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navik [9.2K]
4 years ago
9

How to solve linear equations with inverse operations in each step

Mathematics
1 answer:
PilotLPTM [1.2K]4 years ago
6 0
Number one would be 13 because you have to add the x to both sides which will leave you with 2x=26 then you have to divide by 2 and you will get x=13. Number two is 7 7/8 because you have to add the 1/3x to the other 1/3x to get 2/3x= 5 1/4 so then you divide both sides by 2/3 and to divide a fraction you do keep change flip so it would be 21/4 times 3/2 which would be 63/8 which simplifys to 7 7/8.
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Simplify the expression 6 + (12 + x).<br> 6+ (12 + x) = 0<br> I really need helppp
Alex73 [517]

Answer:  x= -63/4, 15 3/4 or 15.75 in decimal form

Step-by-step explanation: Symbolab is a good calculator

5 0
3 years ago
Rachel runs 3.2 miles each weekday and 1.5 miles each day of the weekend. How many miles will she have run in 6 weeks?
Mandarinka [93]

Rachel will have ran 114 miles in six weeks.

There's five weekdays in a week: (3.2 x 5) = 16 miles

There's two days in a weekend: (1.5 x 2) = 3 miles

16 [weekday] + 3 [weekend] = 19 miles [7-day week]

(19 x 6) = 114 miles

Hope this helps, please mark brainliest. Have an amazing rest of your day and stay safe! xx

4 0
3 years ago
Total sales of the Desert Markets were $10,150,000 two years ago and $1 4,250,000 last year. If the same trend continues, what a
Assoli18 [71]

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8 0
3 years ago
Write an exponential function whose graph passes through the given points (0, - 2) and (- 1, - 4)
melamori03 [73]

Answer:

y = 2(0.5) {}^{x}

Step-by-step explanation:

Use the general formula of exponential equation

y = ab {}^{x}

Plug 0,2 into the function

- 2 = ab {}^{0}

- 2 = a \times 1

a =  - 2

y =  - 2b {}^{x}

- 4 =  - 2b {}^{ - 1}

2 = b {}^{  - 1}

{2}^{ \frac{ 1}{ - 1} }

2 {}^{ - 1}  = 0.5

B=0.5

y = 2(0.5) {}^{x}

3 0
3 years ago
Envelopes cost $7.85 / box . How many boxes did Shawna buy if she spent $23.55?
Novosadov [1.4K]
Three boxes, if you divide 23.55 by 7.85 you get the total of 3
6 0
3 years ago
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