Wally is 12 yrs old
Billy's cousin Molly is twice as
old as Wally. How old is Molly?

Answer:

100

Step-by-step explanation:

Example       33/ 100 = 33%          28/ 100= 28 %      etc

The equation of the axis of symmetry will be x = -2 and the curve is drawn below.

It's the locus of a moving point that keeps the same distance between a stationary point and a specified line. The focus is a non-movable point, while the directrix is a non-movable line.

Let the point (h, k) be the vertex of the parabola and a be the leading coefficient.

Then the equation of the parabola will be given as,

y = a(x - h)² + k

The equation is given below.

y = -3(x + 2)² + 1

The equation of the axis of symmetry will be given as,

x + 2 = 0

x = - 2

The equation of the axis of symmetry will be x = -2 and the curve is drawn below.

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The function with same rate of change as the function y = (7/4)x + 3 will be option C.

The rate of change for a function is nothing but rate of change of one thing over the second thing.

it can be calculated by  [tex]\frac{y_{2} - y_{1} }{x_{2} - x_{1} }[/tex]

For a equation written in y = mx + c , m is nothing but the slope / rate of change of function.

So for function  y = (7/4)x + 3

m = 7/4 which is the rate of change for this function.

Now let us find rate of change for each function.

For A rate of change will be = (-4 - 0) / (5 - 1)

= -4/3

For B it will be = ( 4 - 1) / (0 - (-1) )

= 3

For C it will be = (15 - 8) / (8 - 4)

= 7/4

For D it will be = (-2 - 0) / ( 0 - (-1) )

= -2

Therefore the rate of change which is same as the given function is of option C.

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Mr. Baker moves 2 meters per second while standing on the moving sidewalk, and he walked 20 meters to get to the moving sidewalk. which is the correct answer would be an option (C).

Distance is defined as the product of speed and time.

The function shows Mr. Baker's distance (d), in meters, from the check-in counter while he has been standing on the moving sidewalk for s seconds. d = 2s + 20.

Here He travels at a speed of two meters per second while standing on the moving sidewalk, and he walked 20 meters to get there.

Thus, Mr. Baker moves 2 meters per second while standing on the moving sidewalk, and he walked 20 meters to get to the moving sidewalk.

Hence, the correct answer would be option (C).

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4. The greatest change in elevation is on Checkpoint 4.

5. The change in elevation on the final checkpoint is of: -62.1 feet.

The change in elevation for each checkpoint is given by the subtraction of the final elevation by the initial elevation. Both these elevations are given on the table.

Hence, for each checkpoint, the changes are given as follows:

Hence the greatest change is of 210.4 feet on checkpoint 4.

The final elevation is of 148.3 feet, hence the change in elevation on the final stage is obtained as follows:

148.3 - 210.4 = -62.1 feet.

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The equations for Mechanic G is y = 30x and for mechanic K is y = 20x + 30

Rate is a ratio that compares two different quantities which have different units. For example, if we say John types 50 words in a minute, then his rate of typing is 50 words per minute. The word "per" gives a clue that we are dealing with a rate.

for mechanic G since he charges 30 dollars per hour, for x hours his charge will be 30x

so that y = 30x

For K since he charges at rate of 20 dollars per hour, his charge after x hours will be 20x. if he takes 30 dollars reservation fee

then his total cost is y = 20x + 30

In conclusion, the equations for mechanic G and K are y = 30x and y = 20x + 30 respectively.

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The steps between the human resource department and accountant department are 85 steps.

What is Human Resource?

The group of individuals who work for a given organization, business sector, industry, or economy is referred to as its human resources.

As given in the question,

Randi must climb 51 steps from her office to get to the accounting department, and

The HR department is 34 steps below her office.

Since, the HR department is below her office and accountant department is above her office so, we need to add the steps taken from her office to reach both department.

So,

Steps between HR department and accountant department = Steps between her office and HR department + Steps between her office and accountant department

Steps between HR department and accountant department = 51 + 34

Therefore,

Steps between HR department and accountant department = 85 steps

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Answer: 1st and 2nd

Step-by-step explanation:

Answer:

-(x+1)²+4

Step-by-step explanation:

y = -x²-2x-3

= -[x²+2x+3]

= -[(x²+2x)+3]

{formulae to get the vertex form is add (b/2)² to the expression

(2/2)² = 1}

= -[(x²+2x+1)-1+3]

{we are adding so we have to subtract the same number as well}

= -[(x²+2x+1)+2]

thus vertex form,

y = -(x+1)²+2

The graph has been shown where lines A and B meet each other at the coordinates (0.51, 5.2).

So, the coordinates where both lines meet are:

Coordinates for line A:

Coordinates for line B:

Now, plot the graph as follows:

(Refer to the graph attached below)

The coordinates where both lines meet are:

Therefore, the graph has been shown where lines A and B meet each other at the coordinates (0.51, 5.2).

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Answer:

600 is the answer to the question

The next step is 4004 x 4004. So option(b) is correct

The process of making something less complicated and thus easier to do or understand, or the result of such a process is a simplification.

Reduce the expression to 3/4x + y/2 (4x + 7). The given expression can be written as 3/4x + y/2 (4x) + y/2 using the distributive property.

Given that

44 x 44 = 1936

404 x 404 = 163216

We have to find the next step

In the first step only fours are there

In the next step 0 is included in between the fours

If we follow the same sequence there will be two zeros coming between fours

= 4004 x 4004

= 16032016

Therefore the next step is 4004 x 4004

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Answer:

x=14

Step-by-step explanation:

The value of x is 10, in the diagram, Vertically opposed angles

What is Vertically opposed angles?

Two lines intersecting at a point create vertical angles. Every time they are on an equal footing. Alternatively stated, four angles are created anytime two lines cross or intersect. Two opposed angles are equal and are referred to as vertical angles, as we can see. Due to their position opposite one another, they are also known as "Vertically opposed angles."

Angles that are vertically opposed to one another at a certain vertex are formed by two straight lines intersecting. The equality of the vertically opposed angles has been established.

Here in the diagram 5x = 2y

y = 5X/2

We have 2y+2y+8x = 180 in a straight line.

So 4y+8x = 180

4(5x/2) +8x = 180

10x+8x = 180

x = 180/18

x = 10

Hence, the value of x is 10, in the diagram.

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The fraction of another vial could be filled with the leftover medicine is 125 / 128.

A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers.

In this case, the company receives medicine in 1-gallon (128-ounce) jars and then sells the medicine in vials that hold 3 ounces

The fraction left will be:

= 1 - Amount filled

= 1 - 3/128

= 125 / 128

The fraction left is 125 / 128.

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Answer:

See below

Step-by-step explanation:

Present Value = 400

Period = 1 month      8 years is    n =   96 periods

Interest per period in decimal form     i =  .076 / 12 = .0063333

Fv = PV ( 1 + i)^n  

Fv = 400 ( 1 + .076/12)^96 = 733.29 dollars

Answer: 71

Step-by-step explanation:

First, plug 11 in for x:  y=6(11)+5

Then, multiply 6 by 11:  6(11)=66

Finally, add 5:  66+5=71

The maximum height of the object is 88 feet and the time is 2.25 second(s) after launch

The function is given as

h(t) = -16t² + 72t + 7

Differentiate the above function

So, we have the following representation

h'(t) = -32t + 72

Set to 0

-32t + 72 = 0

So, we have

32t = 72

Divide by 32

t = 2.25

Hence, the time is 2.25 seconds

In (a), we have

t = 2.25

Substitute t = 2.25 in h(t) = -16t² + 72t + 7

h(2.25) = -16(2.25)² + 72(2.25) + 7

Evaluate

h(2.25) = 88

Hence, the maximum height is 88 feet

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The given expression is expressed in the form of 2(x + p)² + q as:

f(x) = (x + 5)² - 21.5

Given,

Express

2x² + 20x + 7

Step 1: Subtract both sides by 7

2x² + 20x = -7

Step: GCF and divide

2(x² + 10x) = -7

x² + 10x = -7/2

Step 3: Complete the Square

x² + 10x + 25 = -7/2 + 25

(x +5)² = 43/2

Step 4: Subtract 43/2 to both sides

(x + 5)² - 43/2

Hence we get the equation.

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The value of x after solution of the equation 8x = -16 is -2 and it is not possible to solve this equation using multiplication.

According to the question,

We have the following equation:

8x = -16

Now, this equation can not be solved using multiplication because 8 is already in multiplication with x on the left hand side. If 8 would have been in division then it could be solved using multiplication.

So, dividing by 8 on both the sides:

x = -16/8

x = -2

Hence, the value of x after solution of the equation 8x = -16 is -2 and it is not possible to solve this equation using multiplication.

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An expression for given sequence of operations is: j + 3^9

In this question, we need to write an expression for the sequence of operations described below.

raise 3 to the 9th power, then add the result to j

Consider the part of given statement,

raise 3 to the 9th power

We write this as: 3^9

then we add this result to j.

So, we get an expression: 3^9 + j

Therefore, an expression for given sequence of operations is: j + 3^9

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The factorized form of the given mathematical phrase 12x to the power of 3 - 4xsquared will be 4x²(3x - 1).

An algebraic factor is the multiplication of two algebraic terms.

The root of the quadratic equation formed by the algebraic factor is always real.

That term could be in form of summation multiplication or in subtraction.

As per the given phrase,

12x to the power of 3 - 4xsquared

12x³ - 4x²

Take x² as common,

x²(12x - 4)

Take 4 as common

4x²(3x - 1)

Hence "The factorized form of the given mathematical phrase 12x to the power of 3 - 4xsquared will be 4x²(3x - 1)".

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Answer:

The 95% confidence interval for the mean tuition for all colleges and universities in the United States is between $15718 and $22882.

Step-by-step explanation:

Sample size greater than 30, which means that we use the normal distribution to find the interval.

We have that to find our  level, that is the subtraction of 1 by the confidence interval divided by 2. So:

α = (1 - 0.95) / 2

  = 0.025

Now, we have to find z in the table as such z has a pvalue of . So it is z with a pvalue of 1 - 0.025 = 0.975.

So, z = 1.96

Now, find M as such

M = z * (σ / √n )

In which σ is the standard deviation of the population and n is the size of the sample.

M = 1.96 * ( 10800 / √35 )

M = 3581.72

M ≈ 3582

The lower end of the interval is the sample mean subtracted by M. So it is 19300 - 3582  = $15718.

The upper end of the interval is the sample mean added to M. So it is  19300 + 3582  = $22882.

The 95% confidence interval for the mean tuition for all colleges and universities in the United States is between $15718 and  $22882.

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Answer:

3: alternate exterior angles 4: supplementary angles

Step-by-step explanation:

3: that are outside and are on dif sides

4: they are interior and add up to 180 degrees

Answer:

376,404 copies sold.

Step-by-step explanation:

To find this answer, divide 33,500 copies by the 8.9%:

33,500 divided by 8.9% = 376404.494382

Now, if we round this number to the nearest whole number, it would be:

376,404 copies sold.

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Answer:

8(4-a)=2a

32-8a=2a

32=10a....dividing through by 10a we get..

32/10=10a/10

3.2=a

answer is 3.2

We know that the problem we are going to be dealing with is an equation. The big question is, what should we do? What steps should be taken to get to the answer? There are several steps. One of them is expanding the equation. We can't solve until we expand the left side. So the way we're going to do it is: the distributive property. This one states that if you have an [tex]a[/tex] term multiplied by the sum of  [tex]b[/tex] and [tex]c[/tex] (the last two terms are in parentheses), then, in a sense, [tex]a[/tex] gets "distributed" and what results is this:

[tex]\darkblue{ab+ac}[/tex]. So now we apply that to our problem: [tex]8(4-a)=32-8a[/tex]. Now we make the replacement: [tex]32-8a=2a[/tex]. Then, notice that we have [tex]a[/tex] terms on both sides. What we do is we subtract [tex]2a[/tex] from the right and left and subtract [tex]32[/tex] from the left and add to the right: [tex]-8a-2a=-32[/tex]. Now let me share a little trick with you. First, we can add the [tex]a[/tex] terms together: [tex]-10a=-32[/tex]. Next, if you have minus signs on both sides, you clear them: [tex]10a=32[/tex]. Now divide both sides by 10. Here another trick comes into play: If you divide by 10 you move the decimal sign 1 place to the left.

[tex]a=3.2[/tex]

Now for the checking - put [tex]3.2[/tex] for [tex]a[/tex] and simplify. The answer should be a statement true for all values of [tex]a[/tex]. Let's go.

[tex]8(4-3.2)=2(3.2)[/tex]

[tex]8(0.8)=6.4[/tex]

[tex]6.4=6.4[/tex] is the result. Since the statement is true, we understand that the solution WAS correct and that [tex]3.2[/tex] IS the value of [tex]a[/tex] in the equation [tex]8(4-a)=2a[/tex].

Trinomials that are perfect square trinomials are (C)  [tex]16z^{4}+48z^{2}+36[/tex] and (D) [tex]9m^{2}+36m+36[/tex].

[tex](a+b)^{2}=a^{2}+2ab+b^{2}[/tex]

We will check every trinomials in given options.

(A) [tex]25a^{2}-40a+64[/tex]

     [tex]25a^{2} = (5a)^{2}[/tex]

     [tex]64 = 8^{2}[/tex]

     [tex]-40a \neq 2(5a)(8)[/tex]

     Hence, its not a perfect square.

(B) [tex]x^{2}-6x-16[/tex]

     [tex]x^{2} = (x)^{2}[/tex]

     [tex]-16 \neq 4^{2}[/tex]

     [tex]-6x \neq 2(x)(4)[/tex]

     Hence, its not a perfect square.

(C) [tex]16z^{4}+48z^{2} +36[/tex]

     [tex]16z^{4} = (4z^{2} )^{2}[/tex]

     [tex]36 = 6^{2}[/tex]

     [tex]48z^{2}=2(4z^{2} )(6)[/tex]

    [tex]16z^{4}+48z^{2} +36 = (4z^{2}+6 )^{2}[/tex]

     Hence, its a perfect square.

(D) [tex]9m^{2}+36m+36[/tex]

     [tex]9m^{2} = (3m)^{2}[/tex]

     [tex]36 = 6^{2}[/tex]

     [tex]36m=2(3m)(6)[/tex]

    [tex]9m^{2}+36m+36 = (3m+6)^{2}[/tex]

     Hence, its a perfect square.

Therefore, only (C) and (D) are perfect square.

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The given statement in mathematical notation is Y≥2.

Given that the statement is Y is greater than or equal to 2.

We want to write the given statement in the mathematical notation.

In algebra, statements basically consist of true or false statements. These mathematical statements can consist of words and symbols.

The greater than in symbolic form is > and greater than or equal to ≥.

As it is given that Y is greater than or equal to 2 can be rewritten as Y≥2.

Hence, the given statement Y is greater than or equal to 2 is Y≥2.

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