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adell [148]
4 years ago
14

4t + 2 = 7t - 7 What is t?

Mathematics
2 answers:
AveGali [126]4 years ago
7 0

Hey!

Here is the equation:

4t + 2 = 7t - 7

Subtract 4t from both sides. It becomes:

2 = 3t - 7

Add 7 to both sides. It becomes:

9 = 3t

Divide both sides by 3 to leave t alone. It becomes:

\frac{9}{3} = \frac{3t}{3} \\ t = 3

That means t is equal to 3.

<em>Good luck and hope this helps!</em>

jok3333 [9.3K]4 years ago
4 0

To solve this question, we want to get t by itself, on one side. To do that, the first step is the get all terms with 't' on one side and all the constants (numbers) on the other side.

4t + 2 = 7 t - 7

Since the left side has a greater number of t, let's move all of the terms with t there.

4t - 4t + 2 = 7t - 4t - 7

2 = 3t - 7

Now we move the numbers

2 + 7 = 3t - 7 + 7

3t = 9

Now we get t by itself.

3/3t = 9/3

t = 3

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Step-by-step explanation:

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6 0
3 years ago
2х - бу = 2<br>x + бу = 28​
scZoUnD [109]

Answer:

x = 10

y = 3

Step-by-step explanation:

Given

2x - 6y = 2

x + 6y = 28

Add both equations

2x + x -6y + 6y = 2 + 28

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Divide both sides by 3

x = 30/3

x = 10

Substitute 10 for x in either equations to get y

Using equation 2 , we have

x + 6y = 28

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Subtract 10 from both sides

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Divide both sides by by 6

y = 18/6

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7 0
3 years ago
The movie theater sells a total of 100 tickets and makes a total of $880. If the theater charges $6 per child's ticket and $10 p
lutik1710 [3]

Answer:the number of children tickets that were sold is 30.

the number of adult tickets that were sold is 70

Step-by-step explanation:

Let x represent the number of children tickets that were sold.

Let y represent the number of adult tickets that were sold.

The movie theater sells a total of 100 tickets. This means that

x + y = 100

The theater charges $6 per child's ticket and $10 per adult's ticket. The movie theater made a total of $880. It means that

6x + 10y = 880 - - - - - - - - - - -1

Substituting x = 100 - y into equation 2, it becomes

6(100 - y) + 10y = 880

600 - 6y + 10y = 880

- 6y + 10y = 880 - 600

4y = 280

y = 280/4 = 70

x = 100 - y = 100 - 70

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8 0
3 years ago
Mario received 15% of the votes for class president. He got 45 votes. How many people voted in the election?
san4es73 [151]

Answer:

Yikes

Step-by-step explanation:

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6 0
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If the circumference of the circle above is 31.4 units, what is the area? (Use 3.14 for .) A. 62.8 units B. 78.5 units C. 985.96
jenyasd209 [6]

Answer:

78.5 units

Step-by-step explanation:

To find the area of a circle the formula is πr"2"

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6 0
3 years ago
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