Find the value when x = 2 and y = 3.x ^-3y^ -3A. 54B. 216C. 1/216

Answer:

B.

Step-by-step explanation:

B is the least expensive

Answer:

A= 30 sq. cm

Step-by-step explanation:

We want to find the area of both triangles seprately than add them together. For the area of a traingle, we use the equation 1/2 base times height. For triangle ABE we do this:

\(A = \frac{1}{2} (12)(4)\)

\(A = (6) (4)\)

\(A = 24\)

For triangle BDC, we do this:

\(A = \frac{1}{2} (6) (2)\)

\(A = (3) (2)\)

\(A=6\)

Now we have to add both areas ot get A=30 sq cm

Answer:

x=12

Step-by-step explanation:

Simplifying

30 + 4x + 2 = 8 + 6x

Reorder the terms:

30 + 2 + 4x = 8 + 6x

Combine like terms: 30 + 2 = 32

32 + 4x = 8 + 6x

Solving

32 + 4x = 8 + 6x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-6x' to each side of the equation.

32 + 4x + -6x = 8 + 6x + -6x

Combine like terms: 4x + -6x = -2x

32 + -2x = 8 + 6x + -6x

Combine like terms: 6x + -6x = 0

32 + -2x = 8 + 0

32 + -2x = 8

Add '-32' to each side of the equation.

32 + -32 + -2x = 8 + -32

Combine like terms: 32 + -32 = 0

0 + -2x = 8 + -32

-2x = 8 + -32

Combine like terms: 8 + -32 = -24

-2x = -24

Divide each side by '-2'.

x = 12

Simplifying

x = 12

The axis of symmetry is at x = 1, the domain is (-∞, +∞), the y-intercept c is at 7 and x intercept is not applying .

A parabolic function is one that satisfies the formula f(x) = ax2 + bx + c and, when represented graphically in two dimensions, has the shape of a parabola. Any quadratic equation with just a second degree in x is the equation for a parabolic function.

The following characteristics define a basic parabola:

Thus, from the given graph the value are obtained as:

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Answer:

I think it is $0.50 per pound

Step-by-step explanation:

Hope this helps

Answer:

Barometer i think im not sure

Step-by-step explanation:

Pressure is a mechanical (non-electrical and non-magnetic) measure. All mechanical measures can be derived from just three basic mechanical units. Which three we use is actually arbitrary. This means that using three we can produce or define all other mechanical measures by multiplying or dividing some combination of the chosen three.

Most measuring systems use time, length, and mass as the basic three in which case pressure would be mass / (time * time * length * length). Compare that with kilogram per (meter*meter * second*second) which is also called a Pascal.

Another measuring system might use time, length, and force as the three basic measures. Here mass is omitted in place of force. Nothing is lost because mass and force can be written in terms of the other with the help of time and length. In this case pressure would be force / (length*length). Compare this with Newton per meter*meter which also defines a Pascal.

How pressure is measured in practice is another good question. The standard method is to use some device that employs a medium to compare the unknown pressure to some known familiar pressure. Mercury tubes illustrate this nicely and are still used in laboratories. They work because mercury is a very dense fluid. A lighter fluid can push upon and move a column of mercury but cannot pass through it.

Measuring the movement of mercury when a known pressure is applied to one end reveals the pressure at the other end. The persistence of millimeters of mercury (mmHg) as a unit for reporting pressure is testament to this method. Other pressure gages work by employing something like springs or strain sensors calibrated to mimic the readings that a mercury tube would report.

Answer:

8

Step-by-step explanation:

Thanks I was reading it like "what?" lma oo

But thanks Have a good day!!

The mass of one art book is 0.8 kg, and the mass of one biology book is 0.6 kg

Let's denote the mass of one art book by "a" and the mass of one biology book by "b".

From the given information, we have two equations:

6a + 4b = 7.2 (equation 1)

2a + 3b = 3.4 (equation 2)

We can solve for "a" and "b" by using any method of solving linear equations, such as substitution or elimination.

Here, we'll use elimination method. Multiplying equation 2 by 3 and subtracting it from equation 1 multiplied by 2, we get:

12a + 8b - (6a + 9b) = 14.4 - 10.2

6a - b = 4.2 (equation 3)

Multiplying equation 2 by 2, we get:

4a + 6b = 6.8 (equation 4)

Multiplying equation 3 by 6, we get:

36a - 6b = 25.2 (equation 5)

Adding equations 4 and 5, we get:

40a = 32

a = 0.8 kg

Substituting this value of "a" in equation 2, we get:

2(0.8) + 3b = 3.4

1.6 + 3b = 3.4

3b = 1.8

b = 0.6 kg

Therefore, the mass of one art book is 0.8 kg, and the mass of one biology book is 0.6 kg.

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Answer:

-60

Step-by-step explanation:

-6 √100

We know the square root of 100 is 10 ( 10x10=100), so replace √100 with 10, and then multiply:

-6(10) = -60

Parallel lines have the same slope, so since the slope of the given line is -74, the slope of the line we want to find is also -74.

Substituting into point-slope form,

\(y+2=-74(x-4)\\\\y+2=-74x+296\\\\\boxed{y=-74x+294}\)

Answer:

The percentage in mark up is 503.56%.

Step-by-step explanation:

The percentage in markup is the change(retail - cost) divided by the initial cost, and multiplied by 100%.

In this question:

Cost: 1.49

Change: 8.99 - 1.49 = 7.5

Percentage change:

(7.5*100%)/1.49 = 503.56%.

The percentage in mark up is 503.56%.

Answer:

A - C(-3, -2), D(1, -2)

Step-by-step explanation:

Answer:

it is 6

Step-by-step explanation:

2 and 6 are the denominators and the least common denominator is the number in which 2 & 6 can go in without leaving a remender and 6 is that number

Answer:

The LCD of the fractions 1/6 and 1/2 is 6

Step-by-step explanation:

The LCD of 2 or more fractions is the least common multiple of the denominators.

The given fractions are 1/2 and 1/6. The denominators are 2 and 6

List the multiples of each denominator:

Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, …

Multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, ..

The least common multiple that the two share is 6.

So the LCD of 1/2 and 1/6 is 6.

Miguel will need to deposit approximately $3,261.25 into the annuity each year for 8 years in order for the annuity to have a total value of $24,000.

What is the annuity?

An annuity is a contract between you and an insurance company that requires the insurer to make payments to you, either immediately or in the future. You buy an annuity by making either a single payment or a series of payments.

We can use the formula for the future value of an annuity:

FV = PMT * \(((1 + r)^n - 1) / r\)

where FV is the future value, PMT is the regular payment, r is the interest rate per compounding period, and n is the number of compounding periods.

In this problem, we want to solve for PMT, given that FV = $24,000, r = 6.6%, n = 8, and payments are made at the end of each year.

First, we need to calculate the interest rate per year, since the annuity is compounded annually:

i = r / 100 = 6.6% / 100 = 0.066

Next, we can plug in the values and solve for PMT:

24000 = PMT *\(((1 + 0.066)^8 - 1) / 0.066\)

24000 = PMT * 7.3605

PMT = 24000 / 7.3605

PMT ≈ $3,261.25

Hence, Miguel will need to deposit approximately $3,261.25 into the annuity each year for 8 years in order for the annuity to have a total value of $24,000.

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\({ \frac{5}{3}} \)

Step-by-step explanation:

\({ \purple{ \sf{3 \frac{2}{6} - 1 \frac{2}{3}}}} \)

\({ = \purple{ \sf{ \frac{18 + 2}{6} - \frac{3 + 2}{3}}}} \)

\({ = \purple{ \sf{ \frac{20}{6} - \frac{5}{3}}}} \)

\({ = \purple{ \sf{ \frac{20}{6} \times \frac{1}{1} - \frac{5}{3} \times \frac{2}{2}}}} \)

\({ = \purple{ \sf{ \frac{20}{6} - \frac{10}{6}}}} \)

\({ = \purple{ \sf{ \frac{20 - 10}{6}}}} \)

\({ = \purple{ \sf{ { \frac{ \cancel{10}^{ \green{ \sf{5}}} }{ \cancel{ 6_{ \green{ \sf{3}}} }}}}}}\)

\({ = \purple{ \boxed{ \red{ \sf{ \frac{5}{3}}}}}} \)

Answer:

yes

Step-by-step explanation:

2 = (3)(18) + (6)(7)

54 + 42 = (9)(10) + 6

54 + 42 = 90 + 6

O 54 + 42 = 6(9 + 7)

Answer:

Step-by-step explanation:

Black = 9, Blue = 6, Green = 1, Red = 4

Pr(Black) = 9/18 = 1/2 = 50%

Pr(Red or Green) = 5/18 = 28%

therefore it is 22% (50-28) more likely that Mrs. Devon will select a black pen than a red or green

Answer:

1. 9+6+1+4=20

Black 9/20 = 0.45 = 45%

Red or green = 5/20 = 0.25= 25%

selecting black is 45-25 = 20%

Answer:

y

a= ——

(r + 1 )t

Step-by-step explanation:

divide both sides

Step-by-step explanation:

part a:  Total is 10 hours

soccer: 2v + 1

volleyball: v

part b: 10 = 2v + 1

           -2v = -10 +1

            -2v = -9

            v = -9 ÷ -2

            v = 4.5

volleyball is 4.5 hours

if soccer is one hour longer than volleyball then soccer is 5.5 hours

4.5 + 5.5 is a total of 10 hours :)

Answer:

Step-by-step explanation:

let tacos be x and burritos be y

4.5x+7.75y = 519.25

It says there were twice as many tacos sold as there were burritos sold

Therefore, y = 2x

Substituting this in the above equation: 4.5x + 7.75*2x = 519.25

4.5x+15.5x = 519.25

x = 519.25/20

x = 25.9625

Answer:

49÷0.20= 245

He has to be able to have a number of text each month to be able to switch so 0.20 for each text he sends each month so you have to divide from 49.

Answer: The constant of proportionality is r = 5.

Step-by-step explanation:

O, we know that x and y are proportional, this means that:

y = r*x

where r is the constant of proportionality.

we also have the table

x    y

7    35

12   60

20   100

Now, we can replace those values in our equation and get, for the first pair:

35 = r*7

r = 35/7 = 5

for the second pair:

60 = r*12

60/12 = 5 = r

So we can conclude that the constant of proportionality is 5.

Answer:

5

Step-by-step explanation:

It was right for me on khan

Answer:

Here we have the table:

\(\left[\begin{array}{ccccc}t&20&21&22&23\\\ 16t^2&\end{array}\right]\)

To complete the table, we just need to input the different values of t in the equation:

f(t) = 16*t^2

Then for the first value, t = 20, we get:

f(20) = 16*(20)^2 = 6,400

now we write that in the table:

\(\left[\begin{array}{ccccc}t&20&21&22&23\\\ 16t^2&6,400&\end{array}\right]\)

Now we just need to do the same for the other 3 values:

f(21) = 16*(21)^2 = 7,056

f(22) = 16*(22)^2 = 7,744

f(23) = 16*(23)^2 = 8,464

Then the completed table is:

\(\left[\begin{array}{ccccc}t&20&21&22&23\\\ 16t^2&6,400& 7,056&7,744&8,464\end{array}\right]\)

Answer:

x = 3

Step-by-step explanation:

To answer for x first distribute the 4 in the parenthesis

4x + 1 - 5x = 2x +4x - 20

Next add or subtract the x's

-x + 1 = 6x - 20

Now subtract 6x and 1 on both sides to get x on the left and the rest on the right

-7x = -21

Lastly, divide -7 on both sides

x = 3

Answer:

Use maths papa

Step-by-step explanation:

Answer:

A. 7.88*10^(-16)

B. 1.0000000 (almost certainty)

Step-by-step explanation:

United Airlines flight 1832 from chicago to orlando is on time 80% of the time, according to united states airlines. Suppose 65 flights are randomly selected.

Binomial distribution will be required for the discrete case where there can be only two outcomes for each trial, success or failure, and where the number of experiments is known, and the probability of success is known and remains constant.

P(x) = n* (C(n,x)*p^x*(1-p)^(n-x)

where

n = size of experiment in number of trials

p = probability of success of one individual trial

x = number of successes

C(n,x) = number of combinations when x objects are taken out of n

         = n!/(x!*(n-x)!)

P(x) = probability of success out of n experiments.

A) find the probability that exactly 22 flights are on time.

n = 65

x = 22

p = 0.80

P(22) = C(65,22) (0.80^22 * 0.20^(65-22))

= 65!/(22!(65-22)!) * (0.80^22 * 0.20^(65-22))

= 7.88*10^(-16)

B) Find the probability that at least 2 flights are on time.

We find the probabilities of 0 and 1 flight on time, and subtract from 1 to get probability of at least 2 on time.

P(0) = C(65,0)*0.8^0*0.2^65 = 3.689*10^(-46)

P(1) = C(65,1)*0.8^1*0.2^64 = 9.59*10^(-44)

Therefore probability of having at least 2 flights on time equals

1-P(0)-P(1) = 1-3.689*10^(-46)-9.59*10^(-44) = 1.0  (almost certainty)

When two balanced dice are rolled, there are 36 possible outcomes. the probability of either double being rolled or the sum of the dice being 10 is C.  2/9

The probability of either double being rolled or the sum of the dice being 10 can be found by analyzing the possible outcomes. There are 6 double possibilities (1,1; 2,2; 3,3; 4,4; 5,5; 6,6) and 3 possibilities for the sum of the dice being 10 (4,6; 6,4; 5,5). Since 5,5 is a double and also gives a sum of 10, we don't count it twice.

Hence, there are a total of 8 unique favorable outcomes (6 double + 2 non-double combinations that give a sum of 10). Since there are 36 possible outcomes when rolling two dice (6 sides on die 1 multiplied by 6 sides on die 2), the probability of either double being rolled or the sum of the dice being 10 is:

P(E) = (Number of favorable outcomes) / (Total possible outcomes) = 8 / 36

To simplify the fraction, we can divide both the numerator and the denominator by their greatest common divisor (GCD), which is 4:

P(E) = 8/36 ÷ 4/4 = 2/9

So, the probability of either double being rolled or the sum of the dice being 10 is 2/9 Therefore the correct option is    C.

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Answer:

-47

Step-by-step explanation:

Answer:

-47

Step-by-step explanation:

The opposite of a number is just the number on the opposite side of zero on the number line.

For example, the opposite of 5 is -5.