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satela [25.4K]
3 years ago
8

3x+6+6x=42 what is x?

Mathematics
2 answers:
Flura [38]3 years ago
5 0

3x+6+6x=42

9x+6=42

9x+6-6=42-6

9x= 36

Divide by 9 for 9x and 36

9x/9=36/9

x=4

Check answer by using substitution method

3(4)+6+6(4)=42

12+6+24=42

42=42

Answer is x=4

tatiyna3 years ago
4 0

Answer:

x = 4

Step-by-step explanation:

Step 1: Combine like terms

9x + 6 = 42

Step 2: Isolate x by subtracting 6 on both sides

9x = 36

Step 3: Isolate x by dividing by 9 on both sides

x = 4

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Nicolas has $6,500 to deposit into an account which earns 3.25% interest compounded annually. How interest will he have earned a
agasfer [191]

We have been given that Nicolas has $6,500 to deposit into an account which earns 3.25% interest compounded annually. We are asked to find amount of interest earned at the end on 8 years.

We will use compound interest formula to solve our given problem.

A=P(1+\frac{r}{n})^{nt}, where,

A = Final amount,

P = Principal amount,

r = Annual interest rate in decimal form,

n = Number of times interest is compounded per year,

t = Time in years.

3.25\%=\frac{3.25}{100}=0.0325

A=6500(1+\frac{0.0325}{1})^{1\cdot 8}

A=6500(1+0.0325)^{8}

A=6500(1.0325)^{8}

A=6500(1.2915775352963673)

A=8395.253979

Now we will subtract principal amount from final amount to find amount of interest as:

\text{interest}=8395.253979-6500

\text{interest}=1895.253979\approx 1895.25

Therefore, Nicolas would have earned $1895.25 in interest at the end of 8 years.

7 0
2 years ago
Gina has 5 2/6 feet of silver ribbon and 2 4/6 of gold ribbon
topjm [15]

Answer:

5 2/6 + 2 4/6 = 8

Step-by-step explanation:

So Gina has 8 feet of ribbon in total.

I hope this is what you were asking for!! :)

Have a good day!

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Answer:

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Step-by-step explanation:

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3 years ago
(6.0x10^5)x(3.0x10^4)=? <br><br> 18x10^20 <br> 18x10^9 <br> 1.8x10^20 <br> 1.8x10^10
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(6.0 x 10^5) x (3.0 x 10^4) = (6 x 3) x 10^(5 + 4) = 18 x 10^9 = 1.8 x 10^10
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Step-by-step explanation: It's 34

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