a model is made of a car. please help.

Answer:

C) horizontal reflection over y-axis and horizontal stretch

Step-by-step explanation:

1a- A vertical reflection over the x-axis occurs when a function [tex]f(x)[/tex] is transformed into [tex]f(-x)[/tex]

1b- A horizontal reflection over the y-axis occurs when a function [tex]f(x)[/tex] is transformed into [tex]-f(x)[/tex]

2a- A function is being compressed if [tex]f(x)[/tex] is multiplied by a positive factor k: [tex]k f(x)[/tex] with [tex]k>1[/tex]

2b- A function is being stretched if [tex]f(x)[/tex] is multiplied by a positive factor k: [tex]k f(x)[/tex] with [tex]k<1[/tex]

In our problem, the original function [tex]f(x)[/tex] is:

- Multiplied by 1/2, so by a factor which is smaller than 1, so we are in case 2b

- Transformed from [tex]f(x)[/tex] into [tex]-f(x)[/tex] (due to the negative sign in front of it), so we are in case 1b

So, overall, we had a horizontal reflection over the y-axis and a stretch of the function.

96 necklaces

To find out how many necklaces Camilla can make, we need to see how many times the required number of beads "goes into" the available number of beads.

Silver: 8160/85 = 96

Black: 2880/30 = 96

Camilla has enough beads to make 96 necklaces.

_____

Comment on this answer

Obviously, if one of the quotients is smaller than the other, Camilla can only make as many necklaces as are supported by the constraining resource.

Even if she had 3000 black beads (way more than 2880), she could still only make 96 necklaces (for example) because she would run out of silver beads making that 96th necklace. (There would be 120 black beads left over in that scenario.)

Answer:

z=-0.35 ( Depending on value given)

Step-by-step explanation:

Let the value be x. For calculation purposes, let us take x as 3.68. ( as mean is 4.68). We may assume a higher value as well. Depends on the given value.

The formula for z score is given as-

z=(value-mean)/Standard Deviation

z=(3.68-4.68)/2.83

z=-0.35

Answer:

C

Step-by-step explanation:

When x = 0, y = 9

When x = 11, y = 3

Find 11 on the horizontal line and go up to the crossing and the follow the line till the y-axis(going to the left direction(. Did you see the 3?

That is the (11 | 3) point

Answer:

Step-by-step explanation:

This is a system of inequalities such that:

[tex]\left \{ {{2x+3y\geq 2} \atop {3x-4y\leq 3}} \right.[/tex]

Let's start by solving for y for both equations:

Equation 1:

[tex]2x+3y\geq  2\\\\3y\geq -2x+2\\\\y \geq \frac{-2x+2}{3}[/tex]

Equation 2:

[tex]3x-4y\leq 3\\\\-4y\leq -3x+3\\\\y\geq -\frac{(-3x+3)}{4}[/tex]

Now if we substitute the 2nd y into the first equation we obtain:

[tex]2x+3(\frac{3x-3}{4}) \geq  2\\\\2x+\frac{9x-9}{4}\geq 2\\\\\frac{8x+9x-9}{4}\geq 2\\\\17x-9\geq 8\\\\17x\geq 17\\\\x\geq 1[/tex]

Now we will solve for the second equation using the first result of y and we obtain:

[tex]3x-4(\frac{-2x+2}{3}\leq 3\\\\3x+\frac{8x-8}{3}\leq 3\\\\\frac{9x+8x-8}{3}\leq 3\\\\17x-8\leq 9\\\\17x\leq 17\\\\x\leq 1[/tex]

And so our solution for the system of equations is:

[tex]x \leq 1\\and \\y\geq \frac{-2x+2}{3}[/tex]

As well as:

[tex]x>1\\and\\y\geq \frac{3x-3}{4}[/tex]

Answer:

Jeff got 20 answers right.

Step-by-step explanation:

The maximum number of points Jeff can get is 100. (25 * 4) However, for each question he gets wrong, he's actually losing 6 points because he doesn't get the four points for getting right, and has the additional -2 points for getting it wrong. Since he only got a score of 70, that means he lost 30 points.

30/6 = 5. So he missed 5 question and got 20 question right.

As per the given values, Jeff got 20 questions right.

Total questions answered = 25

Total points for each correct answer = 4

Total points for each incorrect answer = 2

To find the number of questions Jeff got right, we can set up the equation:

4x - 2(25 - x) = 70,

where x represents the number of questions he got right.

Simplifying the equation, we get -

6x - 50 = 70.

Adding 50 to both sides, we have 6x = 120.

Dividing both sides by 6, we get x = 20.

Therefore, Jeff got 20 questions right.

https://brainly.com/question/40214390

#SPJ2

Answer:

1) By SAS theorem, ΔADE≅ΔCDF

2) By SSS theorem, ΔBDE≅ΔBDF

Step-by-step explanation:

Consider isosceles triangle ABC (see diagram).

1. In triangles ADE and CDF:

By SAS theorem, ΔADE≅ΔCDF.

2. In triangles BDE and BDF:

Be SSS theorem, ΔBDE≅ΔBDF.

Answer:

Two answers are given because the question is "unexpected." cos(θ) = √(3/4) is more commonly seen in such problems than is cos(θ) = (√3)/4, which is what you have written here. Choose the answer that matches your intent.

Step-by-step explanation:

The cosine function is an even function, so cos(θ) = cos(-θ).

The relationship between sin(θ) and cos(θ) is ...

... sin(θ) = ±√(1 -cos(θ)^2)

For sin(θ) < 0 and cos(θ) = (√3)/4, ...

... sin(θ) = -√(1 -3/16) = -√(13/16)

... sin(θ) = -(√13)/4

For sin(θ) < 0 and cos(0) = √(3/4), ...

... sin(θ) = -√(1 -3/4) = -√(1/4)

... sin(θ) = -1/2

Answer:

-√13/4 took the test.

A. Yes, because both points are equidistant from the center of the circle.

The point (0, 5) is 5 units from the point (0, 0).

The point (0, -5) is 5 units from the point (0, 0).

The given points are equidistant from the circle center at (0, 0), so both will lie on the circle—along with any other points that are 5 units from (0, 0).

d. $50.94

The deposit is for 1 year (4 quarters) at an annual rate of 5% (1.25% per quarter). The table value for those parameters is 1.05094. Multiply this value by the $1000 amount Miguel deposited to find his ending balance.

... ending balance = $1000 × 1.05094 = $1050.94

Since his deposit amount was $1000, the interest earned is ...

... $1050.94 -1000.00 = $50.94

Multiplying 3 by a smaller number gives a smaller product.

1/10 is smaller than 10, so 3·(1/10) is smaller than 3·10.

Answer:

1 min and 40 sec

Step-by-step explanation:

well for every ounce it takes 5 sec

5 x 20 = 100

I hope i did this right ^_^

Answer:

100 seconds

Step-by-step explanation:

We are given the following data in the question:

                              Time:      0       30       60       90      120      

Ounces of Bottles filled:      0        6         12         18       24

Where time is in seconds and the bottles are filled in ounces.

Amount of water filled in 30 seconds =  6 ounces

Amount of time taken to fill 1 ounce of water = [tex]\frac{30}{6}[/tex] = 5 seconds

We need to find the time to fill 20 Ounces

It is clear from the data that 18 ounces of water will fill in 90 seconds.

We have to find the time to fill 2 ounces of water.

Time taken to fill two ounces of water = [tex]2\times 5[/tex] seconds = 10 seconds.

Total time taken to fill 20 ounces of water =  990 + 10 = 100 seconds =  1 Minute 40 Seconds

Answer:

hyperbola

Step-by-step explanation:

49x^ 2 - 16y^ 2 = 784

Divide each side by 784

49/784x^ 2 - 16/784y^ 2 = 784

x^2/16 - y^2/49 = 1

This is a hyperbola  centered at (0,0)

If it has subtraction, it has to be a hyperbola

Answer:

Thus, The conic which fits the given equation correctly is hyperbola

Step-by-step explanation:

The equation is given to be : 49x² - 16y² = 784

Now, we need to find the correct conic section which fits this given equation

So, to find the correct conic, we will reduce the given equation into the standard form :

So, make R.H.S. 1 by dividing each term by 784

[tex]\frac{49x^2}{784}-\frac{16y^2}{784}=\frac{784}{784}[/tex]

[tex]\implies \frac{x^2}{16}-\frac{y^2}{49}=1[/tex]

[tex]\implies\frac{x^2}{4^2}-\frac{y^2}{7^2}=1[/tex]

This is the standard equation of hyperbola, where a = 4 and b = 7

Thus, The conic which fits the given equation correctly is hyperbola

You may solve this problem in two ways:

If you solve the inequality explicitly (divide both sides by 4), you get

[tex] \dfrac{4n}{4} < \dfrac{16}{4} \iff n < 4 [/tex]

So, if [tex] n [/tex] has to be stricktly less than 4, you can only choose 1, 2 and 3 as answers.

Alternatively, you can plug in all of the values you're proposed and check if the inequality holds:

If [tex] n=1 [/tex], you have [tex] 4<16 [/tex], which is true.

If [tex] n=2 [/tex], you have [tex] 8<16 [/tex], which is true.

If [tex] n=3 [/tex], you have [tex] 12<16 [/tex], which is true.

If [tex] n=4 [/tex], you have [tex] 16<16 [/tex], which is false.

So, again, only 1, 2 and 3 are solutions.

Answer:

x = 1 and y = 5

Step-by-step explanation:

Use substitution because you know that x = y - 4, and plug this into the first equation to get -10(y - 4) + 3y = 5, or -10y + 40 + 3y = 5. This is -7y = -35 so y = 5. Plug this into the 2nd equation to get that x = 1 and y = 5.

Answer:

(16 + 8√3) in²

Step-by-step explanation:

The ratio of side dimensions for a 30°-60°-90° triangle are 1 : √3 : 2. If we call the horizontal dimension of the triangle its base, then its height (vertical dimension) will be √3×4 in. Of course the area of the triangle is ...

... A = (1/2)bh = (1/2)(4 in)(4√3 in) = 8√3 in²

The total sod area is the sum of the square area (16 in²) and the triangle area, so is ...

... area to cover = (16 +8√3) in²

_____

Comment on problem dimensions

The area involved here is not much larger than the size of your hand. It would make more sense for the dimensions to be in feet or yards or meters, rather than inches.

Answer: 29.9 in.

Step-by-step explanation:

16+(8*√3)

Answer:

36 and 24

Step-by-step explanation

36 - 24 = 12

36 + 24 = 60

We have the triangle 30° - 60° - 90°.

The sides are in proportion: 2 : √3 : 1

(look at the picture).

[tex]2a=14[/tex]       divide both sides by 2

[tex]a=7[/tex]

[tex]a\sqrt3=7\sqrt3[/tex]

The area of a trinagle AFD:

[tex]A_{\Delta}=\dfrac{1}{2}(7)(7\sqrt3)=\boxed{\dfrac{49\sqrt3}{2}}[/tex]

The area of a triangle ADF is 42.46 square units.

The sides and angles of a right-angled triangle are dealt with in Trigonometry. The ratios of acute angles are called trigonometric ratios of angles. The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).

Given that, in ∆ADF, m∠F=90°, AD = 14 and m∠D=30°

We know that, sinθ= Perpendicular/Hypotenuse

Now, sin A=FD/AD

sin60°=FD/14

⇒ √3/2 = FD/14

⇒ FD=7√3

sin30°=FA/AD

⇒ 1/2 =FA/14

⇒ FA=7

We know that, area of a triangle is 1/2 ×Base×Height

Area of ∆ADF

= 1/2 ×FD×FA

= 1/2×7√3×7

= 42.46 square units

Therefore, the area of a triangle ADF is 42.46 square units.

Learn more about the trigonometric ratios here:

brainly.com/question/25122825.

#SPJ2

Answer:

8x2 or (8)(2)

Step-by-step explanation:

The value of 1 hour is 2 widgets, in 8 hours simplified would lead to 8x2 which is 16 widgets.

This leaves you with 16 widgets made in 8 hours.

Frank can make 16 widgets by working 8 hours a day.

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given that at Frank's work he can produce 2 widgets every hour.

Thus if he produce 2 widgets in one hour, using Unitary method

In 1 hour Frank can make 2 widgets.

Thus in 8 hour work, Frank can make (2 * 8) widgets.

In 8 hour work, Frank can make 16 widgets.

To learn more about Unitary method, refer -

https://brainly.com/question/26548578

#SPJ2

The midpoint between (-1+9i) and B=(5-3i) is (2+3i).

The midpoint between (-1+9i) and B=(5-3i) can be found by taking the average of the real and imaginary parts separately.

For the real part, we take the average of -1 and 5 which is 2. For the imaginary part, we take the average of 9i and -3i which is 3i.

Therefore, the midpoint between (-1+9i) and B=(5-3i) is (2+3i).

The third-degree polynomial with – 3 and 2 as its only zeros is x³ + x² – 8x – 12, which can be factored as (x+3)(x-2)(x-2).

A third-degree polynomial with – 3 and 2 as its only zeros must be in the format of A(x+3)(x-2)(x-C), where A and C are constants, and C is possibly another zero of the polynomial.

Given the four options, the only polynomial that fits this format and has – 3 and 2 as zeros is x³ + x² – 8x – 12.

To verify, we can factor it: (x+3)(x-2)(x-2), which shows that 2 is a zero of multiplicity 2, and – 3 is also a zero.

There are no other real zeros besides these, so it is the correct polynomial.

Final answer:

Ramona rode rides at a rate of 2 rides per hour during her visit to the theme park.

Explanation:

Ramona's Rate of Riding Rides:

Rate = Number of rides ÷ Number of hours

Rate = 14 rides ÷ 7 hours

Rate = 2 rides per hour

D) 10.2 ft

The mnemonic SOH CAH TOA reminds you that

... Sin = Opposite/Hypotenuse

You want to find the length of the side Opposite the 50° angle, given the Hypotenuse is 12 ft. Then the relation is ...

... sin(50°) = height/(12 ft)

Multiplying by 12 ft gives

... height = (12 ft)·sin(50°) ≈ 9.2 ft

The height of the platform is 1 ft up from this value:

... 9.2 ft + 1 ft = 10.2 ft

Answer:

27 and 40

Step-by-step explanation:

Final answer:

The sum of two numbers is 67 and the difference is 13. The two numbers are 40 and 27.

Explanation:

Let's solve this problem step by step:

Therefore, the two numbers are 40 and 27.

Answer:

Printer cost 265

Computer cost 795

Step-by-step explanation:

1060 / 4 = 265

he cost of the printer is $265, and the cost of the computer is $795.

The question involves solving a system of equations to find the cost of two items based on their total cost and the ratio of their costs. To find the cost of a computer and a printer, we can set up the equations based on the given information: the total cost is $1060, and the cost of the computer is three times the cost of the printer.

Let's define C as the cost of the computer and P as the cost of the printer. According to the problem, we have two equations: C + P = $1060 (total cost) and C = 3P (cost relationship). We can substitute the second equation into the first to find P: 3P + P = $1060, so 4P = $1060. Dividing both sides by 4, we get P = $265. Using this value, we can find C by multiplying P by 3, giving us C = 3 * $265 = $795.

Thus, the cost of the printer is $265, and the cost of the computer is $795.

Answer:

10.8 units

Step-by-step explanation:

As the equation represents the area of a rectangle

i.e.

length * width = Area

Now area is 285.12 units square

while length is 26.4

and width is represented by w

now putting in the formula it will become

26.4 * w = 285.12

dividing both sides by 26.4

[tex]\frac{26.4w}{26.4}=\frac{285.12}{26.4}[/tex]

this will become

w = 10.8 units

Which is the required width of the Rectangle

so answer is 10.8 units

Answer:

y = 2 3/8

Step-by-step explanation:

Multiply by the denominator. This gives a linear equation that can be solved in the usual way.

... 3 = 8(y -2)

Divide by 8.

... 3/8 = y - 2

Add 2

... 2 3/8 = y

_____

In problems involving rational expressions, it often works well to multiply by the product of the denominators, or by their least common multiple, if that is easy to find. Doing this eliminates fractions. Here there is only one denominator (y-2), so we multiply by that.

A graph is attached

The equation is in slope-intercept form:

...  y = mx + b

Here, the value of m (the slope) is 1/2, and the value of b (the y-intercept) is -3.

This means that point (0, -3) is a point on the graph. This point is on the y-axis, 3 units below the x-axis.

Slope is sometimes referred to as "rise over run." The slope of 1/2 means the line will rise 1 unit for each 2 units to the right. That is, for some point (x, y) on the ine, another point will be found at (x+2, y+1).

Given a point at (0, -3), another point will be (0, -3) +(2, 1) = (2, -2), and another point will be (2, -2) +(2, 1) = (4, -1).

You can plot as many points as you like, then draw the line through them.

Answer:

So, our rate of exponential growth is is 6.93 %

Step-by-step explanation:

The formula for exponential growth rate is

A = P[tex]e^{rt}[/tex] .... (1

Here

P = is the initial investment

A = amount after certain time

As we are given after 10 years (t = 10) the investment doubles

so plugging A=2P and t= 10 into equation (1)

2P = P[tex]e^{10r}[/tex]

cancelling P on both sides

2 = [tex]e^{10r}[/tex]

taking natural log on both sides

ln (2) = ln ([tex]e^{10r}[/tex]

ln(2) = 10r(lne)

as ln(e) = 1

ln (2) = 10r

r = [tex]\frac{ln(2)}{10}  [/tex]

solving the natural log

r = 0.0693

or

r =6.93 %

So, our rate is 6.93 %