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2 years ago

Two and one third plus one and three fourths

Mathematics

1 answer:

hoa [83]2 years ago

8 0

1 * 4 4
2----- 2-----
3 * 4 12
+ 3 * 3 + 9
1----- 1-----
4 * 3 12
------------------------
13
3 -----
12
welcome :/

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-2(3x+9)=-54 AND 2(3x+4) -3x=35 SHOW WORK PLEASE

Naily [24]

Answer:

1. x=6

2. x=9

Step-by-step explanation:

$-2(3x+9)=-54\\-6x-18=-54\\+18 +18\\-6x=-36\\\frac{-6x}{-6} = \frac{-36}{-6}\\x=6$

$2(3x+4)-3x=35\\6x+8-3x=35\\3x+8=35\\-8 -8\\3x=27\\\frac{3x}{3} =\frac{27}{3} \\x=9$

Written Explanation:

-2x(3x+9)=-54

-6x-`8=54 (Distributive property)

Add 18 to both sides

-6x=-36

Divide both sides by -6 (negative divided by a negative equals a positive)

x=6

2(3x+4)-3x=35

6x+8-3x=35 (distributive property)

3x+8=35 (combine Iike terms and then subtract them 6x-3x=3x)

Subtract 8 from both sides

3x=27

Divide both sides by 3

x=9

5 0

3 years ago

What is the value of x? • 7 • 7√2 • 14 • 14√2

MakcuM [25]

Answer:

Step-by-step explanation:

Look at the picture.

We have the triangle 45° - 45° - 90°. The sides are in ratio 1 : 1 : √2.

Therefore we have the equation:

$x\sqrt2=7\sqrt2\qquad\text{divide both sides by}\ \sqrt2\\\\x=7$

7 0

3 years ago

I don't understand exponents

Firlakuza [10]

You must apply the law of exponets.

You must apply only at the same letter. X or Y

$\frac{x^{m}}{x^{n}} = x^{m-n}
$

$\frac{x^{3}}{x^{6}} = x^{3-6} =x^{-3}$

$\frac{y^{3}}{y^{-6}} = y^{(3-(-6))} =y^{3+6}=y^{9}$

$\frac{20x^{3}y^{3}}{32x^{6}y^{-6}} = \frac{20x^{(3-6)}y^{(3-(-6))}}{32}=\frac{20x^{(-3)}y^{(3+6)}}{32}=\frac{20x^{(-3)}y^{(9)}}{32}
$

But
$x^{-n} = \frac{1}{x^{n}}$
Then

$\frac{20x^{3}y^{3}}{32x^{6}y^{-6}} = \frac{20x^{(-3)}y^{(9)}}{32}=\frac{20y^{9}}{32x^{3}}=\frac{10y^{9}}{16x^{3}}=\frac{5y^{9}}{8x^{3}}$

5 0

3 years ago

Which of the following expressions is equal the expression of 4x - 2(3x - 9)

stich3 [128]

4x-6x+18...... The -6x + 18 comes from distributing the -2.

-2x+18

5 0

2 years ago

5 lbs. of organic red potatoes cost $6.00. What is the price per lb?

PSYCHO15rus [73]

Answer:

0.83333333333

Step-by-step explanation: