can you help me answer this question

Answer:

1 hot dog costs $3.50

Step-by-step explanation:

Represent Hot dog with x and Hamburger with y

Gregory's purchase:

[tex]5x + 2y = 27[/tex] --- (1)

Hart's purchase:

[tex]3x + 4y = 29.5[/tex] ---- (2)

Required

Find x

To do this, we'll make use of the elimination method of solving simultaneous equation.

Start by multiplying (1) by 2

2 * ([tex]5x + 2y = 27[/tex])

This gives:

[tex]10x + 4y = 54[/tex] ---- (3)

Subtract (2) from (3)

[tex]10x + 4y = 54[/tex]

- ([tex]3x + 4y = 29.5[/tex])

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

[tex]7x = 24.5[/tex]

Solve for x

[tex]x = \frac{24.5}{7}[/tex]

[tex]x = 3.5[/tex]

Hence:

1 hot dog costs $3.50

Answer:

1 5/6 or answer C

Step-by-step explanation:

First: Parenthesis  4/5-1/4 or 11/20x 1/2 is 11/40

Bottom: 1/2*4/5 is 2/5 - 1/4 which is 3/20

11/40 *20/3

11/6 or 1 5/6 which would be answer C.

Hope this helps!

Happy Holidays!

Answer:

C

Step-by-step explanation:

top 4/5-1/4 or 11/20x 1/2 = 11/40

bottom 1/2*4/5 is 2/5 - 1/4 = 3/20

Answer:

Constant of variation is: 15

Step-by-step explanation:

r varies directly with p and inversely with the product of s and t

It can be written as:

r ∝ p/st

When the proportionality symbol is removed, a constant is introduced which is called constant of variation

So

[tex]r = \frac{kp}{st}[/tex]

Putting p = 12, t= 2, and s = 5 and r = 18

[tex]18 = \frac{k * 12}{2*5}\\18 = \frac{12k}{10}\\12k = 18*10\\12k = 180\\\frac{12k}{12} = \frac{180}{12}\\k = 15[/tex]

Hence,

Constant of variation is: 15

Answer:

101 fl oz

Step-by-step explanation:

Answer:

101fl

Step-by-step explanation:

Answer:

189

Step-by-step explanation:

If mark uses 19 gallons to travel 399 miles, that means he was able to travel 21 miles per gallon.

We get this by taking 399 divided by 19.

So if mark travels on 9 gallons of gas and goes 21 miles per gallon, he will have traveled 189 miles.

We get this by taking 21 times 9

Answer: $1.33

Step-by-step explanation:

4 divided by 3

Answer:

a. 7

b 8

c 9

d 10

e 10

f 44

Step-by-step explanation:

Answer:

Step-by-step explanation:

4 z ^3 √ y / x ^2 y

Answer:

Its b trust me

Step-by-step explanation:

I did the work lol

Answer:

y = 9/2 or 4.5

Step-by-step explanation: hope this helps :)

x-y= -5   So what you do here is isolate the variables

+y     +y      

x = -5+y

After you do this you input the equation as x

2x+y = -1

2(-5+y) = -1

-10 + 2y = -1

+ 10         +10

2y = -9

/2      /2

y =  9/2 or 4.5

Answer:The race is 111.6

Step-by-step explanation:The race is 111.6 m long.

8 hurdles spaced 12.3 m apart means 7 spaces that are 12.3 m in length; 7*12.3 = 86.1

Add to this the distance to the first hurdle and the distance from the last hurdle:

86.1+15+10.5 = 111.6 m

Step-by-step explanation:

Answer:

If I am incorrect, please let me know.

Step-by-step explanation:

This is the work I did.

Please mark me brainliest :)

Answer:

0.3

Step-by-step explanation:

First you need to add 1/4 and 9/20, and you would get 7/10. That only leaves 3/10, which as a decimal is 0.3.

The decimal that represents the amount of a human bone that is living tissue is 0.3

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We are given that human bone is made up of water 1/4 and 9/20 minerals, and the rest is living tissue.

First we need to add 1/4 and 9/20,

Thus we would get 7/10.

That only leaves 3/10, which as a decimal is 0.3.

The decimal that represents the amount of a human bone that is living tissue is 0.3

Learn more about multiplications;

https://brainly.com/question/14059007

#SPJ2

Answer:

0 solutions

Step-by-step explanation:

4x=4x+1

Answer:

Step-by-step explanation:

△. 1 ... And Now, consider the area of the entire triangle(ADG) = 1/2(AG x DG) = 1/2(3EC x ... The prompt tells us that AB=BC=CD, so AD is 3*CD, so we have DC/DE=3*DC/DG. ... Mar 6, 2019 • Reply. △. 4. Suzanne ashcraft.

Answer:

Step-by-step explanation:

A copy machine can copy a report in 30 mins. When a second copy machine is used at the same time, the copying can be sone in 18 min. How long would it take the second copu machine to do the copying alone?

i have:

x=30

x+y=18

that would be -12..not right?

The time taken that it take the second copy machine to do the copying alone should be considered as the 11.25 minutes.

Let we assume x be the time required at the time when using both machines.

Let us assume the completed job = 1

we know that

copy machine 1 will do [tex]x/30[/tex] of the job

and

copy machine 2 will do [tex]x/18[/tex] of the job

So, it can be like

[tex]\frac{x}{30} + \frac{x}{18} = 1[/tex]

So,

18x + 30x = 540

48x = 540

x = 11.25 minutes

hence, The time taken that it take the second copy machine to do the copying alone should be considered as the 11.25 minutes.

Learn more about time here: https://brainly.com/question/24388291

Answer:

it would be 8\9 if you divide

Step-by-step explanation:

Step-by-step explanation:

hold up bro. this doesn't even say what u actualy have to do . or is just so blurry

Answer:

y = 3x + 2

Step-by-step explanation:

"When x is zero in a direct variation equation y will also be zero. ... Equations of the form y = kx + b where b is a number other than zero are not direct variation equations because when x is zero in any of these y is not zero. Normally direct variation equations are written as y = k•x or just y = kx."

in short, y = 3x + 2 can't be turned into y = kx

you could also immediately tell it's y = 3x + 2 because it includes + 2

Answer:

Median is 3

Step-by-step explanation:

Answer:

Magnitude of claimed earthquake = 10.363 (Approx)

Step-by-step explanation:

Magnitude of claimed earthquake = log√133,680 +  7.8

Magnitude of claimed earthquake = [1/2] log 133,680 +  7.8

Magnitude of claimed earthquake = 2.563 +  7.8

Magnitude of claimed earthquake = 10.363 (Approx)

Answer: ITS A MAGNITUDE 10 EARTHQUAKE 10.363 PERCICELY

Answer:

The answer would be D. 0=2(x-1)squared

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

Answer:

V = 16x²

Width = 12in

Height = 12in

Step-by-step explanation:

Volume of the box is expressed as;

V = Length *Width * height

Given

Length = 16in

Width = x

Height = x

The volume of the box will be expressed as;

V = 16 * x * x

V = 16x² (This gives the required equation)

To get x:

We are given

V = 2304in³

Substitute;

2304 = 16x²

x² = 2304/16

x² = 144

x= √144

x = 12

Hence the width and the height are both 12inches since they are the same.

For the sma

Answer:

this makes no sense where the ACUTAL QUASTION no

Step-by-step explanation:

They need to sell 50 tickets.

Given

The drama club at Creative High School is putting on a performance to raise money for new costumes.

Since they do not have costumes, they will pay $110 to rent costumes.

They plan on charging $5.50 per ticket.

We have to determine

The equation can be used to find the number of tickets, t, they need to sell in order to raise $275.

The charger per ticket is $5.50.

Therefore,

The equation can be used to find the number of tickets, t, they need to sell in order to raise $275.

[tex]\rm t = \dfrac{Amount\ of \ tickets}{Price \ of \ ticket}\\\\t = \dfrac{275}{5.50}\\\\t =50[/tex]

Hence, they need to sell 50 tickets.

To know more about the equation click the link given below.

https://brainly.com/question/18378081

Answer:

36

Step-by-step explanation:

PEMDAS

7+(8)(4)-6/2

Answer:

36

Step-by-step explanation:

7+ 8 * 4-6/ 2

7 + 8( 8*4) - (6/2)

Multiple: 8 * 4 = 32

Add: = 7 + 32 = 39

Divide: 6 / 2 = 3

Subtract: 39 - 3 = 36

9514 1404 393

Answer:

  B.  9

Step-by-step explanation:

This is probably most easily evaluated by finding f(4) and then g(f(4)).

  [tex](g\circ f)(4)=g(f(4))=g(-4^3)=g(-64)\\\\=\left|\\\dfrac{1}{8}\cdot(-64)-1\right|=\left|-\dfrac{64}{8}-1\right|=|-9|\\\\\boxed{(g\circ f)(4)=9}\qquad\textbf{matches B}[/tex]

Answer:

x=−12/5

Step-by-step explanation:

2(1.5x−2)=−0.5(−4x−32)

Step 1: Simplify both sides of the equation.

−2(1.5x−2)=−0.5(−4x−32)

(−2)(1.5x)+(−2)(−2)=(−0.5)(−4x)+(−0.5)(−32)(Distribute)

−3x+4=2x+16

Step 2: Subtract 2x from both sides.

−3x+4−2x=2x+16−2x

−5x+4=16

Step 3: Subtract 4 from both sides.

−5x+4−4=16−4

−5x=12

Step 4: Divide both sides by -5.

−5x−5

=12/−5

x=−12/5