urgent i need it 20 points for whoever that does it

Answer:

1/3

Step-by-step explanation:

y = mx + b

m is the slope and b is your y-intercept.

Answer:

m = 1/3

Step-by-step explanation:

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.

\(\stackrel{f(x)}{y}~~ = ~~2x^2+4x\hspace{5em}\stackrel{\textit{quick switcheroo}}{x~~ = ~~2y^2+4y} \\\\\\ x=2(y^2+2y)\implies \cfrac{x}{2}=y^2+2y\impliedby \begin{array}{llll} \textit{now let's complete the square}\\ \textit{to make it a perfect square trinomial}\\ \textit{by using our good friend, Mr "0"} \end{array} \\\\\\ \cfrac{x}{2}=y^2+2y(+1^2-1^2)\implies \cfrac{x}{2}=y^2+2y+1-1\implies \cfrac{x}{2}=(y^2+2y+1)-1\)

\(\cfrac{x}{2}+1=(y^2+2y+1^2)\implies \cfrac{x}{2}+1=(y+1)^2\implies \sqrt{\cfrac{x}{2}+1}=y+1 \\\\\\ \sqrt{\cfrac{x+2}{2}}=y+1\implies \sqrt{\cfrac{x+2}{2}}-1=y~~ = ~~f^{-1}(x)\)

The formal charge on the bromine atom in the given structure is zero, indicating that it is formally neutral.

To determine the formal charge on an atom, we compare the number of valence electrons the atom should have (based on its position in the periodic table) with the number of electrons it actually has in the structure. The formula to calculate the formal charge is as follows:

Formal Charge = Valence Electrons - Lone Pair Electrons - 1/2 * Bonding Electrons

In the given structure, if we count the valence electrons on the bromine atom, we find that it has 7 valence electrons. Looking at the structure, we can see that bromine is surrounded by three bonds and one lone pair of electrons. Each bond contributes two electrons, and the lone pair contributes two electrons as well. Plugging these values into the formal charge formula, we get:

Formal Charge = 7 - 2 - 1/2 * 6 = 7 - 2 - 3 = 2 - 3 = -1

However, this formal charge of -1 does not accurately represent the bromine atom in the given structure. In reality, the bromine atom has an expanded octet, meaning it can accommodate more than eight valence electrons. The formal charge of -1 suggests that the bromine atom has an extra electron, which is not the case in this structure. Therefore, the more accurate formal charge for the bromine atom is zero, indicating that it is formally neutral.

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The function \(f(x) = 4\sqrt[3]{x}\) is a cube root function

The function end behavior is:

\(\quad \mathrm{as}\:x\to \:+\infty \:,\:f\left(x\right)\to \:+\infty \:,\:\:\mathrm{and\:as}\:x\to \:-\infty \:,\:f\left(x\right)\to \:+\infty\)

The equation of the function is given as:

\(f(x) = 4\sqrt[3]{x}\)

To determine the end behavior, we plot the graph of the function f(x).

From the attached graph of the function, we can see that:

As x approaches infinity, the function f(x) approaches infinity, and vice versa

Hence, the function end behavior is:

\(\quad \mathrm{as}\:x\to \:+\infty \:,\:f\left(x\right)\to \:+\infty \:,\:\:\mathrm{and\:as}\:x\to \:-\infty \:,\:f\left(x\right)\to \:+\infty\)

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The time that will elapse before the concentration of dye in the tank reaches 1% of its original value is 460.52minutes by using differential equation.

Let t denote the time in minutes, V = V (t) denote the amount of liquid in liters, and m = m(t) denote the amount of dye in grams. The tank initially has a capacity of 200 L and a concentration of 1\(\frac{g}{L}\), or mass of dye per unit volume.

P(t)=quantity of dye in tank after t min

P(0)=200

by using differential equation

\(\frac{dQ(t)}{dt}\)= rate in and rate out

\(\frac{dQ(t)}{dt}\)=-2\(\times \frac{Q(t)}{200} =- \frac{Q(t)}{100}\)

Q(t)=c×\(e^{\frac{-t}{100}}\)

200=Q(0)=c×\(e^0\)\(\rightarrow c=200\)

Q(t)=200×\(e^{\frac{-t}{100}}\)

1% of 200 is 2 grams

2=200×\(e^{\frac{-t}{100}}\)

\(e^{\frac{t}{100}}\)=100

t=100ln(100)

t=460.52minutes

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Answer:

p.

Step-by-step explanation:

I just took the quiz and got it correct.

Hope this helps! ^^

Answer:

p

Step-by-step explanation:

just took it

Answer:

The phones of the first group have is 11

The ipads the first group has is 6

Step-by-step explanation:

Assuming the number of phones the first group has is x while the number of the ipads the first group has is y.

x+y=17;2x+3y=40.

x+y=17

x+y+−y=17+−y(Add -y to both sides)

x=−y+17

2x+3y=40

2(−y+17)+3y=40

y+34=40(Simplify both sides of the equation)

y+34+−34=40+−34(Add -34 to both sides)

y=6

x=−y+17

x=−6+17

x=11(Simplify both sides of the equation)

x=11 and y=6

So the number of phones the first group have is 11 and the number of ipads the first group have is 6

Answer:

11 phones, 6 ipads

Step-by-step explanation:

This is a system of equations.

Group 1 had a total of 17 devices, so phones (p) + iPads (i) = 17

Group 2 had 40 devices.  They had twice the number of phones (2p) & 3 times the number of iPads (3i).

Here are the 2 equations:

p + i = 17

2p + 3i = 40

We need to eliminate a variable. I'm going to multiple=y the entire first equation by -2 to make this possible,=.

-2( p + i = 17)

This equation is now -2p - 2i = -34

Line that up with the first equation.

-2p - 2i = -34                             Add these together

2p + 3i = 40                               and you get

---------------------

i = 6

This means the first group had 6 iPads. If they had 6 iPads, then they had 11 phones to make the total of 17 devices.

The product of the two polynomials is (8x³)(4x⁷) = 32x¹⁰.

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Answer:

\(\frac{y}{y-2}=\frac{y-3}{y-4}\)

The formula of a cylinder is 2πr (r+h)

2π4 (4+9)

8π (13)

25.13 (13)

326.73

Cubes: area = a^3

3x3x3 = 27

326.73 / 27 = 12.1

Claudia would need to buy 13 wax cubes to fil the candle.

hope this helps k12 students :)

The value of f(3/4) is 5/4.

A function is a relation from a set A to a set B where the elements in set A only maps to one and only one image in set B. No elements in set A has more than one image in set B.

Given is a function.

f(x) = 2x - 1/4

We have to find the value of the function when the input value x = 3/4.

For that, substitute 3/4 in place of x.

f(3/4) = (2 × 3/4) - 1/4

         = 6/4 - 1/4

         = 5/4

Hence the value of the function is 5/4.

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The ordered pairs (0,13) and (10, 0) are joined to best draw the line of best fit for the given scatter plot. So, option 4 is correct.

For the given scatter plot, to draw a line of best fit, the slope is to be calculated. The slope of the required line is calculated by

m = [n(∑xy) - (∑x)(∑y)]/[n(∑x²) - (∑x)²]

Where,

∑xy = sum of the product of x and y values

∑x = sum of x values

∑y = sum of y values

∑x² = sum of square values of x

n = total number of scatter points

And the y-intercept is calculated by

b = [∑y - m(∑x)]/n

Where m is the slope obtained above

The given scatter plot has the coordinate points:

(0,14), (1, 11), (2, 9), (3, 10),(4, 7), (5, 7), (6, 5), (7, 5), (8, 3), (9, 1), (10, 0)

Such that n = 11

Then the required components are calculated as follows:

∑x = 0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55

∑y = 14 + 11 + 9 + 10 + 7 + 7 + 5 + 5 + 3 + 1 + 0 = 72

∑xy = (0 × 14) + (1 × 11) + (2 × 9) + (3 × 10) + (4 × 7) + (5 × 7) + (6 × 5) + (7 × 5) + (8 × 3) + (9 × 1) + (10 × 0) = 220

∑x² = 0² + 1² + 2² + 3² + 4² + 5² + 6² + 7² + 8² + 9² + 10² = 385

Then the slope is calculated as follows:

slope m =  [n(∑xy) - (∑x)(∑y)]/[n(∑x²) - (∑x)²]

On substituting,

m = [11(220) - (55)(72)]/[11(385) - (55)²]

⇒ m = -14/11 = -1.2727273 ≅ -1.3

∴ m = -1.3

Then calculating the y-intercept:

we have b = [∑y - m(∑x)]/n

On substituting,

b = [72 - -1.3(55)]/11

∴ b = 13

Then the slope-intercept form of the required line is

y = -1.3x + 13

When x = 0,

y = -1.3(0) + 13 = 13

When y = 0,

0 = -1.3x + 13

⇒ 1.3x = 13

⇒ x = 13/1.3 = 10

Therefore, the coordinates (0, 13) and (10, 0) give the best draw for the line of best fit.

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The probability that no births will occur today is 0.1353 (approximately) found by using the Poisson distribution.

Given that the number of births in a local hospital follows a Poisson distribution and averages λ per day.

To find the probability that no births will occur today, we can use the formula of Poisson distribution.

Poisson distribution is given by

P(X = x) = e-λλx / x!,

where

P(X = x) is the probability of having x successes in a specific interval of time,

λ is the mean number of successes per unit time, e is the Euler’s number, which is approximately equal to 2.71828,

x is the number of successes we want to find, and

x! is the factorial of x (i.e. x! = x × (x - 1) × (x - 2) × ... × 3 × 2 × 1).

Here, the mean number of successes per day (λ) is

λ = 2

So, the probability that no births will occur today is

P(X = 0) = e-λλ0 / 0!

= e-2× 20 / 1

= e-2

= 0.1353 (approximately)

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Answer:

x = 0

Step-by-step explanation:

both angles equal each other

I hope this helps

The conversion of a fraction number with denominator 5 and numerator 2 , 2/5 in decimals is equals to the 0.4 value.

A decimal number can be defined as a number whose whole number part and fractional part are separated by a decimal point. Writing 2/5 as a decimal number by converting the denominator to powers of 10. We multiply the numerator and denominator by a number so that the denominator is a power of 10.

2/5 = (2 × 2) / (5 × 2) = 4/10

Now move the decimal point to the left as many places as there are zeros in the denominator, which is a power of 10.

The decimal moved one place to the left because the denominator was 10. Therefore, 4/10 = 0.4. Hence, required value is 0.4.

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The common ration between the sum of a certain infinite geometric series is 2. the sum of the squares of all the terms is 3 is ( r,a) = ( 1/7, 12/7)

That means { a/ 1-r} = 2

a^2/1-r^2 = 3

2a/ 1+r = 3

2(2-2r)/ 1+r = 3

4-4r= 3+ 3r

7r + 1

r= 1/7

2a/ 8/7 = 3

7a= 12

a= 12/7

so( r,a) = ( 1/7, 12/7)

What is infinite geometric series?

An infinite geometric series is the sum of an infinite geometric sequence. This series would have no last term. The general form of the infinite geometric series is a1 + a1r + a1r2 + a1r3+…, where a1 is the first term and r is the common ratio.

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Answer:

the prime factorization of 7850 is 2, 5, 5, 157

Given data:

The given equation of the parabola is Y=a(x-h)^2+k.

The vertex of the parabola is (h, k).

The axis of symmetry is x=h.

Thus, the vertex of the parabola is (h,k).

Thus, the axis of symmetry is x=h.

Answer:

Step-by-step explanation:

56.1,12.1,23.6

Answer:

15

Step-by-step explanation:

75 x .20

15

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanatain:

8000000

Answer:

8,000

Step-by-step explanation:

4x2=8

add 3 0s

Hope this helps plz give brainliest

Answer:

5 < y < 2 This asks for all whole numbers y which are greater than 5 and also less than 2. That's a contradiction so there are no such whole numbers.

Step-by-step explanation:

Answer:

-1

Step-by-step explanation:

Tn = a+(n-1)d (general formula)

Tn = 8-n (given formula)

T9 =8-9

T9=-1

Answer:

There are $\boxed{3}$ paths from $A$ to $B.$

The height of the mountain is 1.49 miles if in traveling across flat land you notice a mountain directly in front of you.

Given,

In the question:

Its angle of elevation (to the peak) is 3.5 degrees.

After you drove 13 miles closer, the angle of elevation is 9 degrees.

To find the approximate height of the mountain.

What is trigonometry?

Trigonometry is a branch of mathematics that deals with the relationship between the sides and angles of a right-angle triangle.

Now, According to the question:

It is given that:

In traveling across flat land you notice a mountain directly in front of you.

Applying tan ratio:

tan3.5 = h/(15+x)

Here h is the height of the mountain and x is the distance between the base of the mountain and to the second position of the car.

h = (15 + x) tan3.5

h = x tan9

(15 + x) tan3.5 = x tan9

x = 9.44

h = 9.44 tan9

h = 1.49 miles

Hence, the height of the mountain is 1.49 miles if in traveling across flat land you notice a mountain directly in front of you.

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Step-by-step explanation:

d=(3/4)-(1/4)=(5/4)-(3/4)=(7/4)-(5/4)=1/2

then it is an arithmetic sequence

by using this equation :

a(n) = a1 +(n-1)d

and we have : a1=(1/4),  d=(1/2)

So:

Explicit formula: a(n) = (1/4) +(n-1)*(1/2)

hope this helps

Answer:

Step-by-step explanation:

d=(3/4)-(1/4)=(5/4)-(3/4)=(7/4)-(5/4)=1/2

then it is an arithmetic sequence

by using this equation :

a(n) = a1 +(n-1)d

and we have: a1=(1/4),  d=(1/2)

So:

Explicit formula: a(n) = (1/4) +(n-1)*(1/2)

\(6x - 10 = - 8 + 3x \\ 6x - 3x = - 8 + 10 \\ 3x = 2 \\ \\ x = \frac{2}{3} \\ \\ x = 0.6\)

I hope I helped you^_^