what is the quotient 7^-6/7^2

Answer:

A. by adding an identical classroom and allowing students t use electric ans in it

Step-by-step explanation:

Because Fans are opposite to natural Air

Answer:

s= the customer buy a shirt

p= the customer buy pants

[tex] p(s) = 0.55, p(p) = 0.25 , p(s \cap p) =0.20[/tex]

And we want to find this probability:

[tex] p(s \cup p) [/tex]

And we can use the definition of total probability and we have:

[tex] p(s \cup p) = p(s) +p(p) -p(s \cap p)[/tex]

And replacing we got:

[tex] p(s \cup p) = 0.55+0.25 -0.20 = 0.60[/tex]

And the best answer for this case is:

B. 0.60

Step-by-step explanation:

For this case we can define the following events:

s= the customer buy a shirt

p= the customer buy pants

And we have the following probabilities given:

[tex] p(s) = 0.55, p(p) = 0.25 , p(s \cap p) =0.20[/tex]

And we want to find this probability:

[tex] p(s \cup p) [/tex]

And we can use the definition of total probability and we have:

[tex] p(s \cup p) = p(s) +p(p) -p(s \cap p)[/tex]

And replacing we got:

[tex] p(s \cup p) = 0.55+0.25 -0.20 = 0.60[/tex]

And the best answer for this case is:

B. 0.60

x+3y-9

Hope this helps!

19 is the median of the numbers

Answer:

a = 3, b = 6, c = 5

Step-by-step explanation:

[tex] {3}^{ \frac{6}{5} } = \sqrt[5]{ {3}^{6} } \\ equating \: it \: with \\ \sqrt[c]{ {a}^{b} } \: we \: find : \\ a = 3 \: \: b = 6 \: \: c = 5 \\ [/tex]

Answer:

  20

Step-by-step explanation:

The perimeter is the sum of the side lengths:

  4 + 6 + 4 + 6 = 20 . . . . units

Answer:

B) n = 6

Step-by-step explanation:

4n + 12 = 8n - 12

Combine like terms

24 = 4n

n = 6

Answer: 6

Step-by-step explanation:

set 4n+12 and 8n-12 equal to each other and you should get 6

Answer:

f(5) = 3*5

f(5) = 15

Answer: your answer is 243 :)

Step-by-step explanation:

Answer:

The answer would be A

Step-by-step explanation:

|a| is absolute value so it means it equals 5

Answer:

Step-by-step explanation:

Hello!

Tourists that visit Thailand are exposed to being bitten by a stray dog.

People that get bitten by a stray dog are at risk of getting rabies.

1) So you can determine two possible events that may happen:

A: The tourist got bitten by a stray dog.

B: The tourist got rabies.

2)

a.

"13 out of 1000 tourists get bit by a dog"

P(A)= 0.013

b.

"The percentage of tourists who have been bitten by a dog that get rabies is 15%" i.e. Given that the tourist was bitten by a dog, he got rabies. This is a conditional probability, is the probability of "B" given that "A" has already happened:

P(B|A)= 0.15

c.

"Ninety-nine percent of tourists who do not get bit by a dog will not get rabies."

The event "The tourist did not get bitten by a dog" is complementary to "A", so I'll symbolize it as: [tex]A^c[/tex]

The event "The tourist did not get rabies" is complementary to the event "B", so I'll symbolize it as [tex]B^c[/tex]

[tex]P(B^c|A^c)= 0.99[/tex]

3) See attachment for table

P(A)= 0.013 ⇒ P([tex]A^c[/tex])= 1 - 0.013= 0.987

P(A∩B)= P(B|A)*P(A)= 0.15*0.013= 0.00195 = 0.002

P(A∩[tex]B^c[/tex])= P(A) - P(A∩B)= 0.013-0.00195= 0.01105 = 0.011

[tex]P(B^c|A^c)= 0.99[/tex]

P([tex]B^c[/tex]∩[tex]A^c[/tex])= P([tex]A^c[/tex]) * [tex]P(B^c|A^c)[/tex]= 0.987*0.99= 0.977

P([tex]B^c[/tex])= P(A∩[tex]B^c[/tex]) + P([tex]B^c[/tex]∩[tex]A^c[/tex])= 0.011 + 0.977= 0.988

P(B∩[tex]A^c[/tex])= P([tex]A^c[/tex]) - P([tex]B^c[/tex]∩[tex]A^c[/tex])= 0.987 - 0.977= 0.01

5) P(B)= P(A∩B) + P(B∩[tex]A^c[/tex])= 0.002 + 0.01= 0.012

4) Attch

6)

P(A|[tex]B^c[/tex])= P(A∩[tex]B^c[/tex]) = 0.011   = 0.0111

                   P([tex]B^c[/tex])       0.988

I hope this helps!

Answer:

9.88888888889 or rather, 8 8/9

Step-by-step explanation:

Look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

v-9 (14)

Step-by-step explanation:

Answer:

P of b=7/20

P of g=3/20

P of y=6/20=3/10

P of p=4/20=1/5.

Step-by-step explanation:

there are in total 20 tiles so S=20

there are 7 blue tiles so P=E/S=7/20

there are 3 green tiles so P=E/S=3/20

there are 6 yellow tiles so P=E/S=6/20=3/10.

there are 4 purple tiles so P=E/S=4/20=1/5

Answer:66 hours of video games in three weeks!

Step-by-step explanation:First you would multiply 6 by 2 because the weekend refers to Saturday and Sunday which are two days,when you multiply 6 by 2 you get 12.Next you would multiply 2 by 5 because the problem says  2 hours each day of the week,when you multiply 2 by 5 you get 10.Then you add 10 and 12 which gets you to 22.Last but not least you multiply 22 by 3 because the question says  how many hours does mr.danie spend playing video games over 3 weeks,which bring you to 66!

I hope I helped!

Answer:

a. area of the football field = 40ײ + 240x + 200 ft²

b. area = 57600  ft²

Step-by-step explanation:

The football field is rectangular in shape . Therefore, the area of the football field is the product of length and width.

length = 10x + 10

width = 4x + 20

area of the football field = (10x + 10)(4x + 20)

area of the football field = 40ײ + 200x + 40x + 200

area of the football field = 40ײ + 240x + 200

The standard form polynomial simply implies that the terms are ordered from the largest exponent to the smallest exponent. Therefore the standard form will be  

area of the football field = 40ײ + 240x + 200 ft²

b. area of the football field when width is 160 ft.

The width of the field = 4x + 20. Therefore

160 = 4x + 20

4x = 160 - 20

4x = 140

divide both sides by 4

x = 140/4

x = 35

area = length × width

area = (10x + 10) × 160

where

x = 35

area = (350 + 10) × 160

area = 360 × 160

area = 57600  ft²

a. area of the football field = 40ײ + 240x + 200 ft²

b. area = 57600  ft²

length = 10x + 10

width = 4x + 20

So,

area of the football field = (10x + 10)(4x + 20)

= 40ײ + 200x + 40x + 200

= 40ײ + 240x + 200

b. area of the football field when width is 160 ft.

The width of the field = 4x + 20.

So,

160 = 4x + 20

4x = 160 - 20

4x = 140

x = 35

area = length × width

= (10x + 10) × 160

= (350 + 10) × 160

= 360 × 160

= 57600  ft²

learn more: https://brainly.com/question/1504221?referrer=searchResults

Answer:

[tex]\sin{65\º}\cos{25\º} + \sin{25\º}\cos{65\º} = \sin{65\º + 25\º} = \sin{90\º} = \sin{\frac{\pi}{2}} = 1[/tex]

Step-by-step explanation:

We use trigonometric identities to solve this question:

[tex]\sin{A + B} = \sin{A}\cos{B} + \sin{B}\cos{A}[/tex]

In this problem:

We have the right side of the equality, that is:

[tex]\sin{65\º}\cos{25\º} + \sin{25\º}\cos{65\º} = \sin{A}\cos{B} + \sin{B}\cos{A}[/tex]

Which means that [tex]A = 65\º, B = 25\º[/tex]

Then

[tex]\sin{65\º}\cos{25\º} + \sin{25\º}\cos{65\º} = \sin{65\º + 25\º} = \sin{90\º} = \sin{\frac{\pi}{2}} = 1[/tex]

Answer:

(0, -1)

Step-by-step explanation:

((4 + (-4))/2, (2 + (-4))/2) =

(0/2, -2/2) =

(0, -1)

Answer:

The area of the shape is [tex]A=886 \:cm^2[/tex].

Step-by-step explanation:

The shape in the graph is a composite figure is made up of several simple geometric figures such as triangles, and rectangles.

Area is the space inside of a two-dimensional shape. We can also think of area as the amount of space a shape covers.

To calculate the area of a composite shape you must divide the shape into rectangles, triangles or other shapes you can find the area of and then add the areas back together.

First  separate the composite shape into three simpler shapes, in this case two rectangles and  a triangle. Then find the area of each figure.

To find the area of a rectangle, we multiply the length of the rectangle by the width of the rectangle.

The area of the first rectangle is [tex]A=34\cdot 16=544\:cm^2[/tex]

The area of the second rectangle is [tex]A=11\cdot19=209\: cm^2[/tex]

The area of a triangle is given by the formula [tex]A=\frac{1}{2} bh[/tex] where b is the base and h is the height of the triangle.

The area of the triangle is [tex]A=\frac{1}{2} \cdot 14\cdot19=133\:cm^2[/tex]

Finally, add the areas of the simpler figures together to find the total area of the  composite figure.

[tex]A_{composite\:shape}=544+209+133=886 \:cm^2[/tex]

Answer:

A

Step-by-step explanation

Answer:

a) Null hypothesis:[tex]p\leq 0.12[/tex]  

Alternative hypothesis:[tex]p > 0.12[/tex]  

b) [tex] z_{\alpha}=1.64[/tex]

c) [tex]z=\frac{0.134 -0.12}{\sqrt{\frac{0.12(1-0.12)}{1000}}}=1.362[/tex]  

d) [tex]p_v =P(z>1.362)=0.0866[/tex]  

e) For this case since the statistic is lower than the critical value and the p value higher than the significance level we have enough evidence to FAIL to reject the null hypothesis so then we don't have information to conclude that the true proportion is higher than 0.12

Step-by-step explanation:

Information given

n=1000 represent the random sample selected

X=134 represent the number of young drivers ages 18 – 24 that had an accident

[tex]\hat p=\frac{134}{1000}=0.134[/tex] estimated proportion of young drivers ages 18 – 24 that had an accident

[tex]p_o=0.12[/tex] is the value that we want to verify

[tex]\alpha=0.05[/tex] represent the significance level

Confidence=95% or 0.95

z would represent the statistic

[tex]p_v{/tex} represent the p value

Part a

We want to verify if the population proportion of young drivers, ages 18 – 24, having accidents is greater than 12%:  

Null hypothesis:[tex]p\leq 0.12[/tex]  

Alternative hypothesis:[tex]p > 0.12[/tex]  

The statistic would be given by:

[tex]z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}[/tex] (1)  

Part b

For this case since we are conducting a right tailed test we need to find a critical value in the normal standard distribution who accumulates 0.05 of the area in the right and we got:

[tex] z_{\alpha}=1.64[/tex]

Part c

For this case the statistic would be given by:

[tex]z=\frac{0.134 -0.12}{\sqrt{\frac{0.12(1-0.12)}{1000}}}=1.362[/tex]  

Part d

The p value can be calculated with the following probability:

[tex]p_v =P(z>1.362)=0.0866[/tex]  

Part e

For this case since the statistic is lower than the critical value and the p value higher than the significance level we have enough evidence to FAIL to reject the null hypothesis so then we don't have information to conclude that the true proportion is higher than 0.12

Answer:

the answer i think is DMR

Step-by-step explanation:

because u use the letters from the corners

Answer: 10^3

Step-by-step explanation:

Since the problem is displayed at [tex](10^1)^3[/tex], you see that there is a parenthesis separating the [tex]10^1[/tex] and the 3. In long story short, if you see a parenthesis, if means to multiply.

[tex]10^1^*^3=10^3[/tex]

Answer:

the second one

Step-by-step explanation:

t = 2

so the answer is b?

it shows many numbers.

2t = 4 [simplify]

divide both sides by 2

2t/2 = 4/2

so t = 2, but i see that theres a 9 on b? is that an accident?

Answer:

A. For the situation presented, we find that the researcher assumes that the test with the new method will obtain results at a cost of less than $ 220.

the null hypothesis will be that the operation of the new method will cost not less than $ 220.

the alternative hypothesis will be that the operation of the new method will be less than $ 220

B. With the situation of the exercise we can affirm that the null hypothesis is not rejected, since the director has verified that the cost of the new method is below $ 220, so the new method can be implemented.

C. For this situation, it is observed that the null hypothesis has been rejected, so after verification, the manager has observed that the cost of the new method is less than $ 220, so the manager's proposal can be developed.

Answer:

a) H0: μ ≥ 220

Ha: μ < 220

b) there is no sufficient evidence to support the claim that the new production method reduces cost

c) there is sufficient evidence to support the claim that the new production method reduces cost

Step-by-step explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

For the case above;

The null hypothesis is that the mean cost of production is equal or greater than $220 per hour.

H0: μ ≥ 220

The alternative hypothesis is that the mean cost of production is less than $220 per hour

Ha: μ < 220

b) the conclusion when H0 cannot be rejected is that there is no enough evidence to reject the Null hypothesis. So, there is no sufficient evidence to support the claim that the new production method reduces cost

c) the conclusion when H0 can be rejected is that there is enough evidence to reject the Null hypothesis. So, there is sufficient evidence to support the claim that the new production method reduces cost

Answer:

-2 , -1,  2,  5

Step-by-step explanation:

Answer:

-2,-1,2,5

Step-by-step explanation:

Answer: No she used the wrong slopes when graphing the equations

Step-by-step explanation:

Answer:

D

Step-by-step explanation: No. She used the wrong slopes when graphing the equations.

Answer:81

Step-by-step explanation:trust

Answer:

the first one

Step-by-step explanation:

hope this helps

Answer:

A.

Step-by-step explanation:

The coordinates are used in the order of (x1,y1)and (x2,y2)