Simplify 48 divided (-8)

Answer: 80

Step-by-step explanation: took the test

Answer: its not 80

Step-by-step explanation:

took the test trust me.

Answer:

All of the options when substituted for b will make the root of b irrational

Step-by-step explanation:

Mathematically, surds are roots of non-perfect squares and they are tagged as irrational numbers

For b to be irrational, all of the numbers given would fit. This is because all of these numbers are non-perfect squares meaning they do not have square root.

So what this mean is that these numbers when put under the root umbrella are irrational numbers as they are not perfect squares

The general form of such a model that predicts the volume of sales (Y) as a function of advertising (X) in which sales increase as advertising increases, but at a decreasing rate is given by  Y^ = b0 + b1X + b2X². Option C.

The general form of the model that fits the description of the sales model that is given in the problem is C. Y^ = b0 + b1X + b2X². Where Y^ represents the predicted or estimated value of Y. b0, b1, and b2 are the coefficients of the model, and they represent the intercept, the slope, and the curvature of the relationship between X and Y, respectively.

In this model, the variable X has a quadratic relationship with the variable Y because of the presence of the squared term X². This indicates that the effect of X on Y is not linear but curvilinear, which means that the effect of X on Y changes as X increases. Specifically, the effect of X on Y increases initially but then levels off or diminishes as X becomes larger. Answer option C.

More on models: https://brainly.com/question/848129

#SPJ11

(a) f(2)+g(2) = 13

(b) f(g(2)) = 9

(c) f(g(x)) = 2x³+1

(d) g(f(x)) = 6x²+1

(e) f(f(x)) = x⁶

the following compositions, and simplify their expressions:

(a)** f(2) = 2³ = 8 and g(2) = 2(2) + 1 = 5, so f(2)+g(2) = 8+5 = 13.

(b)** g(2) = 2(2) + 1 = 5, so f(g(2)) = f(5) = 5³ = 125.

(c)** g(x) = 2x+1, so f(g(x)) = f(2x+1) = (2x+1)³ = 8x³ + 12x² + 6x + 1.

(d)** f(x) = x³, so g(f(x)) = g(x³) = 2(x³) + 1 = 2x³ + 1.

(e)** f(x) = x³, so f(f(x)) = f(x³) = (x³)³ = x⁶.

to learn more about expressions click here:

brainly.com/question/30091977

#SPJ11

Answer:

The margin of error of his experiment is of 0.1074.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \(\pi\), and a confidence level of \(1-\alpha\), we have the following confidence interval of proportions.

\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)

In which

z is the z-score that has a p-value of \(1 - \frac{\alpha}{2}\).

The margin of error is of:

\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)

30 M & M's from a bag, and 3 of them are green.

This means that \(n = 30, \pi = \frac{3}{30} = 0.1\)

Standard 95% confidence level

So \(\alpha = 0.05\), z is the value of Z that has a p-value of \(1 - \frac{0.05}{2} = 0.975\), so \(Z = 1.96\).

Margin of error:

\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)

\(M = 1.96\sqrt{\frac{0.1*0.9}{30}}\)

\(M = 0.1074\)

The margin of error of his experiment is of 0.1074.

They bought a total of 160 pairs of shoes and boots

Variable is a value that can change, depending on conditions.

Let's start by defining some variables:

Let x be the number of pairs of shoes they bought.

Let y be the number of pairs of boots they bought.

From the problem, we know that:

The cost of a pair of shoes is 20 dollars.

The cost of a pair of boots is 60 dollars.

They spent a total of 8000 dollars,

so we have:

20x + 60y = 8000

They bought 3 times as many boots as shoes, so we have:

y = 3x

Now we can substitute y = 3x into the first equation and solve for x:

20x + 60(3x) = 8000

20x + 180x = 8000

200x = 8000

x = 40

So they bought 40 pairs of shoes. Using y = 3x, we find that they bought 120 pairs of boots.

Therefore, they bought a total of 40 + 120 = 160 pairs of shoes and boots.

Learn more about variable here :brainly.com/question/25223322

#SPJ1

The critical values for the 95% confidence interval for the population standard deviation with n=15 and α=0.05 are 6.262 and 26.119

We must utilise the chi-square distribution with (n-1) degrees of freedom to establish the crucial values for the confidence interval for the population standard deviation.

With n=15 and α=0.05, we can find the critical values using a chi-square table or a calculator. For a 95% confidence interval (α=0.05), the critical values are:

Lower critical value = chi-square value at (n-1) degrees of freedom and

α/2 = chi-square value at 14 degrees of freedom and 0.025

= 6.262

Upper critical value = chi-square value at (n-1) degrees of freedom and

1-α/2 = chi-square value at 14 degrees of freedom and 0.975

= 26.119

Therefore, the critical values for the 95% confidence interval for the population standard deviation with n=15 and α=0.05 are 6.262 and 26.119 (rounded to three decimal places).

Learn more about standard deviation here:

brainly.com/question/475676

#SPJ4

Complete question is below

determine the critical values for the confidence interval for the population standard deviation from the given values. round your answers to three decimal places. n=15 and α=0.05.

Answer:

y>-2x-1 answer is b

-4x+y> 1 is c I believe

Step-by-step explanation:

Step-by-step explanation:

"structure" means we are looking at a point-slope form

y - y1 = a(x - x1)

"a" being the slope, (x1, y1) being a point on the line.

so,

y + 2 = 5x tells us

the slope is 5.

and the point (x1, y1) is (0, -2)

Answer:

8.3*10^2

Step-by-step explanation:

The e just equals 10.

Did this help?

Answer: 0.083

Step-by-step explanation:

Answer:

The independent variable is the variable that is manipulated or changed during an experiment. In this case, the independent variable is represented by the x-values of the given points.

So, the answer would be option A: {-2, 3, 1, 5}

Step-by-step explanation:

brainliest Plsssss

To calculate the cost using data from watts produced and watts per unit cost, you can follow these steps:

Determine the total watts produced: Multiply the watts produced by the number of units. Total Watts = Watts Produced × Number of Units

Calculate the cost per unit of electricity: Divide the total watts by the watts per unit cost. Cost per Unit = Total Watts / Watts per Unit Cost

Calculate the total cost: Multiply the cost per unit by the number of units. Total Cost = Cost per Unit × Number of Units

Here's an example to illustrate the calculation:

Let's say you have 10 solar panels, and each panel produces 200 watts. The cost per unit of electricity is $0.15 per watt.

Total Watts = 200 watts/panel × 10 panels = 2000 watts

Cost per Unit = 2000 watts / $0.15 per watt = $13.33 per unit

Total Cost = $13.33 per unit × 10 units = $133.33

Therefore, the total cost of electricity generated by the 10 solar panels would be $133.33.

By multiplying the watts produced by the number of units and dividing it by the watts per unit cost, you can determine the cost per unit. Multiplying the cost per unit by the number of units gives you the total cost.

To know more about cost, visit

https://brainly.com/question/32842885

#SPJ11

Answer:

8, 0

Step-by-step explanation:

Answer:

3791

Step-by-step explanation:

Answer:

3791

Step-by-step explanation:

2872+919=3791

2872 + 919 = 3791

2872+919=3791

2872+919=3791

The diameter of the small volcano 'Pico' would be = 8km

An isoline is defined as the line found on a map that has constant value of either distance, temperature or rainfall.

The isoline that is used in the given map above = 2000m.

The number of lines that surrounds the pico volcano = 4

Therefore the diameter of the volcano = 2000×4 = 8000m

But 1000m = 1km

8000m = 8km

Learn more about diameter here:

https://brainly.com/question/30460318

#SPJ4

The probability that a girl answers the door when the Smiths' children open depends on the gender distribution of their children. The probability that a girl answers the door is 1/3 or approximately 33.33%.

Without any additional information about the Smiths family, we cannot determine the exact probability. However, if we assume that the probability of having a boy or a girl is equal (i.e., a 50% chance for each), we can make an estimate.

Under this assumption, let's consider the possible outcomes for the Smiths' children: BB (both boys), BG (one boy and one girl), and GG (both girls). Since we know that one of their children will answer the door, the outcomes BB and BG are possible scenarios in which a boy answers. The only scenario in which a girl answer is GG. Therefore, the probability that a girl answers the door is 1/3 or approximately 33.33%.

It is important to note that this estimation assumes an equal probability for each gender and that the gender of one child does not affect the gender of the other. In reality, the probability could differ depending on the specific circumstances and family dynamics of the Smiths.

Learn more about probability here:

https://brainly.com/question/32117953

#SPJ11

Answer:

(- 2, - \(\frac{1}{3}\) )

Step-by-step explanation:

Given the 2 equations

2x + 3y + 5 = 0 → (1)

5x - 3y + 9 = 0 → (2)

Rearrange (1) expressing 3y in terms of x by subtracting 2x + 5 from both sides

3y = - 2x - 5

Substitute 3y = - 2x - 5 into (2)

5x - (- 2x - 5) + 9 = 0 ← distribute parenthesis on left side and simplify

5x + 2x + 5 + 9 = 0

7x + 14 = 0 ( subtract 14 from both sides )

7x = - 14 ( divide both sides by 7 )

x = - 2

Substitute x = - 2 into either of the 2 equations and solve for y

Substituting into (1)

2(- 2) + 3y + 5 = 0

- 4 + 3y + 5 = 0

1 + 3y = 0 ( subtract 1 from both sides )

3y = - 1 ( divide both sides by 3 )

y = - \(\frac{1}{3}\)

solution is (- 2, - \(\frac{1}{3}\) )

Answer:

sample response: Since both points have the same x-coordinate, the line would be vertical. A vertical line has no slope because the run of the graph, which is the denominator, is zero and therefore an undefined fraction.

Step-by-step explanation:

Answer:

slope: -3/5

y-intercept (0,3)

x    -      y

0          3

5          0

Step-by-step explanation:

I just did it

Answer:

A, C, E

Step-by-step explanation:

Answer:

Isnt it where you write it in the easiest way to understand it? sorry if its wrong :/

Step-by-step explanation:

If you mean standard from in math  it is basically writing down a smaller number instead of a larger one. For example 10 x 10 x 10, you could just write 10*3.  

a) The divergence of f = \(e^{xy\) i - cosy j + sin z²k is y \(e^{xy\) + sin y + 2z cos z², and the curl is 0.

b) The divergence of f = xi + yj - zk is 1, and the curl is 0.

a) To find the divergence and curl of the vector field f = \(e^{xy\) i - cosy j + sin z²k:

Divergence:

The divergence of a vector field f = P i + Q j + R k is given by the formula:

div(f) = ∇ · f = ∂P/∂x + ∂Q/∂y + ∂R/∂z

Given f = \(e^{xy\) i - cosy j + sin z²k, we can calculate the divergence as follows:

∂P/∂x = ∂/∂x(\(e^{xy\)) = y \(e^{xy\)

∂Q/∂y = ∂/∂y(-cosy) = sin y

∂R/∂z = ∂/∂z(sin z²) = 2z cos z²

Therefore, the divergence of f is:

div(f) = y \(e^{xy\) + sin y + 2z cos z²

Curl:

The curl of a vector field f = P i + Q j + R k is given by the formula:

curl(f) = ∇ × f = ( ∂R/∂y - ∂Q/∂z ) i + ( ∂P/∂z - ∂R/∂x ) j + ( ∂Q/∂x - ∂P/∂y ) k

Using the vector field f = \(e^{xy\) i - cosy j + sin z²k, we can calculate the curl as follows:

∂P/∂y = ∂/∂y(\(e^{xy\)) = x \(e^{xy\)

∂Q/∂z = ∂/∂z(-cosy) = 0

∂R/∂x = ∂/∂x(sin z²) = 0

∂R/∂y = ∂/∂y(sin z²) = 0

∂Q/∂x = ∂/∂x(-cosy) = 0

∂P/∂z = ∂/∂z(\(e^{xy\)) = 0

Therefore, the curl of f is:

curl(f) = (0 - 0) i + (0 - 0) j + (0 - 0) k

curl(f) = 0 i + 0 j + 0 k

curl(f) = 0

b) To find the divergence and curl of the vector field f = xi + yj - zk:

Divergence:

∂P/∂x = ∂/∂x(x) = 1

∂Q/∂y = ∂/∂y(y) = 1

∂R/∂z = ∂/∂z(-z) = -1

Therefore, the divergence of f function is:

div(f) = ∇ · f = 1 + 1 - 1 = 1

Curl:

∂P/∂y = ∂/∂y(x) = 0

∂Q/∂z = ∂/∂z(y) = 0

∂R/∂x = ∂/∂x(-z) = 0

∂R/∂y = ∂/∂y(-z) = 0

∂Q/∂x = ∂/∂x(y) = 0

∂P/∂z = ∂/∂z(x) = 0

Therefore, the curl of f is:

curl(f) = (0 - 0) i + (0 - 0) j + (0 - 0) k

curl(f) = 0 i + 0 j + 0 k

curl(f) = 0

Learn more about the divergence at

https://brainly.com/question/32518739

#SPJ4

Answer:

We all experience inequality. Never have I known it to be enjoyable.

Step-by-step explanation:

Nobody is created equally and that's the cold hard truth. Each of us is born into a different story/background, with a unique set of characteristics. Often I've known inequality to lead to envy, vendettas, and insecurity.

The equation used for solving the value of x will be 2x+4x+10+6x-10 = 180 and value of x is 15.

A common property of all kinds of triangles is the angle sum property. The angle sum property of triangles is 180°. This means that the sum of all the interior angles of a triangle is equal to 180°.

Given a triangle with interior angles 4x+10, 6x-10 and 2x

According to the angle sum property of a triangle,

2x+4x+10+6x-10 = 180

x = 15

Hence, The equation used for solving the value of x will be 2x+4x+10+6x-10 = 180 and value of x is 15.

For more references on angle sum property of a triangle, click;

https://brainly.com/question/8492819

#SPJ2

Answer:

m<2.5

Step-by-step explanation:

The position value, r(t) is equals to the (t³/6)k + 2j and velocity value, v(t) is equals to ( t²/2 )k + 4i , for a(t) = tk, v(0) = 4i, r(0) = 2j.

Acceleration is defined as the rate of change of the velocity of an object with respect to time. Accelerations are vector quanty.

a = dv/dt

We have the following informations are available,

Initial velocity, v(0) = 4i

Initial position, r(0) = 2j

Acceleration at any time "t",

a(t) = tk

we have to determine the value of v(t) and r(t).

As we know, a(t) = dv(t)/dt = tk

integrating the above equation ,

v(t) = ∫tk dt = ( t²/2 )k + c

at t = 0 , v(0) = 0 + c = 4i ( since, v(0) = 4i

=> c = 4i

So, v(t) = ( t²/2 )k + 4i

Also, velocity is calculated by derivative of postion (r) with respect to time.

=> v(t) = dr(t) /dt

=> r(t) = ∫ v(t) dt

=> r(t) = ∫ ( t²/2 )k dt

integrating value of the right hand side,

r(t) = ( t³/2×3 )k +d

= (t³/6)k + d

At t = 0, r(0) = (0/6)k + d

=> r(0) = d = 2j

so, r(t) = (t³/6)k + 2j

Hence, the required position and velocity are

(t³/6)k + 2j and ( t²/2 )k + 4i.

To learn more about Accelation , refer:

https://brainly.com/question/10307723

#SPJ4

as you already know, to get the inverse of any expression we start off by doing a quick switcheroo on the variables and then solving for "y", let's do so.

\(2(x-2)^2=8(7+y)\hspace{5em}\stackrel{\textit{quick switcheroo}}{2(y-2)^2=8(7+x)} \\\\\\ (y-2)^2=\cfrac{8(7+x)}{2}\implies (y-2)^2=4(7+x)\implies (y-2)^2=28+4x \\\\\\ y-2=\pm\sqrt{28+4x}\implies \boxed{y=2\pm\sqrt{28+4x}}\qquad \impliedby f^{-1}(x)\)

The point that belongs in the inverse variation along with (3, -4) is option A, (-2, 6).

To determine which point belongs in the inverse variation along with (3, -4), we can use the concept that in inverse variation, the product of the x-coordinate and the y-coordinate remains constant.

By multiplying the x-coordinate (3) and the y-coordinate (-4), we get -12.

Let's check the product for each option:

A. (-2, 6): -2 * 6 = -12 (matches the constant product)

B. (6, -8): 6 * -8 = -48 (does not match)

C. (3, 4): 3 * 4 = 12 (does not match)

D. (-4, -3): -4 * -3 = 12 (does not match)

Learn more about inverse variation on:

https://brainly.com/question/13998680

#SPJ1