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e-lub [12.9K]
2 years ago
6

Help me with this algebra.(i put a Picture with it)​

Mathematics
2 answers:
zysi [14]2 years ago
7 0

Answer:

Luke is wrong because 4r + 5 + 2r = 6r+5.

You can only add numbers with the same variable, 4r and 2r have the same variable so they can be added while 5 does not have a variable, this means it cannot be added to 4r and 2r.

Step-by-step explanation:

4r + 5 + 2r

4<u>r</u> + 2<u>r</u> + 5

6r + 5

Fantom [35]2 years ago
5 0

Answer:

no Luke is not correct.

Step-by-step explanation:

4r + 5 + 2r \\ colecting \: like \: terms \: \\ 4r + 2r + 5 \\ 6r + 5

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X = adult tickets
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14.88 for adults
8.88 for children

14.88x + 8.88y = total for x amount of adult tickets purchased and y amounts of child tickets purchased.

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3 0
3 years ago
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Greg is 10 years older than his brother gabe.he is also 3 times as old as gabe.how old is gabe
Elza [17]

Answer:

The answer is below

Step-by-step explanation:

Let us assume that the age of Greg's brother (Gabe) is x years, and let Greg's age by y years. Since Greg is 10 years older than his brother gabe, then:

y = x + 10           (1)

Also. Greg is 3 times as old as Gabe, hence:

y = 3x                 (2)

From equation 1 and equation 2:

y = x + 10 = 3x

Hence:

3x = x + 10

Subtracting x from both sides gives:

3x - x = x + 10 - x

2x = 10

Dividing by 2:

2x/2 = 10/2

x = 5 years

y = x + 10 = 5 + 10 = 15 years

Therefore Gabe is 5 years old and Greg is 15 years old

8 0
3 years ago
The clock has a diameter of 18 inches. At 8 o'clock, what is the area of the sector formed by the two hands of the clock? Round
Drupady [299]

Answer:

The area of the sector is 84.8 in.² to the nearest tenth

Step-by-step explanation:

∵ the clock is a circle

∴ The measure of angles between each two hours = 360° ÷ 12 = 30°

∵ At 8 o'clock the hour hand pointed on 8 and the minute hand pointed on 12

∴ There are 4 angles between the two hands

∴ The central angle subtended by the arc = 4 × 30° = 120°

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∴ Area sector = \frac{120}{360} × π × (18/2)²

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Answer:

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