Solve the equation 18t – 8 = 1 for t.

A. 1/6
B. 1/4
C. 1/2
D. 2

Answer:

hdisiejehe

Step-by-step explanation:

step sister

Answer:

Step-by-step explanation:

Answer:

1. b

2.c

3.a

Step-by-step explanation:

welcome

Answer:

1) b: 1,176 sc

2) c: 100 sf

3) a: 225.36

Step-by-step explanation:

Using a TI-83, TI-83 Plus, or TI-84 Population standard deviation is 56.4 and Population variance is 3178.5 .

To calculate the population standard deviation and variance using a TI-83, TI-83 Plus, or TI-84 calculator, we can use the following steps:

Enter the data into a list on the calculator. To do this, press the STAT key, then select Edit. Enter the data into L1.

Calculate the sample mean by pressing STAT, then CALC, then 1-Var Stats. Make sure L1 is selected as the list, then press ENTER.

Find the population variance by pressing STAT, then CALC, then 2-Var Stats. Make sure L1 is selected as the list, then press ENTER. The variance will be displayed as sX².

Take the square root of the population variance to find the population standard deviation. To do this, press the MATH key, then select PRB, then select 5:√(. Enter the population variance, then press ENTER.

Using this method, we find that the population standard deviation is approximately 56.4 and the population variance is approximately 3178.5.

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Complete question is:

A statistics professor gives a survey to each of the 10 students in an introductory statistics course. The survey asks the students how many text messages they think they sent yesterday. The data are included below. Use a TI-83, TI-83 Plus, or TI-84 to calculate the population standard deviation and the population variance. Round your answers to one decimal place .

Texts sent yesterday: 29 211 130 21 5 21 19 67 60 95

Answer:

45

Step-by-step explanation:

Y = forty percent of blank to make 18

18 = 40/100 x Y

Y = 18 x 100/40

Y = 18 x 100 divided by 40

Y = 45

Answer:

the answer its 44=0

Step-by-step explanation:

18y-6y+22=11(y-2)+y1

We move all terms to the left:

18y-6y+22-(11(y-2)+y1)=0

We add all the numbers together, and all the variables

12y-(11(y-2)+y1)+22=0

We calculate terms in parentheses: -(11(y-2)+y1), so:

11(y-2)+y1

We add all the numbers together, and all the variables

y+11(y-2)

We multiply parentheses

y+11y-22

We add all the numbers together, and all the variables

12y-22

Back to the equation:

-(12y-22)

We get rid of parentheses

12y-12y+22+22=0

We add all the numbers together, and all the variables

44=0

are not solution for this equation

Hope helps you and have a great day !

Given:

Santa started working at $6 an hour.

He did such a good job that he got a 20% raise.

So, the increase of the earning per hour = 20% of 6

so, the amount of the increase =

So, the raise = $1.2 per hour

The new hourly payment = 6 + 1.2 = $7.2 per hour

Answer: To solve this, you'll need to find a common denominator and simplify the equation before solving for x.

The answer is: x = 23/5 or 4.6

The dimensions we will tell the shop to use are ⇒ Volume =  10 x 10 x 5 foot

The surface area of the box = \(225\) \(ft^{2}\)

Weight of the metal = 1125 kg

According to the question,

Given value = \(500\) \(ft^{3}\) tanks is to be built which has to be a square-based rectangle steel holding tank.

For this, we have to know the total surface area of the box,

Surface area (A) = 4 x sides of the rectangle + square base -- equation 1

Let's take the width of the square base = p

And let height = h

Since we know that,

Rectangle sides = p x h

Square base ⇒ p x p = \(p^{2}\)

Substituting these values in equation 1,

Surface area ( A ) = 4 x ( p x h ) + \(p^{2}\) ---- equation 2

The formula for calculating the volume of the box,

V = p x p x h

V = \(p^{2}\) x h --- equation 3

Referring to the question that the value of the volume is already given such that volume = \(500\) \(ft^{3}\)

So, V = \(500\) \(ft^{3}\)

Putting the value of V in equation 3,

500 = \(p^{2}\) x h

h = \(\frac{500}{p^{2} }\) ---- equation 4

Substituting the value of h from equation 4 to equation 2,

A = 4 x ( p x \(\frac{500}{p^{2} }\) ) + \(p^{2}\)

⇒ A = \(\frac{2000}{P}\) + \(p^{2}\)

We will be taking the derivative of the above equation,

⇒ A' = - \(\frac{2000}{p^{2} }\) + 2p

Now we will be minimizing A,

⇒ 0 = - \(\frac{2000}{p^{2} }\) + 2\(p\)

⇒ \(\frac{2000}{p^{2} }\) = 2\(p\)

⇒ 2000 = 2\(p^{3}\)

⇒ 1000 = \(p^{3}\)

⇒ p = \(\sqrt[3]{1000}\)

⇒ p = 10 foot

Substituting the value of p in equation 4,

⇒ h = \(\frac{500}{10^{2} }\)

⇒ h = \(\frac{500}{100}\)

⇒ h = 5 foot

Substituting values in the area of the square box,

A = 4 x (10 x 5) + \(5^{2}\)

A = 200 + 25

A = 225 \(ft^{2}\)

The weight of the metal,

⇒ weight = A x weight per square foot

⇒ weight = 225 x 5

⇒ weight = 1125 kg

Therefore, The dimensions we will tell the shop to use are ⇒ Volume =  10 x 10 x 5 feet

The surface area of the box = 225 \(ft^{2}\)

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Answer:

Step-by-step explanation:

standard deviation σ =5000

Mean μ = 36500

X = 30000

Probability that tire fails to reach 30000 miles

P(< 30000) = P( z < (30000-36500) / 5000 )

= P ( z < - 1.3 )

= .0968 ( from z table )

refund per mile = .01

refund for 30000 mile = .01 x 30000 = 300

expected cost of promotion

= 300 x .0968

= 29.04

b )

refund of $50 is equivalent to shortage of milage by 50 / .01 = 5000 miles

Probability of miles less than 30000 - 5000 = 25000

P ( X < 25000 ) = P ( z < (25000 - 36500) / 5000 )

P ( z < - 2.3 )

= 0.0107 Answer .

Answer: 4

Step-by-step explanation:

Answer:

don't know SORRY but I will try it

48 : 30 = 24 : 15

            = 8 : 5

Answer: 27

Step-by-step explanation:

Given

During 3 days the cat was catching mice

Suppose the first-day joy caught x mice

So, on the second day, it is x+3

on the third day, joy catches twice as many mice as on the first day i.e. 2x

or we can also write, no of mice caught on the second day plus 3 is equal to no of mouse caught on the third day

\(\Rightarrow x+3+3=2x\\\Rightarrow x=6\)

In three day time, it is

\(\Rightarrow x+x+3+2x\\\Rightarrow 4x+3\\\Rightarrow 4\times 6+3=27\)

Answer: The missing values in the ratio table will be 0.666 and 5.33 inches.

Step-by-step explanation:

As the ratio of the terms is equal. The value of x and y is ,

2/3 = x/1

x=2/3

x=0.66 inches

In order to obtain y,

2/3 = y/8

y=2×8/3

y=16/3

y=5.33 inches.

Answer:  6 * 24 = 144 ways.

Step-by-step explanation:

Solution:

Given word => DANGER.

The condition is that vowels can't occupy odd places so, we will let them occupy even places.

A total number of arrangements will be = 6 * 24 = 144 ways.

Answer: 6x24 = 144 ways.

hmmm ok, so the advertisement says that original price is 106 and is on a 6% discount, ok, how much will that be?

\(\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{6\% of 106}}{\left( \cfrac{6}{100} \right)106}\implies 6.36\)

so, if the item is discounted by 6%, that'd be then 106 - 6.36 = 99.64, but they are saying they have it for 100?  something fishy is going on.

The area of the Shaded region, when the frame is 1 unit wide, is 20 square units.

The area of the shaded region when one rectangle is framed within another and the frame has a width of 1 unit, we need to calculate the difference between the areas of the outer rectangle and the inner rectangle.

the dimensions of the outer rectangle as length and width, and the dimensions of the inner rectangle as length' and width'. Based on the information provided, the length and width of the outer rectangle are 5 and 7 units, respectively.

The dimensions of the inner rectangle can be found by subtracting twice the width of the frame (1 unit) from the dimensions of the outer rectangle:

Length' = length - 2 * frame width = 5 - 2 * 1 = 3 units

Width' = width - 2 * frame width = 7 - 2 * 1 = 5 units

Now we can calculate the areas of the outer and inner rectangles:

Area of the outer rectangle = length * width = 5 * 7 = 35 square units

Area of the inner rectangle = length' * width' = 3 * 5 = 15 square units

Finally, to find the area of the shaded region, we subtract the area of the inner rectangle from the area of the outer rectangle:

Area of shaded region = Area of outer rectangle - Area of inner rectangle = 35 - 15 = 20 square units

Therefore, the area of the shaded region, when the frame is 1 unit wide, is 20 square units.

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Answer:

The pack weighs 30.16 ounces

Step-by-step explanation:

Answer:

See below.

Step-by-step explanation:

You have eight bars, right?

And each bar weighs 3.77 oz?

8 x 3.77 = 30.16 oz

or, if I get this right can I get brainliest, 855.02162 grams.

The equation of the direct variation is expressed as: y = 1/8x.

The equation of a direct variation between two variables, say x and y, is expressed as y = kx, where k is the constant of proportionality, if y varies directly as x.

Therefore, substitute y = 2 and x = 16 into y = kx to find the value of k:

2 = k(16)

Divide both sides by 16

2/16 = k

1/8 = k

k = 1/8.

To write the equation of the direct variation, substitute k = 1/8 into y = kx:

y = 1/8x.

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Alex's rate of commission is approximately 10.52%.

To find Alex's rate of commission, we can divide the amount he earned by his total sales.

Alex earned $21,563 on his total sales of $204,865.

So, his rate of commission can be calculated as:

Rate of commission = (Amount earned / Total sales) * 100%

Substituting the given values:

Rate of commission = ($21,563 / $204,865) * 100%

Using a calculator, we can evaluate this expression:

Rate of commission ≈ 0.1052 * 100%

Rate of commission ≈ 10.52%

Therefore, Alex's rate of commission is approximately 10.52%.

This means that for every dollar of sales he makes, he earns a commission of 10.52 cents.

It's important to note that the rate of commission can vary from one salesperson to another and may be negotiated between the salesperson and the company. In Alex's case, his rate of commission is 10.52% based on his performance in November.

By knowing his rate of commission, Alex can calculate his earnings for future sales based on the sales amount he generates. It also allows him to evaluate his performance and set targets to achieve higher commission earnings.

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Answer: C is the answer

How the ffffffffffffffffffffffffffffffffffffffffff

Answer:

1) Since the calculated value of t = -0.241640 does not fall in the critical region so we accept H0 and conclude that there is not enough evidence to show the difference in the mean overall distance of brands.

2) The 95% CI  is [-18.587; 1.01242]

Step-by-step explanation:

The given data is

Brand 1     257      276     260   262   287   271    260  265   283     271

Brand 2     273     281      279    275   271    270   263   267   263    268

Difference d -16   -5       -19       -13     -16    - 01       -3     -2      20     3 ∑ -98

d²               256     25     361      169    256     1     9      4     400      9 ∑1490

1) Let the hypotheses be

H0: ud= 0 against the claim Ha: ud ≠0

2) The degrees of freedom = n-1= 10-1= 9

3) The significance level is 0.05

4) The test statistic is

t= d`/sd/√n

5) The critical region is ║t║≤ t (0.025,9) = ±2.262

Calculations

6) d`= ∑di/n= -98/10= -9.8

Sd²= ∑(di-d`)²/n-1 = 1/n-1 [∑di²- (∑di)²n]

= 1/9[1490-(-9.8)²/10] =1/9 [1490-9.604]= 164.4884

Sd= 12.825

Therefore

t= d`/ sd/√n

t= -9.8/ 12.825/√10

t= -0.764132/3.16227= -0.241640

7) Conclusion:

1) Since the calculated value of t = -0.241640 does not fall in the critical region so we accept H0 and conclude that there is not enough evidence to show the difference in the mean overall distance of brands.

2) The confidence interval for the difference of two samples can be calculated by

d ` ± td sd/√n

Putting the values

-9.8 ±2.262* 12.825/√10

[-18.587; 1.01242]

Answer:

144 km

Step-by-step explanation:

Answer:

I believe it's true

Step-by-step explanation:

I hope this helps

Esta pregunta esta incompleta

Pregunta completa

El señor Juan tiene una tienda de abarrotes y sus ventas son al mayoreo y al menudeo. La semana pasada recibió dos toneladas de azúcar en 40 sacos de 50 kg cada uno.

Con el azúcar de un saco empacó bolsas de 250 cada una.¿cuantas bolsas en paco​

Answer:

200 bolsas.

Step-by-step explanation:

Se nos dice en la pregunta,

La semana pasada recibió dos toneladas de azúcar en 40 bolsas de 50 kg cada una.

Esto significa

1 bolsa = 50 kg de azúcar.

1 kg = 1000 gramos

50 kg = 50 × 1000 gramos

= 50000 gramos

Por tanto, 1 bolsa contiene = 50000 gramos de azúcar.

A partir de la pregunta anterior, se nos pregunta cuántas bolsas de azúcar obtendría si cada bolsa contuviera 250 gramos.

Por lo tanto:

50000/250 gramos

= 200 bolsas.

Por lo tanto, obtendría 200 bolsas.