A- (-2,0) and (1,0)
B- (0,1)
C- (0,4)
D- (-4,0) and (2,0)

Answer:

only 5

Step-by-step explanation:

Answer:

The calculated value of t= 0.1908 does not lie in the critical region t= 1.77 Therefore we accept our null hypothesis that  fatigue does not significantly increase errors on an attention task at 0.05 significance level

Step-by-step explanation:

We formulate null and alternate hypotheses are

H0 : u1 < u2 against Ha: u1 ≥ u 2

Where u1 is the group tested after they were awake for 24 hours.

The Significance level alpha is chosen to be ∝ = 0.05

The critical region t ≥ t (0.05, 13) = 1.77

Degrees of freedom is calculated df = υ= n1+n2- 2= 5+10-2= 13

Here the difference between the sample means is x`1- x`2= 35-24= 11

The pooled estimate for the common variance σ² is

Sp² = 1/n1+n2 -2 [ ∑ (x1i - x1`)² + ∑ (x2j - x`2)²]

= 1/13 [ 120²+360²]

Sp = 105.25

The test statistic is

t = (x`1- x` ) /. Sp √1/n1 + 1/n2

t=   11/ 105.25 √1/5+ 1/10

t=  11/57.65

t= 0.1908

The calculated value of t= 0.1908 does not lie in the critical region t= 1.77 Therefore we accept our null hypothesis that  fatigue does not significantly increase errors on an attention task at 0.05 significance level

Answer:26

Step-by-step explanation:

Answer:

a = 11

Step-by-step explanation:

9a + 6 + 75 = 180

9a + 81 = 180

9a = 99

a = 11

Answer:

woow

Step-by-step explanation:

Answer:

Step-by-step explanation:

cheese

Answer:

Use rules of logarithms to expand.

2

log

3

(

x

)

−

4

−

4

log

3

(

y

)

Step-by-step explanation:

Answer:

1,5 I think

Step-by-step explanation:

hope this helps

Answer:

im not sure but i think its 1,5

Answer:

YES, my friend is correct.

Step-by-step explanation:

Formula for the volume of the rectangular prism = Length*Width*Height

Length = 7 mm

Width = 4 mm

Height = 2 mm

Plug in the values

Volume = 7*4*2

Volume = 28*2

= 56 mm³

Therefore, my friend is correct.

Answer:

The probability that I need to contact four people is 9.11%.

Step-by-step explanation:

Since I am looking for a student at my college who lives within five miles of me, and I know that 55 percent of the 25,000 students do live within five miles of me, and I randomly contact students from the college until one says he or she lives within five miles of me, to determine what is the probability that I need to contact four people, the following calculation must be performed:

0.45 x 0.45 x 0.45 = X

0.2025 x 0.45 = X

0.091125 = X

Therefore, the probability that I need to contact four people is 9.11%.

Answer:

8

Step-by-step explanation:

sin Θ = opp / hyp

Θ = 60

opp = 4

hyp = x

sin 60 = 4 / x                 sin 60 = 0.5     or 1/2

  1/2   = 4 / x

  x/2  =  4

    x   =  8

Answer: 28.4

Step-by-step explanation:

Answer:

C 2 hours

Step-by-step explanation:

hope it's helpful

thank you

Answer:

Part A

W W W M W W T W W L W W

W W M M W M T W M L W M

W W T M W T T W T L W T

W W L M W L T W L L W L

W M W M M W T M W L M W

W M M M M M T M M L M M

W M T M M T T M T L M T

W M L M M L T M L L M L

W T W M T W T T W L T W

W T M M T M T T M L T M

W T T M T T T T T L T T

W T L M T L T T L L T L

W L W M L W T L W L L W

W L M M L M T L M L L M

W L T M L T T L T L L T

W L L M L L T L L L L L

Part B

There are 64 possible outcomes. The sample size is 64.

Part C

To find the probability that Erin drinks lemonade one day, tea one day, and water one day, consider all the cases in which L, T, and W occur one time. Because the order doesn't matter in this scenario, these six outcomes from the list represent the desired event: W T L, T W L, T L W, W L T, L W T, and L T W.

The size of the sample space is 64. So, the probability that Erin drinks lemonade one day, tea one day, and water one day is 3/32.

Part D

To find the probability that Erin drinks water on two days and lemonade one day, we consider all the cases in which two Ws and one L occur. Because the order doesn't matter in this scenario, these three outcomes from the list represent the event: W W L, W L W, and L W W.

The size of the sample space is 64. So, the probability that Erin drinks water two days and lemonade one day is 3/64

Step-by-step explanation:

Answer:

The answer should be 0.66

Answer:

1

Step-by-step explanation:

Answer:

x=8

Step-by-step explanation:

if you multiply 6 by 8 and subtracted by 3 it will equal 45

9514 1404 393

Answer:

  (c)  (10, 2)

Step-by-step explanation:

Adding the two equations, we have ...

  (d +e) +(-d +e) = (12) +(-8)

  2e = 4

  e = 2 . . . . . . matches choice C

  (d, e) = (10, 2)

Answer:

Step-by-step explanation:

Given that:

To Label:

Adding equation (i) and (ii).

⟶ d + e + (- d + e) = 12 + (- 8)

⟶ d + e + - d + e = 12 - 8

Cancelling d.

⟶ 2e = 4

⟶ 2e = 2 × 2

Cancelling 2.

⟶ e = 2

In equation (i)

⟶ d + e = 12

Putting the value of e.

⟶ d + 2 = 12

⟶ d = 12 - 2

⟶ d = 10

Hence,

Answer:

17 feet

Step-by-step explanation:

a² + b² = c²

a² + 6² = 15²

a² + 36 = 225

a² = 189

a = 17

Answer:

1) Statistic

2) Parameter

3) Statistic

4) Parameter.

Step-by-step explanation:

Parameter: is a number that describes the whole population.

Statistic: is a number that describes a sample.

The difference is:

50% of the cats are nice (parameter, because talks about all the cats)

out of 100 cats surveyed, 39 are nice (statistic, because talks about a sample of 100 cats)

Then:

1) 85% of those surveyed were in favor of bike lanes.

This only refers to the surveyed people, so this only refers to a sample (and not the population that this sample represents) then this is a statistic statement.

2) Each member of the soccer team has an average of 2 jerseys.

In this case, we are talking about the whole population (the soccer team) then this is a parameter

3) Of the 100 swim teams surveyed across America, 23 practice 10 hours a week.

Here the information is about the sample (only 100 swim teams). So here the correct option is statistic.

4) The golf team's average score is 79

Here the information is about the average score for the entire golf team, so this information is about all the population in the golf team, then in this case the correct option is parameter.

Answer:

Statistic

Parameter

Statistic

Parameter

Step-by-step explanation:

i took the test :)

Answer:

x=38

Step-by-step explanation:

First, know that the sum of the angles in a triangle is 180.

Then, add the angles. 2x+38+x+x-10.

Make them equal to 180.

2x+38+x+x-10=180

Simplify.

4x+28=180

Subtract 28 from 180.

4x=152

Divide 4 from 152 to make x alone.

x=38

There you go!

Please mark brainliest!

Answer:

[tex]\%H = 8\%[/tex]

Step-by-step explanation:

Given

See attachment for table

Required

The percentage of historical

From the table, we have:

[tex]Historical = 2[/tex]

and

[tex]Total = 6+3+7+2+7[/tex]

[tex]Total = 25[/tex]

So, the percentage of historical is:

[tex]\%H = \frac{Historical}{Total} * 100\%[/tex]

This gives:

[tex]\%H = \frac{2}{25} * 100\%[/tex]

[tex]\%H = \frac{200\%}{25}[/tex]

[tex]\%H = 8\%[/tex]

Answer:

8%

Step-by-step explanation:

Answer:

I will try my best to help

Step-by-step explanation: