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Arturiano [62]
2 years ago
8

......................,.,................​

Mathematics
1 answer:
Alex787 [66]2 years ago
4 0

a=6, b=2

Step-by-step explanation:

Use simplification into substitution
\frac{a}{3} =1+\frac{2}{b}

a=3(1+\frac{2}{b})

a=3+\frac{6}{b}

We can now plug this value of <em>a</em> into the second equation.

\frac{3+\frac{6}{b} }{4} +\frac{3}{b} =3

Get rid of fractions in the numerators and/or denominators

\frac{3b+6}{4b} +\frac{3}{b} =3

Then we can match the denominators

\frac{3b+6}{4b} +\frac{12}{4b} =3

Combine

\frac{3b+18}{4b} =3

Divide both sides by three

\frac{b+6}{4b} =1

Get rid of fractions

b+6=4b

Single out <em>b</em>

6=3b

b=2

Now we can plug it into the equation

\frac{a}{3} -\frac{2}{2} =1

\frac{a}{3} =2

a=6

Now we can check it;

\frac{6}{3} -\frac{2}{2} =1

↑CORRECT

\frac{6}{4} +\frac{3}{2} =3

↑CORRECT

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Answer:

no

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Question:
Tamiku [17]

Answer:

<h2>      x₁ = - 2 + √2 ,   x₂ = - 2 - √2</h2>

Step-by-step explanation:

3x^2 + 12x + 6 = 0\\\\a=3\,,\ b=12\,,\ c=6\\\\\\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\ x=\dfrac{-12\pm\sqrt{12^2-4\cdot3\cdot6}}{2\cdot3}=\dfrac{-12\pm\sqrt{144-72}}{2\cdot3}=\dfrac{-12\pm\sqrt{72}}{2\cdot3}=\dfrac{-12\pm6\sqrt{2}}{6}\\\\x_1=\dfrac{6(-2+\sqrt{2})}{6}=-2+\sqrt2\\\\x_2=\dfrac{6(-2-\sqrt{2})}{6}=-2-\sqrt2

8 0
2 years ago
Solve for x.
Doss [256]

Answer:

x= 16

Step-by-step explanation:

First, you want to distribute each side! (you're gonna wanna learn this because you will be having to do it for the next 3 years no joke it sucks)

7(x+2) can be distributed as 7x+14 after multiplying 7 times x and 7 times 2, and 6(x+5) can be distributed as 6x+30.

Now, you have to get the x on one side to solve for x (so like x=__).

To do this, look at the equation as of now. 7x+14=6x+30.

We can minus 14 and bring that to the right, and minus 6x and bring that to the left to separate the x's and the regular numbers.

Now we have  16=x (or x=16).

5 0
2 years ago
3. Put the following numbers in order
PtichkaEL [24]

Answer:

3.85 x 10-7

8.53 x 10-5

0.00000538

3.58 x 10-6

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Tara received 28 out of 35 points on her last math test. What percentage score did the teacher record in her grade book for Tara
ZanzabumX [31]

Answer:

80%

Step-by-step explanation:

28/35 = 0.8

Divide. Convert a decimal to a percent by multiplying times 100.

0.8 × 100 = 80

Tara earned an 80%

You could use a calculator as described above or using mental math or pencil and paper:

28/35 = 4/5

Simplify.

4/5 = 8/10 = 80/100

Percent means per hundred, change 28/35 to hundredths as above.

Tara (still) gets an 80%.

4 0
1 year ago
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