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Arlecino [84]
3 years ago
15

What is the first step when solving this equation for t?

Mathematics
2 answers:
Bogdan [553]3 years ago
7 0

Answer:

D. subtract 31 from both sides

you cant combine cuz theyre not like terms and you have to undo the constant number before you undo the second term in the equation so you will end up needing to do letter choice D first.

Step-by-step explanation:

hope this helped a little bit :)

Gala2k [10]3 years ago
3 0
<h3>Answer: D. subtract 31 from both sides</h3>

======================================================

Explanation:

The expression 31-12t is the same as 31+(-12t). Adding a negative is the same as subtracting a positive.

Then we can flip the two terms getting -12t+31. This is because we can add two numbers in any order.

So we're effectively solving -12t+31 = 211

The first step is to subtract 31 from both sides to undo the +31. We follow PEMDAS in reverse to isolate the variable.

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A music store sold a total of 27 used trumpets and clarinets in one month. Trumpets cost $149 and clarinets cost $99. If total s
vodomira [7]
Answer: 16

Solution:

1) Use letters to identify the variables:

Number of trumpets: t
Number of clarinets: c

2) Translate each statement into algebraic (mathematical) language.

2.1) Sold a total of 27 used trumpets and clarinets

=> t + c = 27

2.2) Trumpets cost $149 and clarinets cost $99

Total cost of the trumpets: 149t
Total cost of clarinets: 99c

Total cost = 149t + 99c

2.3) Total sales were $3223

=> 149t + 99c = 3223.

3) State the system of equations:

Equation (1) t + c = 27
Equation (2) 149t + 99c = 3223

4) Solve the system of equations:

4.1) Multiply equation 1 by 149:

=> 149t + 149c = 4023

4.2) Subtract the equation (2) from the equation obtained in 4.1

=> 149c - 99c = 4023 - 3223

=> 50c = 800

=> c = 800 / 50 = 16

5) Verify the solution:

From equation (1) t = 27 - 16 = 11

Total cost = 149*11 + 99*16 = 3223

Now you have a verified answer: they sold 16 clarinets
7 0
3 years ago
Hey! i’ll give brainliest please help.
S_A_V [24]

Answer:

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Step-by-step explanation:

6 0
3 years ago
Can you help me with this?
horsena [70]

Answer:

B

Step-by-step explanation:

it this answer

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3 years ago
Help me plz!
Goryan [66]

Answer:

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Step-by-step explanation:

A = LW

A = 38.1 x 38.1 (since a checkerboard has to be square)

A = 1,451.61

8 0
3 years ago
Five divided by the sum of three times a number and one is equal to 20. find the number
Kipish [7]

Answer:

4

Step-by-step explanation:

5 divided by 3 times

5/5/5=.2

.2*20=4

8 0
3 years ago
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