schoology.com/assignment/4674363703/assessment Question 5 (4 points) (08.01) Consider the following pair of equations: x + y = -2 y = 2x + 10 If the two equations are graphed, at what point do the lines representing the two equations intersect? (4 points) a (-4, 2) b (4, 2) (-2, 4)​

Answer:

1. 3xy+4x

2. 10p+10

3. 12p+18pr

4. 3ab+2b

5. 2y^2+6y

Answer:

P(Type II error) = 0.1

Step-by-step explanation:

In statistics, the formula for power of a hypothesis is given by;

Power = 1 - P(Type II error)

Where P(Type II error) is the probability of making a Type II error.

We are told that the power is 0.9.

Thus;

0.9 = 1 - P(Type II error)

Making P(Type II error) the subject gives;

P(Type II error) = 1 - 0.9

P(Type II error) = 0.1

Answer:

9.) would be 89 and 10.) would be 1500 ft

Answer:

A. 89 B. 1200 ft

Step-by-step explanation:

A.

5(-4²)+9

5(16)+9

80+9

89

B.

-150+1350=

1200

Answer:

9

Step-by-step explanation:

for this problem, plug in 2 for every x

2^2 + 5(2) -5

4 + 10 -5= 9

Answer:

9

Step-by-step explanation:

plug 2 in whenever you see the x

12x + 5 - 4x + 2x² =

= 2x² + 12x - 4x + 5 = 2x² + 8x + 5

Answers:

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Explanation:

Part (a)

We have an observational study because the park ranger is observing the people coming and going, as to whether they leash their dog or not. The people being counted are not asked to fill out a form or survey, so that's why we aren't conducting a survey here.

Ideally, the park ranger should somehow make a visual note of each person so they do not count that person more than once. For example, let's say we had 500 people go through the park. Of that 500, the true number of people who leash their dogs is 20. I don't know what the true percentage is, but let's just go with this hypothetical situation. If those 20 people pass back and forth where this manager is taking note, then he might overcount some individuals and inflate that 20 to say 40 or 60, or perhaps even 100. This is if the ranger doesn't look at the individuals closely and simply marks a tally for "leash" vs "no leash". So that's why there needs to be some quick method to distinguish between any unique guest of the park.

--------------------------------

Part (b)

In contrast to part (a), we have a survey here this time. Each person is asked directly about a specific narrow well defined question. The newspaper reporter isn't going out into the field to simply watch or listen to people discuss about taxes, so that's why we don't have an observational study going on. The reporter should try to keep the question as bias-free as possible. Also, they need to ensure that the sample is representative of the population.

In neither part (a) nor part (b) is an experiment being done. An experiment requires two groups: a treatment group and control group. Also, the researcher would directly affect the treatment group to somehow change one specific aspect, while keeping the control group the same (though possibly giving a placebo of some kind). For each of these, the researcher is simply trying to stay out of the picture as much as possible while gathering the external data.

Answer: 1400 is coffee.

Step-by-step explanation:

Answer:

12(9+7)

Hope this helps  :)

Answer:

12(9+7)

Step-by-step explanation:

30 cents

Step-by-step explanation:

Answer:

they will sell 315 boxes in 7 weeks

Step-by-step explanation:

This is because you have to multiply 45 x 7 = 315

radius r=7

height h=9

let pi π = 3.14159

Answer:

b)1 hours 2 min

c)15min

Step-by-step explanation:

Answer:

150

Step-by-step explanation:

Answer:

12 feet

Step-by-step explanation:

Area of a triangle is A = 1/2 b h

Plug in:

Area = 30

Height = 5

30 = 1/2 (5)b

Divide by 1/2:

30 / 1/2 = 60

60 = 5b

Divide by 5:

60 / 5 = 12

12 = b

Base = 12 feet

Answer:

-10 if you meant 1/4(8-4p)

-20 if you meant 1/4{(8-4p)+2p}

Step-by-step explanation:

Answer:

-10 if you meant 1/4(8-4p)

-20 if you meant 1/4{(8-4p)+2p}

Step-by-step explanation:

hope this helps have a great day.

Answer:

56

Step-by-step explanation:

a dime =10 cent

divide 5.6 by 0.1=56

Answer:

$38.4

Step-by-step explanation:

20%=0.20

32*0.20=6.4

32+6.4=38.4

Answer:

its 200

Step-by-step explanation:

Answer:

1) 224.25

2) 243.31

Step-by-step explanation:

Answer: 80 + 2x +10 = 180

Step-by-step explanation:

Sorry if I'm wrong I just think that's the answer.

Answer:

Coldest has - 2° C while warmest had 2 °C

Step-by-step explanation:

Sum of all interior angles = 900°

A+B+C+D+E+F+G=900

120+B+148+90+142+130+129=900

B=900-759

B=141°

Answer:

53 1/3 yards

Step-by-step explanation:

For every 3 ft, there is a total of 1 yard. Using this conversion, we can divide the 160 ft by 3 to get our answer in yards.

160 ft / 3 = 53 1/2

Answer: 16in

4 feet= x inches

4*12= 48

48/3= 16

1/3 of 4 feet is 16in

Answer:

16 inches

Step-by-step explanation:

(1 / 3) * (4 feet)

Answer:85 degrees

Step-by-step explanation:

Formula for sum of interior angles is (n-2)180. Since there are 7 sides, n-2 is 5.

5 x 180 = 900

Add all the angles given and subtract sum from 900 and you are left with 85 for the missing angle.

Answer:

The first error is in step 1: The 2 was not distributed to both values in the parenthesis, it was only distributed to x, not the 4

Answer:

total # of boxes sold = 90

Step-by-step explanation:

54 is 60% of total #

54 = .6x

x = 54/0.6 = 90

Answer:

65.4

for this triangle we use the SOHCAHTOA rules because it is a right angled triangle.

so the rule used here is [tex]Tan x= \frac{opposite}{adjacent}[/tex]

[tex]Tan (17)= \frac{20}{x}[/tex]

we cross multiply both sides

[tex]\frac{tan(17)}{1} =\frac{20}{x}[/tex]

[tex]tan(17)x=20[/tex]

[tex]x=\frac{20}{tan(17)} =65.41705237[/tex]

the question said to the nearest tenth, so 65.4 is the final answer