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Andrews [41]
3 years ago
9

Simplify 3(7t-5) - 2t = 4​

Mathematics
1 answer:
Inga [223]3 years ago
4 0

Answer:

Step-by-step explanation:

3(7t - 5) - 2t = 4

3*7t - 3*5 - 2t = 4

21t  - 15   - 2t = 4          {combine like terms}

21t - 2t - 15     = 4

         19t - 15 = 4          {Add  15 to both sides}

            19t    = 4 + 15

            19t     = 19    {Divide both sides by 19}

                   t = 19/19

t = 1

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at an amusement park a person spends $30 on admission and food and then goes on r number of rides that cost $2 each
stepladder [879]
The question is find the equation, in the function and standard notations, that represent the amount spent in the range of 0 to 5 rides.

Constant cost: $30
Independent variable, number of rides: r
Variable cost: $2r

Total spend, s(r): 30 + 2r

Function: s(r) = 30 + 2r, for 0 ≤r ≤ 5  ----- this is the function notation

Standard form: s(r) is the dependent variable = s

s = 30 + 2r => s - 2r = 30 =>

s + (-2)r = 30, for 0 ≤ r ≤ 5 ------ this is the standard form

5 0
3 years ago
The ratio of my action to comedy movies is 4:5. If I have 35 comedy movies, how many are action? *
iogann1982 [59]

Answer:

28 action movies

Step-by-step explanation:

  1. Set up a proportion: \frac{4}{5} = \frac{x}{35}  
  2. Cross multiply, then divide: 35 × 4 = 140, 140 ÷ 5 = 28
  3. So, if you have 35 comedy movies, you would have 28 action movies.

I hope this helps!

8 0
3 years ago
PLEASE HELPPPP!!!!!!
iragen [17]
The correct answer is A no explanation needed it’s just A
4 0
3 years ago
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Lena skied downhill at a steady speed on a 3 mile slope she reached the bottom of the slope in 1/4 hour Lena wants to know her s
gulaghasi [49]

Answer:

first question : 3 / 1/4 ( 3 over 1/4 )

second : 3/1/4 = 12

Step-by-step explanation:

i dont know, i just got it right on iready

3 0
3 years ago
A bakery used 25% more butter this month than last month. If the bakery used 240 kilograms of butter last month, how much did it
gulaghasi [49]

Answer:

30

Step-by-step explanation:

First multiply 240 by 25% then add that value back to 240.

240 x 25% = 60

240+60 = 300

3 0
3 years ago
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