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3 years ago

5x +12=27 Solving a 2-step equation

Mathematics

2 answers:

Vikentia [17]3 years ago

3 0

Answer:

x = 3

Work below

Step-by-step explanation:

5x + 12 = 27

-12. -12

5x = 15

/5 /5

x = 3

Hope this helps!!

Olegator [25]3 years ago

3 0

Answer:

Step-by-step explanation:

5x+12=27

subtract 12 from 12 and 27 to cancel the 12 you wan your number that has a letter by its self 12-12=0 12-27=15 then you divide what ever number that has a number by whatever number your left with so 15/5=3

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B(1,-7) is correct answer

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3 years ago

Find the equation that is equivalent to the quadratic equation shown. Explain why

zysi [14]

C - (x-3)^2=36

If we expand (x-3)^2=36:

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3 years ago

You invested $3000 between two accounts paying 6% and 7% annual interest respectively if the total interest earned for the year

rusak2 [61]

Answer:

$2000 was invested at 6% and $1000 was invested at 7%

Explanation:

Let:

x= the amount invested at 6% annual interest

y= the amount invested at 7% annual interest

The total amount invested was $3000. So,

x+y =3000

y=3000-x ===> Equation 1

Then, the total interest earned for the year was $190. So,

0.06x+0.07y=190 =====> Equation 2

Substitute y=3000-x into 0.06x+0.07y=190.

$\begin{gathered} 0.06x+0.07y=190 \\ 0.06x+0.07(3000-x)=190 \\ \text{Simplify and rearrange} \\ 0.06x+210-0.07x=190 \\ -0.01x+210=190 \\ 0.01x=210-190 \\ 0.01x=20 \\ x=\frac{20}{0.01} \\ \text{Calculate} \\ x=2000 \end{gathered}$

Substitute x=2000 into x+y =3000.

So,

$\begin{gathered} x+y=3000 \\ 2000+y=3000 \\ \text{Simplify and rearrange} \\ y=3000-2000 \\ \text{Calculate} \\ y=1000 \end{gathered}$

Therefore, $2000 was invested at 6% and $1000 was invested at 7%.

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1 year ago

Of the students in the band, 1/6 play the flute and another 1/6 play the clarinet. What fraction of the students in the band pla

yaroslaw [1]

Answer:

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Step-by-step explanation:

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