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4 years ago

Answer please.tyyyyy

Mathematics

1 answer:

Kazeer [188]4 years ago

4 0

Answer:

30=2r+r

r=5

Step-by-step explanation:

30=2r+r would be the answer for the first question because the red line, 30, is equal to the line 2r and r.

r=7.5 because 30=2r+r (combine like terms)➡️ 15=3r (divide both sides by 3)➡️ 5=r

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A party rental company has chairs and tables for rent. The total cost to rent 2 chairs and 5 tables is $35. The total cost to re

iren [92.7K]

Answer:

A chair costs $2.50 each and a table costs $6 each.

Step by Step Explanation:

First, let's break this down to two equations.

Equation 1: 2c + 5t = 35

Equation 2: 8c + 5t = 38

Let's first solve for "t" (tables) by modifying Equation 1 so that it has the same number of chairs as Equation 2.

To do that, we must times the equation by 4, so:

4(2c + 5t = 35) -> 8c + 20t = 140.

So now the two equations we have are:

1: 8c + 20t = 140

2: 8c + 3t = 38

Now that they have the same number of chairs (8c), we can subtract Equation 2 from Equation 1, and that gets us the following:

17t = 102

t = 102 / 7 = 6.

Therefore, a table costs $6.00 to rent.

Knowing this, we can use either equation to now find "c". Let's use Equation 1.

2c + 5(6) = 35

2c + 30 = 35

2c = 5

c = 5 / 2 = 2.5

So now we know each chair costs $2.50 to rent. Let's use Equation 2 to confirm both the costs of the table and the chair.

8(2.5) + 3(6) = 38

20 + 18 = 38

38 = 38.

Therefore, each chair costs $2.50 and each table costs $6.

3 0

3 years ago

If you live in Chicago, then you live in Illinois

sergij07 [2.7K]

Answer:

yeah thats true

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Omar the tent maker wishes to support a 13.4-ft tent wall by attaching 25-ft cable to the top of it, and then anchoring the cabl

KATRIN_1 [288]

Answer:

21.11 ft

Step-by-step explanation:

This question would be solved using Pythagoras theorem

The Pythagoras theorem : a² + b² = c²

where a = length

b = base

c = hypotenuse

13.4² + b² = 25²

179.56 + b² = 625

b² = 625 - 179.56

b = 445.44

find the square root of 445.44

b = 21.11 ft

3 0

3 years ago

8 meters increased by 28 percent

SCORPION-xisa [38]

What is 8 meters increased by 28%?

Well, first, you need to convert 28% to a decimal by moving the decimal two to the left by dividing by 100

28÷100=.28
or
28%⇒28⇒.28

Then you multiply

8 meters times .28

$8m*.28=2.24$

Then you add 2.24 to 8m (since its the original number)

$2.24m+8m=10.24m$

Your answer is 10.24m

7 0

3 years ago

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Solve (4x – 3) > 5 for x.

dmitriy555 [2]

Answer:

x>2

Step-by-step explanation:

4 0

3 years ago

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