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serious [3.7K]
2 years ago
12

(100 points) HELP ME NOW!!!! NOOOOW!!!!! OR ELSE UR GONNA BE SUPER DUPER SORRY >:)

Mathematics
1 answer:
Zielflug [23.3K]2 years ago
4 0

Answer:

The answer is in the image! The interval notation is [-5,4)

Step-by-step explanation:

Notice that on the linee graph it shows a open circle on 4 and a closed dot on -5... This is because the number can be greater than -5 or equal to(this is represented by the brackets) and on 4 it can only be less than 4 and not equal to it (Represented by parenthesis)...

To solve for the inequality you must solve for x. The easiest way to do this is to multiply each component in the middlee by 3, the add two on both sides, then divide by 9 on both sides. This gives you the simplest inequality at -5<= x <4!

Hope this helps! If you cant open the image let me know!

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Carnival M charges an entrance fee of $5.00 and $0.50 per ticket for rides. Carnival P charges and entrance fee of $7.00 and $0.
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The number of tickets that should be purchased for the cost of both carnival to be equal is 10 tickets.

Assume the number of tickets to be purchased is x.

The expression for the total cost at Carnival M is:

= Entrance fee + (price of tickets x number of tickets)

= 5 + 0.50x

The expression for the total cost at Carnival P is:

= 7 + 0.30x

To find the number of tickers, equate both expressions:

5 + 0.50x = 7 + 0.30x

0.50x - 0.30x = 7 - 5

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= 10 tickets

10 tickets will need to be bought to both Carnivals for the cost to be the same.

<em>Find out more at brainly.com/question/15300985.</em>

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A chef plans to mix 100% vinegar with Italian dressing. The Italian dressing contains 12%
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Answer:

Amount of  vinegar. 100% : 20 milliliters

Amount of  Italian dressing: 140 milliliters

Step-by-step explanation:

Let's call A the amount of  vinegar. 100%

Let's call B the amount of  Italian dressing . 12% vinegar

The resulting mixture should have 23%  vinegar, and 160 milliliters.

Then we know that the total amount of mixture will be:

A + B = 160

Then the total amount of pure antifreeze in the mixture will be:

A + 0.12B = 0.23 * 160

A + 0.12B = 36.8

Then we have two equations and two unknowns so we solve the system of equations. Multiply the first equation by -1 and add it to the second equation:

-A -B = -160

-A -B = -160

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

-0.88B = -123.2

B = \frac{-123.2}{-0.88}

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We substitute the value of B into one of the two equations and solve for A.

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3 years ago
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