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marta [7]
2 years ago
15

5 markers cost \$6.55$6.55dollar sign, 6, point, 55. Which equation would help determine the cost of 444 markers? Choose 1 answe

r: Choose 1 answer: (Choice A) A \dfrac{4}{5} = \dfrac{\$6.55}{x} 5 4 ​ = x $6.55 ​ start fraction, 4, divided by, 5, end fraction, equals, start fraction, dollar sign, 6, point, 55, divided by, x, end fraction (Choice B) B \dfrac{4}{\$6.55} = \dfrac{x}{5} $6.55 4 ​ = 5 x ​ start fraction, 4, divided by, dollar sign, 6, point, 55, end fraction, equals, start fraction, x, divided by, 5, end fraction (Choice C) C \dfrac{5}{4} = \dfrac{x}{\$6.55} 4 5 ​ = $6.55 x ​ start fraction, 5, divided by, 4, end fraction, equals, start fraction, x, divided by, dollar sign, 6, point, 55, end fraction (Choice D) D \dfrac{4}{x} = \dfrac{\$6.55}{5} x 4 ​ = 5 $6.55 ​ start fraction, 4, divided by, x, end fraction, equals, start fraction, dollar sign, 6, point, 55, divided by, 5, end fraction (Choice E) E None of the above Stuck?Watch a video or use a hint.
Mathematics
1 answer:
Ivenika [448]2 years ago
3 0

Answer:

  E  None of the above

Step-by-step explanation:

An appropriate proportion is ...

  \dfrac{4}{5}=\dfrac{x}{\$6.55}

or any of the alternate ways this proportion can be written. None of the offered choices matches this, so it is appropriate to choose ...

  None of the above.

You might be interested in
Which equation is the inverse of y = 2x2 – 8?​
natita [175]

The inverse of the function is y=\pm \sqrt{\frac{x+8}{2}}

Explanation:

To find the inverse of the equation y=2x^{2} -8, we need to interchange the variables x and y for the variables y and x.

Thus, the equation becomes

x=2y^{2} -8

Now, we shall find the value of y.

Now, adding 8 to both sides of the equation, we have,

x+8=2y^{2}

Interchanging the sides,

2y^{2} =x+8

Dividing by 2 on both sides,

y^{2} =\frac{x+8}{2}

Taking square root on both sides,

y=\pm \sqrt{\frac{x+8}{2}}

Thus, the inverse of the function is y=\pm \sqrt{\frac{x+8}{2}}

5 0
2 years ago
Sierra is selling bracelets to raise money for the Language Club at school. Each bracelet with yellow beads sells for $5. Each b
matrenka [14]

Answer:

Correct answer is:

5y+6r=660\\y=2r+8

Step-by-step explanation:

Given that Number of bracelets with yellow beads is represented by y

Each bracelet with yellow beads is sold for $5.

Total money raised by bracelets with yellow beads = Number of bracelets sold \times Money raised by sale of one such bracelet = 5y

Also Given that Number of bracelets with Orange beads is represented by r

Each bracelet with orange beads is sold for $6.

Total money raised by bracelets with orange beads = Number of bracelets sold \times Money raised by sale of one such bracelet = 6r

Given that total money raised by sale of both type of bracelets is $660.

so, the first equation becomes:

5y+6r=660 ....... (1)

It is also given that "<em>The number of bracelets with yellow beads that Sierra sold is 8 more than twice the number of bracelets with orange beads</em>"

\Rightarrow r =2r+8 ...... (2)

So, by equation (1) and (2), the system of equations is:

5y+6r=660\\y=2r+8

5 0
2 years ago
Show that b^2 is greater than equal to or less than ac, according as a, b, c are in A.P., G.P.
ValentinkaMS [17]

Answer/Step-by-step explanation  (ac > b² or b² < ac. )

A/c to question, we have to show:-

b² >ac in A.P ........ (1)

b² = ac in G.P .....(2)

b² < ac in H.P. ..... (3)

b = a+c/2 (A.P)

b = √ac ( G.P)

b = 2ac/a+c (H.P)

In A.P :

b² > ac = b² - ac

= (a+c/2)² - ac

= (a²+2ac+c²/4) - ac  = a² + 2ac + c² - 4ac / 4

= a² - 2ac + c² / 4  = ( a - c ) ² / 4 > 0  Hence, b²>ac

In G.P:-

b = √ac

Hence, b² = ac

In H.P :-  b² < ac = ac > b²  = ac - b²  = ac - ( 2ac / a+c)

= ac(a+c) - 2ac / a+c

= a²c + ac² - 2ac / a+c

= ac(2ac - 2) / a+c > 0

Hence, ac > b² or b² < ac.

5 0
1 year ago
There are 75 people in a room. Of these people, 2/5 are from Germany. If 4/9 of the people who are not from Germany are from Fra
Alex Ar [27]

Answer:

25 people are not from Germany or France.

Step-by-step explanation:

1. You first want find out what is the number of people from Germany.

So you would find...

2/5 of 75

or

2/5*75= 30 people from Germany

2. Next you want to to find out the number of people from France.

So you would do the following...

75-30=45 (Subtract the number of people from Germany from 75 so you can get the total number of people from France and other countries)

4/9 of 45 to find the number of people from France.

4/9 *45= 20

3. Lastly you need to find the people who are from neither of the countries listed above.

Add 30+20= 50

Then subtract that number from 75.

75-50= 25 people who are from neither France or Germany.

Voila! This is your answer. Hope this helps! :)

7 0
2 years ago
riddle me this I'm thinking of a number it is odd is between 1 and 100 is higher than 20 it is smaller than the answer to 6 time
Bogdan [553]
I think it might be 27
6 0
2 years ago
Read 2 more answers
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