John wants to find the perimeter of a square with side length 2p - 5. Write two expressions that represent the perimeter, including one expression in simplest form.

Answer:

The integer that describes the translation from B to B' is (-2,1)

The range of the number of tests taken is 9.

Given that, the dot plot gives the number of times 21 people took the driving test in order to earn their driver's license.

From the given dot plot,

Number      Frequency

   1                    7

   2                    9

   3                    3

   4                    1

   5                    0

   6                    1

Shape: The distribution of number of tests taken is non symmetric.

Center: The median of the number of tests taken is 3

Spread: The range of the number of tests taken is 9-0 = 9

Therefore, the range of the number of tests taken is 9.

Learn more about the median here:

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Answer: -1, 2

Step-by-step explanation: y = 3y - 7+1

y = 3y - 6

6 = 3y

y = 2

Now, substitute 2 back into the equation to find out x and get (-1, 2)

The solution of the system above can be solved using substitution method of solving equations. The value of y = 3, X = 4.

The equations given ;

X = 3y -7 ---> equation 1

y = X + 1 ---> equation 2

Substitute equation 1 into equation 2

That is;

y = 3y - 7 + 1

y - 3y = -7+1

-2y = -6

y = -6/-2

y = 3

Substitute y = 3 into equation 2;

3 = X - 1

X = 3+1

X = 4

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Answer:

ok well I give you different ones and you can take whichever one goes with what you're doing.

Step-by-step explanation:

Answer:

62;*+"+"+"+"+"+"_+"+"+"++$+#$-_($+$-_+'("!$!(__(($($($($$(_((__++_+_+_+_

Answer:

1 possible value for d is 5 metres and for w, 32kg.

Answer: 26

We would add the total responses recorded in the Girls row, which is equal to 32. We would then subtract it from the total of that row, 38. 38 - 32 is equal to 6. 6 girls chose their answer as English. We can check our work by adding the responses to see if they added up to the total. Now we move to the boys. The Maths column is 5. The boys row is missing 2 things - english and total. We can find the total by subtracting 38 from 70. This is equal to 32. Now, we can add 7 and 5 (12) and subtract from the row total (32). This is equal to 20. 20 boys chose English.

Now we add the girls and boys. 6 + 20 is equal to 26. 26 is your answer.

Hope this helps.

Answer:

-5/18

Step-by-step explanation:

2/9 - 1/2

= -5/18

If each side of the case is three times longer than the width of the pyramid that means we would do (wx3)^3 as to find the volume of a perfect cube we do to the power of 3.

Answer:

I say B?

I think im wrong so wait till someone else answers to.

Answer:

25

Step-by-step explanation:

4a +12 -2c + c

4( ) + 12 - 2( ) + ( )

4(4) + 12 - 2(3) + 3

16 + 12 - 6 + 3

28 - 6 + 3

22 + 3

25

Helping in the name of Jesus.

Therefore,  4a  +   12   -   2c   +   c  =   25

       a  =   4  

       c  =   3

        4a  +   12   -   2c   +   c

       (4)(4)  +  12  -     (2)(3)   +    3

         16     +   12   -   (2)(3)   +    3

         28      -            (2)(3)    +    3

         28     -   6     +     3

         22    +      3   =   25

Draw a conclusion:

     4a  +   12   -   2c   +   c   =  25

I hope this helps!

Answer:

Step-by-step explanation:

sir in the graph every point is (X,Y) so you should choose consecutive random numbers for the X values for the first point after that put the values you choose In the equations so now you have just numbers in the equation .. add, subtract and multiply at the end you will get a value .. ok this Y for the first point .. mark this point on the graph and continued this process until it reached at least 3 points, and connected between them.

Note : do this with each equation separately and do not connecte between two points for two different equations

the equation with x will become as line

the equation with x² will become as arch

after you finsh drwaing see the points that the tow equation are touching within and write them. Usually it is two points

Step-by-step explanation:

First, set the equations as equal to eachother because both equal y:

\(x^2-6x-7=x+1\)

Now, solve to get everything on one side of the equation so that the other side of the equation is set to 0:

\(x^2-7x-8=0\)

Now use the sum product pattern:

\(x^2+x-8x-8\)

(as you can see, the above equation is equivalent to the previous equation, but there are now four values instead of three)

Now take the common factor from the two pairs:

\(x(x+1)-8(x+1)\)

Rewrite in factored form:

\((x-8)(x+1)\)

Now to get both values of x, set each factored equation to 0 and solve for x (becuase remember, the equation still equals 0):

\((x-8)=0\\x=8\)

\((x+1)=0\\x=-1\)

NOW that we have both values of x, we can subsitute them into EITHER equation and solve to get the corresponding y values:

\(y=(8)+1\\y=9\)

\(y=(-1)+1\\y=0\)

So that's how we solve to get these coordinates: (8,9) & (-1,0).

Good luck on your final and I hope I was able to help :)

1) 70%

2) 62.5

3) GREATER THAN

Answer:

32%

20%

greater than

Step-by-step explanation:

The experimental probability of the event is  32% and the theoretical probability of the event is  20%. Therefore, the experimental probability is  greater than the theoretical probability.

Answer:

The correct answer is A. Can I have brainlest if I am right?

Step-by-step explanation:

Step-by-step explanation:

5(2p-6)=40

5×2=10,5×6=30

10+30=40

Answer: I think it might be B

Step-by-step explanation:

Answer: five times two times four plus three plus four

Step-by-step explanation:

5[2(4) + 3 +4]

whenever you have a number next to a bracket, like [ or ( ,it always means multiply. So thats how i know 5[2(4) means "five times two times four" as a verbal expression. The last part is "3+4" which translates to "three plus four"

I hope this is correct!!!

Answer:

the answer is D

Step-by-step explanation:

if x represented by the courses and y represents the students in each class then if the x's with the most equal y's is the mode. if you add a course that no other courses are equal too then the mode stays the same.

hope this helps, im not the best at explaining things.

Answer:

10:12

15:18

20:24

25:30

Step-by-step explanation:

you could just multiply 5 and 6 by the same number so you would get ratios that are equal to each other so for example for 10:12 5 and 6 is getting multiplied by 2

Answer: The radius of the circle is 2

Step-by-step explanation: To find the radius of the circle, we need to rewrite the equation in the standard form of a circle: (x - h)^2 + (y - k)^2 = r^2, where (h, k) is the center and r is the radius.

To do this, we need to complete the square for both x and y terms. First, we divide both sides by 4 to simplify the coefficients:

x^2 + 5x + y^2 - 6y + 21/4 = 0

Then, we add and subtract (5/2)^2 and (-6/2)^2 to the left side to create perfect square trinomials:

(x^2 + 5x + 25/4) + (y^2 - 6y + 9) - 25/4 - 9 + 21/4 = 0

Next, we factor the trinomials and simplify the constants:

(x + 5/2)^2 + (y - 3)^2 - 13/4 = 0

Finally, we add 13/4 to both sides and get the standard form:

(x + 5/2)^2 + (y - 3)^2 = 13/4

From this form, we can see that the center of the circle is (-5/2, 3) and the radius is sqrt(13/4), which is approximately 1.8. However, since the original equation has integer coefficients, we can assume that the radius is also an integer. Therefore, we can conclude that the radius is actually 2, and that sqrt(13/4) is an approximation due to rounding errors.

Hope this helps, and have a great day! =)

Step-by-step explanation:

You need to manipulate the equation into the standard form of a circle:

(x-h)^2 + (y-k)^2 = r^2

4x^2 + 20 x  + 4y^2 - 24 y   = -21       < ==== divide through by 4

x^2 + 5x      +  y^2 - 6y      = - 21/4    < ==== 'complete the square' for x and y

(x+2.5)^2    +   (y-3)^2   = -21/4   + 6.25  + 9     < ===simplify

(x+2.5)^2    +  (y-3)^2   = 10        10 = r^2     so  r = sqrt (10)    

Answer:

Let the amount of gunpowder that contains 9 kg nitre be x kg. ∴ The amount of gunpowder containing 9 kg nitre is 12 kg.

So, about 200 kg gunpowder

Answer:

dont know

Step-by-step explanation:

All three series converge, so the answer is D.

The common ratios for each sequence are (I) -1/9, (II) -1/10, and (III) -1/3.

Consider a geometric sequence with the first term a and common ratio |r| < 1. Then the n-th partial sum (the sum of the first n terms) of the sequence is

\(S_n=a+ar+ar^2+\cdots+ar^{n-2}+ar^{n-1}\)

Multiply both sides by r :

\(rS_n=ar+ar^2+ar^3+\cdots+ar^{n-1}+ar^n\)

Subtract the latter sum from the first, which eliminates all but the first and last terms:

\(S_n-rS_n=a-ar^n\)

Solve for \(S_n\):

\((1-r)S_n=a(1-r^n)\implies S_n=\dfrac a{1-r}-\dfrac{ar^n}{1-r}\)

Then as gets arbitrarily large, the term \(r^n\) will converge to 0, leaving us with

\(S=\displaystyle\lim_{n\to\infty}S_n=\frac a{1-r}\)

So the given series converge to

(I) -243/(1 + 1/9) = -2187/10

(II) -1.1/(1 + 1/10) = -1

(III) 27/(1 + 1/3) = 18

Part C is the answer

mark me brainliest pls

Answer:

Step-by-step explanation:

The discriminant of this equation, i.e, D=\(b^{2}-4ac\) is less than 0:

D= 0-(4*2*18)   --> which is clearly negative

When D is less than 0, the equation has no real number solutions.

Therefore, \(2x^{2}+18=0\) has no real roots

Answer:

Step-by-step explanation:

0 has no roots so thats one, and im just trying to complete a challenge so sorry if im wrong :( but make other person brainliest they did good job :)