Describe how to graph the solution of y ≤ −x2 + 2x.

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Explanation:

A square has all four sides that are the same length. So all four sides are 12 cm

area = side*side = 12*12 = 144 cm^2

Or you could say

area = (side)^2 = (12)^2 = 144 cm^2

Squaring a number is the same as multiplying it by itself. Hence the name "square" refers to a side length pairing up with its corresponding area value.

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Side note: The perimeter is 4*(side) = 4*12 = 48 cm. It's possible that choice B is put in there as a trick answer.

B

If you do 4x12 you will end up with 48

Answer

I'm not sure of the context, but one version is. A lumpy fat deposit beneath the skin.

Answer:

its a very common harmless skin condition that causes lumpy,dimpled flesh on the thighs ,hips and butt.

The condition is most prevalent in women.

it's 11682 hope this helps

Answer:

131.88

Step-by-step explanation:

Volume of cylinder: pi r^2h

D=2r=6

R=3

V=3^2x3.14x7=131.88

Answer: Trapezoid

Step-by-step explanation:

Trapezoids are parollelograms, that’s all

Answer:

The mean is 6.41428571429

Step-by-step explanation:

So C would be the answer

Answer:

37.68

Step-by-step explanation:

Circumference = Diameter * 3.14

3.14 * 12 = 37.68

Answer:

2 sentences above are correct

[tex]\sqrt{5}[/tex] < 5/7

15/[tex]\sqrt{10}[/tex] < 8.38

Step-by-step explanation:

Step-by-step explanation:

the empirical probability is 24/30, or 4/5. this is also the desired probability.

Answer:

1/2

Step-by-step explanation:

Answer:

Step-by-step explanation:

The step 1 is x² + 6x + 8 + 1 = 1, step 2 is x² + 6x + 9 = 1, and step 3 is (x + 3)² = 1. Then the correct option is B.

The quadratic equation is given as ax² + bx + c = 0. Then the degree of the equation will be two.

The equation is given below.

x² + 6x + 8 = 0

Convert the standard equation ax² + bx + c = 0 into the form of (x – p)² = q equation.

First, take the coefficient of x, and divide the number by 2.

⇒ 6/2

⇒ 3

Then square the resultant number will be

⇒ 3²

⇒ 9

And add both sides of the equation.

x² + 6x + 9 + 8 = 9

Simplify the equation, then the equation will be

x² + 6x + 9 = 9 – 8

x² + 6x + 9 = 1

We know that the formula of (a ± b)² = a² + b² ± 2ab, then the equation will be

x² + 2 · 3 · x + 9 = 1

             (x + 3)² = 1

Then the step 1 is x² + 6x + 8 + 1 = 1, step 2 is x² + 6x + 9 = 1, and step 3 is (x + 3)² = 1.

Then the correct option is B.

More about the quadratic equation link is given below.

https://brainly.com/question/2263981

#SPJ5

Answer:

C

Step-by-step explanation:

Answer:A

Step-by-step explanation:4-5=negative 1

Answer:

n=-559

Step-by-step explanation:

Hope this helps and have a great day. :)

Answer:

n= -559

Step-by-step explanation:

So in order to solve this, you need to subtract 184 on both sides.

n+184=-374

   -184=-184

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n= -559

So the answer is n= -559

Hope this helped!!! :)

Answer: 3rd quadrant

Step-by-step explanation:

This is a question relating to trigonometry.

First quadrant = Angles between 0∘ and 90∘.

Second quadrant = Angles between 90∘ and 180∘

Third quadrant = Angles between 180∘ and 270∘

Fourth quadrant = Angles between 270∘ and 360∘

Therefore, since 250° is between 180° and 270°, it's in the 3rd quadrant.

Answer:

-7

Step-by-step explanation:

so -12--7+2+-4 is the same as -12+7+2-4. Simplify this to get -5+-2. We know that -5+-2 is equal to -7.

If this helps please mark as brainliest

Answer:

[tex]\tan (30 + 60) = unde f ined[/tex]

Step-by-step explanation:

Given

[tex]\tan (A + B) = \frac{\tan A + \tan B}{1 - \tan A * \tan B}[/tex] ---- right expression

[tex]A = 30^o; B = 60^o[/tex]

Required

Solve

[tex]\tan (A + B) = \frac{\tan A + \tan B}{1 - \tan A * \tan B}[/tex]

Substitute: [tex]A = 30^o; B = 60^o[/tex]

[tex]\tan (30 + 60) = \frac{\tan 30 + \tan 60}{1 - \tan 30 * \tan 60}[/tex]

In radical forms, we have:

[tex]\tan (30 + 60) = \frac{\sqrt 3/3 + \sqrt 3}{1 - \sqrt 3/3 * \sqrt 3}[/tex]

[tex]\tan (30 + 60) = \frac{\sqrt 3/3 + \sqrt 3}{1 - 1}[/tex]

[tex]\tan (30 + 60) = \frac{\sqrt 3/3 + \sqrt 3}{0}[/tex]

[tex]\tan (30 + 60) = unde f ined[/tex]

Answer:

a) H0 : P = 0.07

   Ha : P ≠ 0.07

b) p -value = 0.1770

Step-by-step explanation:

P = 7% = 0.07

x (result ) = 7 , n = 163

p = x / n = 7 / 163 = 0.043

a) Using a significance level ( ∝ ) of 0.05, estimate the appropriate hypothesis

H0 : P = 0.07

Ha : P ≠ 0.07

conduct a  Z- test statistic

Z = ( p - P ) / [tex]\sqrt{\frac{P(1-P)}{n} }[/tex]

  = ( 0.043 - 0.07 ) / [tex]\sqrt{\frac{P(1-P)}{n} }[/tex]  =  - 1.35

Critical value ( Z₀.₀₂₅ ) = ± 1.96

we fail to reject H0 given that | z | < Zcritical because there is not enough evidence to conclude that proportion change

b) Determine the p-value of the test

P-value = P ( | Z | > Z )

             = 2 * P ( Z < -1.35 )

             = 0.1770

The p-value ( 0.1770 ) > ∝ ( 0.05 ) hence we fail to reject H0 ( i.e. the conclusion agrees with part a above )

Answer:

Step-by-step explanation:

 40% + 35 % = 80 %    so 20% are dated after 1980

20% is .20 in decimal form

.20 (1600) = 320 coins dated after 1980

Answer:

-6 + 2 = -4

Step-by-step explanation:

-6 + 2 = -4

Answer:

Step-by-step explanation:

(x1 = -4, y1 = -4) y ( x2 = -4, y2 = -9)

la pendiente es indefinida por que es una recta vertical

m= (y2-y1)/(x2-x1) = (-9+4)/ (-4+4) = -5/0 indefinida

Answer:

- Computer-assisted self-interviewing.

Step-by-step explanation:

'Primary data' is characterized as the data or the information gathered firsthand for a particular purpose or research. Such data is collected personally through surveys, observations, and direct interviews.

As per the details, the given data illustrates 'computer-assisted self-interviewing' as the kind of primary data as the data is collected directly from the travelers visiting the airport using the brief survey method on a tablet. This will help Teavana make credible inferences regarding the people's reviews about their latest tea flavors so that they can make necessary alterations as per the likes and preferences of the people.

Answer:

Option F, y = 2x + 5 would be the right answer

Hope this helps!

Answer:

Option F would be correct.

Hope this helps<3

Have a good day :)

~Amy

Answer:

x = 7

y = -2

Step-by-step explanation:

If you plug in 7 for x and -2 for y, it makes the equation true.

-3x-y= -19

-3(7) - (-2) = -19

-21 + 2 = -19

     -2      -2

-21 = -21

Answer:

40

Step-by-step explanation:

Average = Sum / Count

= 440 / 11

= 40

Answer:

Step-by-step explanation:

The mean is the total number to add .them you divide the total for of value ,

in this case     your add   al number 54+46+43+40+34+20+28+50+45+42=382

   in /     382/11 = 34.727272... = 35

Answer:

.68???

Step-by-step explanation:

When renting a limo for prom, the number of people varies inversely with the cost per person. Originally

there were 6 people and the cost per person was $34. If the number of people changed to 12, what would be

the new cost per person?

*variations and square roots*

Given:

The given sum is:

[tex]\sum _{k=4}^9(5k+3)[/tex]

To find:

The expanded form and find the sum.

Solution:

We have,

[tex]\sum _{k=4}^9(5k+3)[/tex]

The expanded form of given sum is:

[tex]\sum _{k=4}^9(5k+3)=(5(4)+3)+(5(5)+3)+(5(6)+3)+(5(7)+3)+(5(8)+3)+(5(9)+3)[/tex]

[tex]\sum _{k=4}^9(5k+3)=(20+3)+(25+3)+(30+3)+(35+3)+(4+3)+(45+3)[/tex]

[tex]\sum _{k=4}^9(5k+3)=23+28+33+38+43+48[/tex]

[tex]\sum _{k=4}^9(5k+3)=213[/tex]

Therefore, the correct option is C.

Answer:

The half-life of the radioactive substance is of 3.25 days.

Step-by-step explanation:

The amount of radioactive substance is proportional to the number of counts per minute:

This means that the amount is given by the following differential equation:

[tex]\frac{dQ}{dt} = -kQ[/tex]

In which k is the decay rate.

The solution is:

[tex]Q(t) = Q(0)e^{-kt}[/tex]

In which Q(0) is the initial amount:

8000 counts per minute on a Geiger counter at a certain time

This means that [tex]Q(0) = 8000[/tex]

500 counts per minute 13 days later.

This means that [tex]Q(13) = 500[/tex]. We use this to find k.

[tex]Q(t) = Q(0)e^{-kt}[/tex]

[tex]500 = 8000e^{-13k}[/tex]

[tex]e^{-13k} = \frac{500}{8000}[/tex]

[tex]\ln{e^{-13k}} = \ln{\frac{500}{8000}}[/tex]

[tex]-13k = \ln{\frac{500}{8000}}[/tex]

[tex]k = -\frac{\ln{\frac{500}{8000}}}{13}[/tex]

[tex]k = 0.2133[/tex]

So

[tex]Q(t) = Q(0)e^{-0.2133t}[/tex]

Determine the half-life of the radioactive substance.

This is t for which Q(t) = 0.5Q(0). So

[tex]Q(t) = Q(0)e^{-0.2133t}[/tex]

[tex]0.5Q(0) = Q(0)e^{-0.2133t}[/tex]

[tex]e^{-0.2133t} = 0.5[/tex]

[tex]\ln{e^{-0.2133t}} = \ln{0.5}[/tex]

[tex]-0.2133t = \ln{0.5}[/tex]

[tex]t = -\frac{\ln{0.5}}{0.2133}[/tex]

[tex]t = 3.25[/tex]

The half-life of the radioactive substance is of 3.25 days.