Please help
Which of the following...

Answer:

[tex]x[/tex] = 9

Step-by-step explanation:

We need to find [tex]x[/tex] which will make an equivalent fraction statement.

[tex]\frac{5}{x} = \frac{30}{54}[/tex]

5 x 6 = 30

[tex]x[/tex] x 6 = 54 (to find [tex]x[/tex] we should do 54 ÷ 6 which = 9)

So:

[tex]\frac{5}{6} = \frac{30}{54}[/tex]

[tex]x[/tex] = 9

hope this helps :)

Answer:

x = -1.4

Step-by-step explanation:

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

-3x + (-3*4) = 2x - 5

The mistake was in the above equation where -3 should be multiplied with 4.

-3x -12 = 2x -5

5 -12 = 2x+3x

-7 = 5x

x = -7/5 = - 1.4

Answer:

a)  ( 31.92 < μ < 33.88 )  

The confidence interval is not very different from the confidence interval given in the question

b) ( 31.74 ,  34.66 )

Step-by-step explanation:

n = 250

x ( mean ) = 32.9

std = 6.9

95% confidence interval

df = n - 1 = 250 - 1 = 249

a) construct confidence interval estimate

calculate for the margin of error

= [tex]t_{0.05/2} ,_{250-1} ( \frac{s}{\sqrt{n} } )[/tex] ( using excel function:  T.INV.2T(0.025,249) )

= 2.255 ( 6.9 / 15.81 )

= 0.98

Hence the confidence interval for the population

= ( x - 0.98 < μ < x + 0.98 )

= ( 31.92 < μ < 33.88 )  

The confidence interval is not very different from the confidence interval given in the question

b) when n = 19

x = 33.2 and std = 2.6

margin of error = [tex]t_{0.05/2} ,_{19-1} ( \frac{s}{\sqrt{n} } )[/tex] = 2.45 * ( 2.6 / 4.36 )  = 1.46

confidence interval

= ( 33.2 - 1.46 , 33.2 + 1.46 )

= ( 31.74 ,  34.66 )

Answer:

Alfred will not arrive in his city at 8 PM, but he will arrive at approximately 8:20 PM.

Step-by-step explanation:

Since Alfred departs from NAMPO Park at 18:45 and travels to Sasolburg at an average speed of 88 km / h, and he calls his wife to inform her that he will arrive in Sasolburg at 8 pm, to determine if his estimate is correct the following calculations must be performed:

The shortest route from Nampo Park to Sasolburg in South Africa is 139 km via Route 59.

8 PM = 20:00

20:00 - 18:45 = 1:15

139/88 = 1.57

60 x 0.57 = 34.74

Thus, Alfred will not arrive in his city at 8 PM, but he will arrive at approximately 8:20 PM.

Answer:

9w + 7 = 5x

hope this answer helps you.....

Answer:

E) Assuming that the location of where a person lives and who that person plans to vote for are independent, there is a 2 percent chance of finding a test statistic that is 9.84 or greater.

Step-by-step explanation:

Chegg

9514 1404 393

Answer:

  (d)  x-4

Step-by-step explanation:

If we assume your answer choices are ...

  (a) 5 -x = 5 -4 = 1

  (b) 1/2x = 1/2(4) = 2

  (c) x +1 = 4 +1 = 5

  (d) x -4 = 4 -4 = 0

Then the last choice (d) x -4 has the smallest value at x=4.

Answer:

Where is the paper?

Step-by-step explanation:

Answer:

100 units

Step-by-step explanation:

((6+4)^2+(-3-7)^2)^1/2

100+100^1/2

10000^1/2

100 units

Answer:

A. (-2,1)

Step-by-step explanation:

Answer:

10 shouldn't it be 10 days

Step-by-step explanation:

hope it helps

Answer:

1/4 plus 1/2, and 3/8 plus 3/8

Subtract 6 from the total then divide by 2.

34-6 = 28

28/2 = 14

The length of the other two sides are 14 cm each

Answer:

24000

Step-by-step explanation:

23809=24000

Answer:

First box, 0.8 - Green

Second Box - 0.4 - not green

Last box ( Bottom) - 0.7 - not green

b) 0.8

c) 0.3

d) 0.8 X 0.6 = ?? ( use calc)

e) (0.8 X 0.4 ) + (0.2 x 0.7) = Ans

Step-by-step explanation:

Just know probability will always add up to 1 no mater what!!!

Answer:

~600 votes

Step-by-step explanation:

Notice how 900 is a multiple of 3. Multiplying by 2/3 is the same as saying as divide the total by 3, then multiply that result by 2. Thusly, 900/3=300 and 300*2=600. Therefore, you should expect around 600 votes.

If I helped, a brainliest would be greatly appreciated!

Answer: the answer is 104

Step-by-step explanation:

Answer:

104

Step-by-step explanation:

Answer:

Use normalcdf ( 1.75, 1.85, 1.84, 0.07 )

Doc and Marty should have laptimes between 1.75 and 1.85 approximately 45.75% of the time.

Step-by-step explanation:

Answer:

[tex]Concentration = 8.26kg/m^3[/tex]

Step-by-step explanation:

Given

  [tex]V = 440000L[/tex] --- volume of tank

[tex]m = 10,000 kg[/tex] --- solid mass

[tex]r = 40000L/hr[/tex] --- outflow rate  

Required

Determine the concentration at the end of 4 hours

First, calculate the amount of liquid that has been replaced at the end of the 4 hours.

[tex]Amount = r * Time[/tex]

[tex]Amount = 40000L/hr * 4hr[/tex]

[tex]Amount = 40000L * 4[/tex]

[tex]Amount = 160000L[/tex]

This implies that, over the 4 hours; The tank has 160000 liters of liquid out of 440000 liters were replaced

Calculate the ratio of the liquid replaced.

[tex]Ratio = \frac{Amount}{Volume}[/tex]

[tex]Ratio = \frac{160000L}{440000L}[/tex]

[tex]Ratio = \frac{16}{44}[/tex]

[tex]Ratio = \frac{4}{11}[/tex]

Next, calculate the amount of solid left.

[tex]Amount (Solid)= Ratio * m[/tex]

[tex]Amount (Solid)= \frac{4}{11} * 10000kg[/tex]

[tex]Amount (Solid)= \frac{40000}{11}kg[/tex]

[tex]Amount (Solid)= 3636kg[/tex]

Lastly, the concentration is calculated as:

[tex]Concentration = \frac{Amount (Solid)}{Volume}[/tex]

[tex]Concentration = \frac{3636kg}{440000L}[/tex]

Convert L to cubic meters

[tex]Concentration = \frac{3636kg}{440000* 0.001m^3}[/tex]

[tex]Concentration = \frac{3636kg}{440m^3}[/tex]

[tex]Concentration = 8.26kg/m^3[/tex]

Answer:

this is the answer

Step-by-step explanation:

hope it helped!!!

Answer:

138°

Step-by-step explanation:

69X2=138

Answer:

6808 yds

Step-by-step explanation:

First find the area in black in total

190 x 48 = 9120

then find the area of the two squares

34 x 34 = 1156

1156 x 2 = the two square combined = 2312

subtract the total area in black with the area of the combined squares

9120 - 2312 = 6808

Hoped this helped.

Answer:

x= 69 - 55

×=14

I think this helpful for you

Answer:

x = 124 degree

Step-by-step explanation:

Sum of all interior angles of triangle = 180

69+55= 124

Therfore third angle, 180-124= 56

Linear pair= 180

180-56= 124 degree

therefore x= 124 degree

Mark as brainliest

Answer: B) 75 km/h (from this answer my brother told and he good at math so I hope this is Correct.)

Answer:

$101.03

Step-by-step explanation:

two ways to solve:

95 x 1.0635=101.03

or

95 x .0635=6.03 sales tax paid

sales price 95 + sales tax 6.03 = total paid $101.03