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anzhelika [568]
3 years ago
11

Reyna wants to mail a birthday package to her cousin. The post office told her it would take $5.70 in postage to send the packag

e. Reyna has 3 75-cent stamps and 20 45-cent stamps. Which of the following systems of inequalities correctly represents the constraints on the variables in this problem? Let x represent the 75-cent stamps and y represent the 45-cent stamps.
Mathematics
2 answers:
ololo11 [35]3 years ago
8 0
X = # 0.75 stamps y = # 0.45 stamps total postage = $5.70 
Alexeev081 [22]3 years ago
8 0

Answer:

The inequality representing the situation is 0.75x+0.45y\geq 5.70

Step-by-step explanation:

Let x represent the 75-cent stamps.

Let y represent the 45-cent stamps.

The inequality representing the number of stamps Reyna can use to mail the package is 0.75x+0.45y\geq 5.70

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Daniel [21]
The answer is 51
8 1/2x6=51
8 0
3 years ago
Find the value of I in the triangle shown below.<br> T =<br> 56<br> 312
Cerrena [4.2K]

Answer:

93 degrees

Step-by-step explanation:

The angles in a triangle add to be 180 so

180-56-31=x

x=93

8 0
3 years ago
A vacuum had been marked down by 20% and solf for $250. What was the original price of the vacuum?
igomit [66]

Answer:

The original price was $312.50

Step-by-step explanation:

If the vacuum was marked down by 20%, that means it was sold for 80% of the full price. It was sold for $250, so 80% of the original price is $250.

Let's set up an equation.

80/100 of x = 250

0.8 • x = 250

Divide both sides by 0.8.

x = 312.50

The original price was $312.50

Hope this helps!

7 0
3 years ago
Read 2 more answers
The skittles jar has a radius of 3.5 cm and a height of 11.5 cm. using the two given boxes for reference what would be a good es
Bond [772]

C) 1059 skittles

Step-by-step explanation:

We know that the first container held 192 skittles. Knowing the dimension of the container we can calculate the volume of 192 skittles:

Volume of 192 skittles = 5 × 4 × 4 = 80 cm³

Volume of 1 skittle = 80 / 192 = 0.42 cm³

We also know that the second container held 258 skittles. Knowing the dimension of the container we can calculate the volume of 258 skittles:

Volume of 258 skittles = 12 × 3 × 3 = 108 cm³

Volume of 1 skittle = 108 / 258 = 0.42 cm³

We found that the volume of  1 skittle is equal to 0.42 cm³. Now we calculate the volume of the skittles jar:

volume of cylinder = π × radius² × height

volume of skittles jar = 3.14  × 3.5² × 11.5 = 442 cm³

Now we can calculate the number of skittles in the jar:

number of skittles in the jar = volume of the jar / skittle volume

number of skittles in the jar = 442 / 0.42 = 1052 which is close the C) 1059

Learn more about:

volume of cylinder

brainly.com/question/12748872

#learnwithBrainly

7 0
3 years ago
The fastest a human has ever run is 27 miles per hour. How many miles per minute did the human run?
Sophie [7]
9/20 miles a minute or .45 miles a minute
3 0
3 years ago
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