A student find the slope of the line between (8,17) and (1,4)
She writes 17-4/ 1-8. What mistake did she make

Answer:

First day: 45x +20y = 875

Second day: 25x + 40y = 775

Adult ticket price: $15

Step-by-step explanation:

See paper attached. (:

The system of equations that model this scenario is:

45x + 20y = $875 equation 1

25x + 40y = $775 equation 2

The price of adults tickets is $15. The price of student's ticket is $10.

In order to determine this value, multiplot equation 1 by 2 and subtract the resulting equation from equation 2.

90x + 40y = 1750 equation 3

975 = 65x

x = 15

Substitute for x in equation 1

45(15) + 20 = 875

675 + 20y = 875

y = (875 - 675) / 20

y = 10

To learn more about simultaneous equations, please check: https://brainly.com/question/25875552

the solutions are (x = 2) and (y = 4).

To find the values of x and y in the given equations, let's solve them step by step:

1. (3^{2x-y} = 1)

For any nonzero number raised to the power of 0, the result is always 1. Therefore, we can rewrite the equation as:

[2x - y = 0]

Now, we have one equation in terms of (x) and (y).

2.[tex]\( \frac{16^x}{4} = 8^{3x-y} \)[/tex]

We'll simplify the left side first:

[tex]\[ \frac{16^x}{4} = \frac{(4^2)^x}{4} = \frac{4^{2x}}{4} = 4^{2x-1} \][/tex]

Now, the equation becomes:

[4^{2x-1} = 8^{3x-y}]

We know that (8 = 2^3), so we can rewrite the right side of the equation in terms of 2:

[4^{2x-1} = (2^3)^{3x-y} = 2^{9x-3y}]

Now, we have:

[4^{2x-1} = 2^{9x-3y}]

Since (4 = 2^2), we can rewrite the left side as:

[ (2^2)^{2x-1} = 2^{4x-2} ]

So, the equation becomes:

[2^{4x-2} = 2^{9x-3y}]

Since the bases are the same, the exponents must be equal:

[4x - 2 = 9x - 3y]

Now, we have two equations:

[2x - y = 0]

[4x - 2 = 9x - 3y]

From the first equation, we can solve for (y):

[y = 2x]

Substituting (y = 2x) into the second equation:

[4x - 2 = 9x - 3(2x)]

[4x - 2 = 9x - 6x]

[4x - 2 = 3x]

[x = 2]

Now, substituting (x = 2) into the first equation to find (y):

[2(2) - y = 0]

[4 - y = 0]

[y = 4]

So, the solutions are (x = 2) and (y = 4).

Answer:

Equation:

[tex]15=\dfrac{1}{2}x+8[/tex]

Student ticket price = $14

Step-by-step explanation:

An adult ticket = $15

Let a student ticket = $x

An adult ticket is half the price of a student ticket plus $8, then an adult ticket

[tex]=\$\left(\dfrac{1}{2}x+8\right)[/tex]

Equate the prices for the adult ticket:

[tex]15=\dfrac{1}{2}x+8[/tex]

Subtract 8 from both sides:

[tex]15-8=\dfrac{1}{2}x+8-8\\ \\7=\dfrac{1}{2}x[/tex]

Multiply this equation by 2:

[tex]7\cdot 2=x\\ \\x=\$14[/tex]

Answer:

(1/2)x + 8 = 15

Step-by-step explanation:

[tex]\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{-3})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{9}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{9-(-3)}{5-1}\implies \cfrac{9+3}{4}\implies \cfrac{12}{4}\implies 3[/tex]

We have

[tex] \mu = 500[/tex]

[tex] \sigma = 100 [/tex]

425 corresponds to a z of

[tex]z_1 = \dfrac{425 - 500}{100} = -\dfrac 3 4[/tex]

575 corresponds to

[tex]z_2 = \dfrac{575 - 500}{100} = \dfrac 3 4[/tex]

So we want the area of the standard Gaussian between -3/4 and 3/4.  

We look up z in the standard normal table, the one that starts with 0 at z=0 and increases.  That's the integral from 0 to z of the standard Gaussian.

For z=0.75 we get p=0.2734. So the probability, which is the integral from -3/4 to 3/4, is double that, 0.5468.

Answer: 55%

ANSWER

[tex][1, \infty ][/tex]

EXPLANATION

The given functions are:

[tex]a(x) = 3x + 1[/tex]

[tex]b(x) = \sqrt{x - 4} [/tex]

We want to find the domain of the composite function;

[tex](b \circ \: a)(x) = b(a(x))[/tex]

[tex](b \circ \: a)(x) = b(3x + 1)[/tex]

[tex](b \circ \: a)(x) = \sqrt{3x + 1 - 4} [/tex]

This simplifies to,

[tex](b \circ \: a)(x) = \sqrt{3x - 3} [/tex]

This function is defined for

[tex]3x - 3 \geqslant 0[/tex]

[tex]3x \geqslant 3[/tex]

[tex]x \geqslant 1[/tex]

This can be rewritten as,

[tex][1, \infty ][/tex]

Answer:

A rectangle has rotational symmetry of order 2.

Step-by-step explanation:

The rotational symmetry involves rotation.

The rotational symmetry of order is the number of times a shape is mapped onto itself during a 360° rotation.

A rectangle has rotational symmetry of order 2.

When a rectangle is rotated on 180° or 360° it is mapped onto itself.

Answer:

2

180 & 360

Step-by-step explanation:

Answer:

Kilograms

Step-by-step explanation:

Answer:

undefined

Step-by-step explanation:

A line with a slope of zero is a horizontal line parallel to the x- axis

Thus, a line perpendicular to it is a vertical line parallel to the y- axis, with an undefined slope.

Answer:

Option C is correct.

Step-by-step explanation:

A direct variation function is

y/x = k

i.e. we can say that the ratio of y and x is equal to a constant value k.

We will check for each Option given.

Option A

7/2 = 7/2

8/3 = 8/3

9/4 = 9/4

10/5 = 2

11/6 = 11/6

Option D is incorrect as y/x ≠ k as ratio of y/x for each value of table doesn't equal to constant

Option B

-3/2 = -3/2

-5/4 = -5/4

-6/6 = -1

-7/8 = -7/8

-8/10 = -4/5

Option B is incorrect as y/x ≠ k as ratio of y/x for each value of table doesn't equal to constant

Option C

10/-5 = -2

8/-4 = -2

6/-3 = -2

4/-2 = -2

2/-1 = -2

Option C is correct as y/x = k as ratio of y/x for each value in table c is equal to constant value -2

Option D

-3/-2 = 3/2

-3/1 = -3

-3/0 = 0

-3/1 = -3

-3/2 = -3/2

Option D is incorrect as y/x ≠ k as ratio of y/x for each value of table doesn't equal to constant .

SO, Option C is correct.

Answer: OPTION C

Step-by-step explanation:

The function of direct variation has this form:

[tex]y=kx[/tex]

Where k is the constant of variation.

Let's  check if there is a constant of variation on the Options "a" and "b":

On Option A:

 [tex]\frac{7}{2}=3.5\\\\\frac{8}{2}=4[/tex]

On Option B:

[tex]\frac{-3}{2}=-1.5\\\\\frac{-5}{4}=-1.25[/tex]

There is no constant of variation, then these tables do no represent a direct variation.

On the table shown in Option "d" you can observe that "y" does not change when "x" changes. Then it does not represent a direct variation.

Since on the table shown in Option "c":

[tex]k=-2[/tex]

 This table represents a direct variation.

Answer:

x=3 and y=2

Step-by-step explanation:

The pythagorean triples are generated by two integrers x and y that can be found by solving the following system of equations:

[tex]\left \{ {{x^{2}-y^{2}=5}\atop {2xy=12}} \atop {x^{2}+y^{2}=13}}\right.[/tex]

Solve the system of equations, and we get that the solution is x=3 and y=2.

Therefore, the combination of integrers that ca be used to generate the pythagorea triple are: x=3 and y=2

Answer:

[tex]x=3[/tex] and [tex]y=2[/tex]

Step-by-step explanation:

The Pythagorean triples can be generated by two values x, y, and a given system of equations:

[tex]x^{2}-y^{2}=5\\2xy=12\\x^{2}+y^{2}=13[/tex]

You can see that each coordinate of the triple is included in each equation.

Remember that Pythagorean triples refers to the values of each side of a right triangle, where is used the Pythagorean Theorem. But, at a higher level, to construct this triples we use the system of equations, with two integers x and y., like this case.

Now we solve the system, the best first step is to just sum the first and third equations, because they have like terms:

[tex]2x^{2}=18\\x^{2}=\frac{18}{2}=9\\x=3[/tex]

Now, we just replace it in the second equation:

[tex]2xy=12\\y=\frac{12}{2x}=\frac{6}{3}=2[/tex]

Therefore the integers that generate the Pythagorean triple [tex](5,12,13)[/tex] are [tex]x=3[/tex] and [tex]y=2[/tex]

Answer:

The probability is [tex]0.7727[/tex]   or  [tex]77.27\%[/tex]

Step-by-step explanation:

we know that

The probability of an event is the ratio of the size of the event space to the size of the sample space.  

The size of the sample space is the total number of possible outcomes  

The event space is the number of outcomes in the event you are interested in.  

so  

Let

x------> size of the event space

y-----> size of the sample space  

so

[tex]P=\frac{x}{y}[/tex]

In this problem we have

[tex]x=10+7=17[/tex]

[tex]y=10+7+5=22[/tex]

substitute

[tex]P=\frac{17}{22}=0.7727[/tex]

Convert to percentage

[tex]0.7727*100=77.27\%[/tex]

Answer:

32

Step-by-step explanation:

Possible outcomes in a fair sided die 1,2,3,4,5,6 = 6 possible outcomes

Odd numbers = 1,3,5 = 3 odd numbers

Probability of rolling an odd number = [tex]\frac{3}{6}[/tex] = [tex]\frac{1}{2}[/tex]

Total number of rolls = 64

expected number of odd number rolls in 64 roll,

= [tex]\frac{1}{2}[/tex] x 64 = 32

Answer:

10.2 cm²

Step-by-step explanation:

The area (A) of a regular hexagon is

A = [tex]\frac{1}{2}[/tex] × perimeter × apothem

Perimeter = 6 × 2 = 12 cm ( hexagon has 6 sides ), hence

A = 0.5 × 12 × 1.7 = 6 × 1.7 = 10.2 cm²

Answer:

10.2cm^2

Step-by-step explanation:

Answer:

All real numbers

Step-by-step explanation:

f(x) is a polynomial and is well defined for all real values of x

Domain is x ∈ R

The domain of the function[tex]$$f(x)=x^{2}+3 x+5$$[/tex] is (D). All real numbers

It is provided that,

[tex]$$f(x)=x^{2}+3 x+5$$[/tex]

This exists as the equation of a vertical parabola opens upward.

The vertex exists at a minimum

utilizing a graphing tool

The vertex is the point (-1.5,2.75)

The range is the interval -------> [2.75.∞)

[tex]y \geq 2.75[/tex] ------->All real numbers greater than or equal to 2.75

The domain is the interval -------> (-∞,∞) -----> All real numbers

Hence, The domain of the function[tex]$$f(x)=x^{2}+3 x+5$$[/tex] is (D). All real numbers.

To learn more about the Domain of  function refer to:

https://brainly.com/question/13856645

#SPJ2

Answer:

Step-by-step explanation:

The first one I would factor the difference of cubes on top and then cancel a common factor this would end up giving you sin^2(A/2)+sin(A/2)cos(A/2)+cos^2(A/2)

(the 1st+3rd term here actually equals 1)

now you have

1+sin(A/2)cos(A/2)

1+1/2*2sin(A/2)cos(A/2)    (this step was just to help show how I'm going to use the next identity)

1+1/2sin(A)                    (double angle identity for sine)

hint for the next one: I would multiply top and bottom by bottom's conjugate first

Answer:

The correct answer is B. b=3a + 2

Step-by-step explanation:

Plug in the values from column A into each equation and find which one works. In this case, the only option that works is B.

Answer:

see explanation

Step-by-step explanation:

The exponential function is in the form

y = a [tex](b)^{x}[/tex]

Use points on the graph to find a and b

Using (0, 3), then

3 = a [tex](b)^{0}[/tex] ⇒ a = 3

Using (1, 6), then

6 = 3 [tex](b)^{1}[/tex] ⇒ b = 6 ÷ 3 = 2

The equation is y = 3 [tex](2)^{x}[/tex]

Answer:

y = [tex]3*2^{x}[/tex]

Step-by-step explanation:

The general form for an exponential function is :

y = [tex]ab^{x}[/tex]

We need to find out what a and b are using the values given in the graph.

we can see that (x=0, y = 3) and (x=1, y = 6) are points on the curve. Substitute these into the general equation

for (x=0, y = 3),

3 = [tex]ab^{0}[/tex]

3 = a (1)  or a = 3

for (x=1, y = 6),

6 = [tex]ab^{1}[/tex]

6 = ab (substitute a=3 from previous calculation)

6 = 3b

b = 2

Hence the equation is:

y = [tex]3*2^{x}[/tex]

Edit reason: typo in the final answer

Hello There!

The answer is that the Y intercept is 4.

The y intercept is where the graph crosses the y axis. It goes vertical

Answer: the y intercept is 4.

Step-by-step explanation:

In the graph, if the savings account would’ve started with $8, the y intercept would be 8.

We don’t know what the graph is talking about so it’s not the last option.

The line crossed the x intercept at 8 so it’s not B.

The new surface area of a square pyramid when its dimensions are multiplied by 1/3 is calculated by squaring the scale factor (1/3) and multiplying it with the original surface area. In this case, the new surface area is 121 in².

When the dimensions of a square pyramid are multiplied by 1/3, each linear dimension of the pyramid becomes one-third of its original size. Since surface area is a two-dimensional measure (length × width), when you scale down each dimension by a factor of 1/3, the new surface area will be the square of that scale factor times the original area. The surface area is proportional to the square of the scaling factor because area is calculated using two dimensions.

The original surface area is 1,089 in². To find the new surface area, we use the scale factor squared: (1/3) ² = 1/9. We then multiply the original surface area by this factor:

New Surface Area = Original Surface Area × (Scale Factor)²
New Surface Area = 1,089 in² × 1/9
New Surface Area = 1,089 in² / 9
New Surface Area = 121 in²

Therefore, the new surface area of the square pyramid when the dimensions are multiplied by 1/3 will be 121 in².

Answer:

x= -10

Step-by-step explanation:

(3)8+ [tex]\frac{\sqrt{2x+29} }{3}[/tex]= 9(3) (multiply both sides by 3)

24+ [tex]\sqrt{2x+29}[/tex]= 27  (move the 24 to the right)

[tex]\sqrt{2x+29}[/tex]=27-24 (subtract)

([tex]\sqrt{2x+29}[/tex])²= 3²  (square both sides)

2x+29=9 (move the 29 to the other side)

2x=9-29 (subtract)

2x= -20 (divide both sides by 2)

x= -10

hope this helps and good luck! :)

Answer:

Infinitely many solutions

Step-by-step explanation:

There is a solution, but not one, there is an infinite amount of them.

Thats why if you were to graph this it'd just be a line continuously going up

Konichiwa~! My name is Zalgo and I am here to help you out on the marvelous day! The answer to your question is Answer Choice C;Infinitely Many Solutions.

I hope that this helps! :D

"Stay Brainly and stay proud!" - Zalgo

(By the way, do you think you could give me Brainliest? I'd really appreciate it! Have a nice day! :3)

x= y/7 + 2/7

I think thats right

Answer:

you cant do that but the answer would be 0

Step-by-step explanation:

because if you eat something it would be gone in our tummy

Answer:

annual percentage yield

Step-by-step explanation:

APY means annual percentage yield

Answer:

(p-6)(3c + 4)

Step-by-step explanation:

Note that (p-6) is a factor of both terms.  Factoring out (p-6), we get:

(p-6)(3c + 4).

Answer:

There are four sisters and three brothers in the family.

Step-by-step explanation:

Each brother has only half as many brothers as sisters.

1 boy = 4 sisters and 3 brothers

1 girl = 3 sisters and four brothers

Be sure to count the sisters and brothers in total and in terms of their own number of siblings.