

Confidence interval C = 95% = 0.95

Area = ( 1 + c )/2 = ( 1 + 0.95)/2 = 1.95 / 2 = 0.975

Now we check our z-table to see the area where 0.975 falls;

It falls under column 0.06 and Row 1.9

so, our z-value for confidence interval of 0.95 is 1.96

so we substitute

sample size n = ( ( 1.96 × 40 ) / 10 )²

n = ( 78.4 / 10 )²

n = ( 7.84 )²

n = 61.4656

we know that sample size is always rounded up, so

n = 62

Therefore, the required sample size is 62

Answer:

tbh i may be too late but the answer is 6

Step-by-step explanation:

the ratio 5:7 in the question is basically saying for every 5 boys are 7 girls

if you multiply the number of boys by 5 ( which would equal 15) you would have 21 girls, 15 + 21 equals 36.  21- 15= 6 giving us the anser

Answer:

ez the answer is 360000000

Step-by-step explanation:

Answer:

the answer is 360000000

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

360cm²

Step-by-step explanation:

If the formula in the question is correct (S.A. = 40r²) then you just have to change r for r value:

40 * 3² = 40 * 9 = 360cm²

Hope it helps .

The solution is:

43100 ≤ μ ≤ 59710

And for this case we want to test the following hypothesis:

Null hypothesis:  μ = 42000

Alternative hypothesis: µ ≠ 42,000

For this case since the lower value of the confidence interval is higher than 42000 we have enough evidence to reject the null hypothesis at the 55 of significance and we can conclude that the true mean is significantly different from 42000

A confidence interval is a range of values, derived from a sample of data, that is likely to contain an unknown population parameter with a certain level of confidence.

here, we have,

The confidence interval for the mean is given by the following formula:

  (1) X± t_α/2* s/√n

And for this case the 95% confidence interval is already calculated as:

43100 ≤ μ ≤ 59710

And for this case we want to test the following hypothesis:

Null hypothesis: μ = 42000

Alternative hypothesis: µ ≠ 42,000

For this case since the lower value of the confidence interval is higher than 42000 we have enough evidence to reject the null hypothesis at the 55 of significance and we can conclude that the true mean is significantly different from 42000.

To learn more about the confidence interval, visit:

brainly.com/question/17097944

#SPJ3

Answer:

6

Step-by-step explanation:

you're overthinking the problem, all you have to do is multiply 8 and (3/4) to get 6, super easy

Answer:

Step-by-step explanation:

You have to be very careful how you put that into your calculator. You need        brackets.

2nd function

sin-1

(

3

y^x or x^y or ^

.5

down arrow (if needed)

divide

2

)

= You should get 60

Answer:

39560

Step-by-step explanation:

9890+ 9890 + 9890+ 9890= 39560

A prism has 6 sides.

2 sides are 7 x 5

2 are 3 x 5

2 are 3 x7

Surface area = 2(7x5) + 2(3x5) + 2(3x7)

Surface area = 70 + 30 +42

Surface area = 142 square cm

Answer:

A=2(wl+hl+hw)

A= 2 (3×7+7×5+5×3)

A=2×71

A=142

Answer:

Step-by-step explanation:

[tex] f(x)=2^x[/tex]

[tex]y = {2}^{x} [/tex]

[tex]x = {2}^{y} [/tex]

[tex] {2}^{y} = x[/tex]

[tex]ln( {2}^{y} )=ln(x)[/tex]

[tex]yln(2)=ln(x)[/tex]

Answer:

4

Step-by-step explanation:

Multiply base times height for the area

Divide the area by 50

You cant have 3.888 bags so round up to get 4.

Answer:

[tex]Cos K = \frac{adjacent}{opposite} = \frac{5}{6}\\\\K = Cos^{-1}(\frac{5}{6} ) = 33.557\\K= 33.6[/tex]

Answer:

x/12 = sin(60°)

so x = 12 × 0.86602540378

x = 10.3923048454 m ~ 10.4 m ~ 10m

Hope it helps

Answer:

d

Step-by-step explanation:

i think im nt sure th0

Answer:

Since the calculated F=  2.8657 does not lie in the critical region  F (2,2)≥ 19 we conclude that there no difference between the means.

Since the calculated F=  205.0819  lies in the critical region F(1,2) ≥ 18.51  we conclude that there is a difference between the standard deviations of the three groups.

The F- statistic for the observed data is 0.101  as calculated by F- test in excel.

Step-by-step explanation:

To conduct an ANOVA randomization test we perform anova without replication in excel.

The data for the test is

                            Mean    Standard Deviation Sample Size

Never

Played Football 7602.5          1074                   25

FB with no History   6459.2         779.9                  25

FB with Concussion 5734.6       593.4                   25

Total                 6598.8      1133.5                  75

Anova: Two-Factor Without Replication    

SUMMARY Count Sum Average Variance

Row 1 2 8676.5 4338.25 21310656.13

Row 2 2 7239.1 3619.55 16127224.25

Row 3 2 6328 3164 13215968.72

Column 1 3 19796.3 6598.766667 886871.7433

Column 2 3 2447.3 815.7666667 58708.90333

ANOVA Table  

Source           Sum of     Degrees     Mean

of Variation      Square    of freedom  Squares

                            SS     df          MS              F P-value

B/w Rows 1401945.703 2 700972.8517 2.8657 0.259

B/w Col      50164633.5 1 50164633.5 205.0819  0.00484

Error     489215.59         2 244607.795                          

Total 52055794.79 5    

Set up the null and alternate hypotheses :

H0 ; there's no difference between the means and

there's no difference between the standard deviations

against the claim

Ha: there's a difference between the means and

there's  a difference between the standard deviations

The significance level is chosen at 0.05

The test statistics to use are

F1= estimated variance from Between Means/  estimated variance from Error SS

F1= s1²/s3²

F1= estimated variance from Between Standard Deviations /  estimated variance from Error SS

F2- s2²/s3²

with υ1= (2,2)  and υ2(1,2) degrees of freedom.

The critical regions for F (2,2)≥ 19 for 0.05 significance level

and F(1,2) ≥ 18.51  for 0.05 significance level

Since the calculated F=  2.8657 does not lie in the critical region  F (2,2)≥ 19 we conclude that there no difference between the means.

Since the calculated F=  205.0819  lies in the critical region F(1,2) ≥ 18.51  we conclude that there is a difference between the standard deviations of the three groups.

The F- statistic for the observed data is 0.101  as calculated by F- test in excel.

Answer:

A

Step-by-step explanation:

The baseball teams total is 24, divided by the number of answers, 25, is 1.6.

The French Club’s total is 33, divided by the number of answers, 15, is 2.2.

2.2-1.6 is 0.6.

Answer:

[tex]( x) {}^{2} = (5) {}^{2} + ( \sqrt{11} ) {}^{2} \\ {x}^{2} = 25 + 11 \\ {x}^{2} = 36 \\ x = 6[/tex]