Please someone helpppp!!!

Answer:

0.82%

Step-by-step explanation:

First find the z-score.

z = (x − μ) / σ

z = (72 − 60) / 5

z = 2.4

Use a chart or calculator to find the probability.

P(Z > 2.4) = 1 − P(Z < 2.4)

P(Z > 2.4) = 1 − 0.9918

P(Z > 2.4) = 0.0082

Hence, the probability of time does it take longer than [tex]72[/tex] minutes if the standard deviation is [tex]5[/tex] minutes is [tex]0.82[/tex]%.

What is the probability?

Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.

Here given that,

If an hourglass takes an average of one hour to empty a full cycle.

Now, First find the z-score.

[tex]z = (x-[/tex] μ[tex])[/tex]/σ

[tex]z = \frac{72 - 60}{5}\\z = 2.4[/tex]

Now, using the calculator to find out the probability.

[tex]P(Z > 2.4) = 1 - P(Z < 2.4)\\\\P(Z > 2.4) = 1 - 0.9918\\\\P(Z > 2.4) = 0.0082[/tex]

Thus,

[tex]0.0082(100)=0.82[/tex]%

Hence, the probability of time does it take longer than [tex]72[/tex] minutes if the standard deviation is [tex]5[/tex] minutes is [tex]0.82[/tex]%.

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Answer: 20

Step-by-step explanation:

Hope helps

Answer:

7 + 9 - (-3) - 1 + 2

16 - (-3) - 3

19 - 3

16

Answer:

6t

Step-by-step explanation:

t times 6 = t*6, which can be written as 6t (usually numbers go before the variables)

Given parameters:

  Evaluate;

             [tex]\sqrt[4]{(16)^{-2} }[/tex]

Now let us solve this;

           [tex]\sqrt[4]{(16)^{-2} }[/tex];

     the fourth root can be expressed  as the power of    [tex]\frac{1}{4}[/tex] ;

    [tex]\sqrt[4]{(16)^{-2} }[/tex]   =     [(16)⁻²][tex]^{\frac{1}{4} }[/tex]

                     =  (16)[tex]^{-2 x \frac{1}{4} }[/tex]

                      = (16)[tex]^{\frac{-1}{2} }[/tex]

                      =     [tex]\frac{1}{16^{\frac{1}{2} } }[/tex]

                     =    [tex]\frac{1}{\sqrt{16} }[/tex]

                     =  [tex]\frac{1}{4}[/tex]

The solution is [tex]\frac{1}{4}[/tex]

Answer:

The commutative property  :))

Answer:

A. 22,075.06

B. 17,422.44

Answer:

A. $22,074.94

B. $12,422.44

Step-by-step explanation:

28,485.34 25,405.56

- 6,410.28 - 7, 983.12

= 22,074.94 = 12,422.44

Answer:

The correct counterexample is [tex]b \leq 6[/tex].

Step-by-step explanation:

We proceed to demonstrate the validity of given implication by direct demonstration and use of our knowledge in algebra:

1) [tex]a + b \leq 8[/tex] Given.

2) [tex]a = 2[/tex] Given.

3) [tex]2+b \leq 8[/tex] 2) in 1)

4) [tex]2 + b +(-2) \leq 8 +(-2)[/tex] Compatibility with addition.

5) [tex]b+[2+(-2)]\leq 6[/tex] Commutative and associative properties/Definition of subtraction

6) [tex]b \leq 6[/tex] Existence of additive inverse/Modulative property/Result.

This contradicts what implies the given proposition. The correct counterexample is [tex]b \leq 6[/tex].

Answer:

it's C

Step-by-step explanation:

The correct answer is: The equation y = 54.16 + 0.87x is called the least-squares regression line because it makes the sum of the squared residuals as small as possible.

The least-squares regression line is a line that best fits the given data points by minimizing the sum of the squared residuals. Residuals are the vertical distances between the actual data points and the predicted values on the regression line. By minimizing the sum of the squared residuals, the line is able to provide the best overall fit to the data.

Therefore, the least-squares regression line aims to minimize the differences between the predicted values and the actual data points, making the sum of the squared residuals as small as possible.

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Answer:

8a²+8a+12b = 8a²+8a+12b

Step-by-step explanation:

first, expand the brackets

4a + 4a + 12a² + 8b + 4b - 4a²

then, collect like terms

8a + 8a² + 12b

then, rearrange

8a² + 8a + 12b

Answer:

x=3

Step-by-step explanation:

Answer:

35%

Step-by-step explanation:

1,000 + 35% = 1,350

Answer:

g(x) = 4x + 2

Step-by-step explanation:

g(x) = f(x) + 5 = 4x - 3 + 5 = 4x + 2

Answer:

Hello thanks for the question, if my answqers are correcrt pls mark brain liest  

1. 56 n − 35

2. − 40 p + 13

3. − 77 k − 40

Step-by-step explanation:

Answer:

x=42

Your welcome!

Answer:

x=42

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    4/7*x+5/14*x-(39)=0

Simplify 5/14

((4/7• x) +  (5/14 • x)) -  39  = 0

Simplify 4/7

  4         5x    

 ((— • x) +  ——) -  39  = 0

   7         14    

Find the Least Common Multiple

     The left denominator is :       7

     The right denominator is :       14

       Number of times each prime factor

       appears in the factorization of:

Prime

Factor   Left

Denominator   Right

Denominator   L.C.M = Max

{Left,Right}

7 1 1 1

2 0 1 1

Product of all

Prime Factors  7 14 14

     Least Common Multiple:

     14

Calculate multipliers for the two fractions

   Denote the Least Common Multiple by  L.C.M

   Denote the Left Multiplier by  Left_M

   Denote the Right Multiplier by  Right_M

   Denote the Left Deniminator by  L_Deno

   Denote the Right Multiplier by  R_Deno

  Left_M = L.C.M / L_Deno = 2

  Right_M = L.C.M / R_Deno = 1

Calculate multipliers for the two fractions

   Denote the Least Common Multiple by  L.C.M

   Denote the Left Multiplier by  Left_M

   Denote the Right Multiplier by  Right_M

   Denote the Left Deniminator by  L_Deno

   Denote the Right Multiplier by  R_Deno

  Rewrite the two fractions into equivalent fractions

Two fractions are called equivalent if they have the same numeric value.

For example :  1/2   and  2/4  are equivalent,  y/(y+1)2   and  (y2+y)/(y+1)3  are equivalent as well.

To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier.

  L. Mult. • L. Num.      4x • 2

  ——————————————————  =   ——————

        L.C.M               14  

  R. Mult. • R. Num.      5x

  ——————————————————  =   ——

        L.C.M             14

Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

4x • 2 + 5x     13x

———————————  =  ———

    14          14

 13x    

 ——— -  39  = 0

 14    

 Subtracting a whole from a fraction

Rewrite the whole as a fraction using  14  as the denominator :

         39     39 • 14

   39 =  ——  =  ———————

         1        14  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding up the two equivalent fractions

13x - (39 • 14)     13x - 546

———————————————  =  —————————

      14               14    

 Pull out like factors :

  13x - 546  =   13 • (x - 42)

13 • (x - 42)

 —————————————  = 0

      14  

 When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 13•(x-42)

 ————————— • 14 = 0 • 14

    14    

Now, on the left hand side, the  14  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  13  •  (x-42)  = 0

Solve :    13   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solve  :    x-42 = 0

Add  42  to both sides of the equation :

                     x = 42

Please Give me Brainliest

Answer

Step-by-step explanation:

Its A

HI um yeaaaa so do u still need help and um this is taylor megan is at school and aaahhhhh umm yea so................... bye bye

5555555999933333888822228448845657483921234567

Answer:

28a20b24

Step-by-step explanation:

(7a5b6)4

= (7a*4)(5b*4)(6*4)

= 28a20b24

Answer:

Step-by-step explanation:

The sum of the 3rd and 8th term is:

                                                            [tex]a_3+a_8=1\\\\a_1+2d+a_1+7d=1\\\\\underline{2a_1+9d=1}[/tex]

The sum of the first seven terms is 35:

                                                           [tex]S_7=35\\\\\dfrac{a_1+a_7}2\cdot7=35\\{}\qquad\quad^{\div7\qquad\div7}\\ \dfrac{a_1+a_1+d}2=5\\{}\qquad\qquad^{\cdot2\qquad\cdot2}\\2a_1+6d=10\\{}\qquad\ ^{\div2\qquad\div2}\\a_1+3d=5\\{}\quad\ ^{-3d\quad\ -3d}\\a_1=5-3d[/tex]

[tex]2a_1+9d=1\\\\2(5-3d)+9d=1\\\\10-6d+9d=1\\{}\qquad\qquad^{-10\quad-10}\\{}\qquad3d=-9\\{}\qquad^{\div3\qquad\div3}\\{}\qquad d=-3\\\\\\a_1=5-3(-3)=5+9=14[/tex]

Answer:

60%

Step-by-step explanation:

Answer:

C. 60%

Step-by-step explanation:

Answer:

[tex]c=\frac{82}{3}-\frac{4}{3}d[/tex]

Step-by-step explanation:

1) Set up an equation

Let c be the number of CDs Nakisa bought.

Let d be the number of DVDs Nakisa bought.

[tex]328=12c+16d[/tex]

Explanation: Each CD costs $12 and each DVD costs $16. Nakisa spent $328 altogether, which means $12c+$16d is equal to $328.

The question is asking for the number of CDs that Nakisa bought, so our goal is to isolate c in the equation above.

2) Isolate c

[tex]328=12c+16d[/tex]

Subtract both sides by 16d

[tex]328-16d=12c+16d-16d\\328-16d=12c[/tex]

Divide both sides by 12

[tex]\frac{328-16d}{12}=\frac{12c}{12} \\\frac{82}{3}-\frac{4}{3}d=c[/tex]

[tex]c=\frac{82}{3}-\frac{4}{3}d[/tex]

I hope this helps!

Answer:

Las coordenadas del punto son P([tex]2.\overline 3[/tex], 1)

Step-by-step explanation:

Las coordenadas de los extremos de la pieza de madera son A (5, 3) y B (-3, -3)

El punto, P, en el que se agregará la muesca = 1/3 de la longitud de AB

Por tanto, las coordenadas del punto, tomando A como punto de referencia, se dan como sigue;

P (5 + (-3 - 5) × 1/3, 3 + (-3 - 3) × 1/3) = P([tex]2.\overline 3[/tex], 1)

Las coordenadas del punto son P([tex]2.\overline 3[/tex], 1).

Answer:

W = kq1q2 / r

Step-by-step explanation:

W varies jointly as the product of q1 and q2 and inversely as radius r

Product of q1 and q2 = q1q2

W = (k*q1"q2) / r

W = kq1q2 / r

Where,

W = work

q1 = particle 1

q2 = particle 2

r = radius

k = constant of proportionality

The answer is W = kq1q2 / r

Using proportions, it is found that the formula is:

[tex]W = k\frac{q_1q_2}{r}[/tex]

Then, the formula is:

[tex]W = k\frac{q_1q_2}{r}[/tex]

A similar problem is given at https://brainly.com/question/18131403

Answer:

Step-by-step explanation:

x+3*2=12-2*2

x+6=12-4

x+6=8

  -6 -6

x=2

Answer:

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

Slope-intercept form is described as y=mx+b, where m = the slope, and b = the y-intercept. Since you are given these two numbers, just plug them into the slope-intercept form. This gives you y=5x-3.

Answer:

37 1/3

Step-by-step explanation:

10 2/3 * 3.5=37 1/3

Answer:

the answer is 16/7/76

Step-by-step explanation:

ucjss

Answer:

The answer would be 48 since it would be 4 x 12

Answer:

$15

Step-by-step explanation:

If the 5 people where each paying $12 to rent the equipment, that means the cost of the equipment can be found multiplying 5 and 12 to get 60. Now that we know that the cost of the equipment is $60, if one person bailed out, there are now 4 people to rent it. You can find how much each person pays if they each pay the same amount by dividing 60 by 4. Once you do                      $60 ÷ 4 people = 15. So each person pays $15.

I hope this helps :)

Put a finger up. You have 1. Add 1 another finger by putting another finger up. If you count how many there are you get 2.

So 1+1 = 2.

Seriously though... why ask this.