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3 years ago

How can you use multiplication to divide one fraction by another?

Mathematics

1 answer:

Fed [463]3 years ago

5 0

Multiplying is the inverse for division

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X^2 + 1/2x + = 2 + Help please

Gennadij [26K]

Answer:

Step 2:

For Completing the square,

$(\frac{1}{2} coefficient\ x)^{2} =(\frac{1}{2}\times \frac{1}{2})^{2}=\frac{1}{16}$

Add half coefficient of x square on both the side we get

$x^{2}+\dfrac{x}{2}+\frac{1}{16}=2+\frac{1}{16}$

Step-by-step explanation:

Solve:

$2x^{2}+x-4=0$

$2x^{2}+x=4$

Solution:

Step 1:

Dividing both the side by two we get

$x^{2}+\dfrac{x}{2}=2$

Step 2:

For Completing the square,

$(\frac{1}{2} coefficient\ x)^{2} =(\frac{1}{2}\times \frac{1}{2})^{2}=\frac{1}{16}$

Add half coefficient of x square on both the side we get

$x^{2}+\dfrac{x}{2}+\frac{1}{16}=2+\frac{1}{16}$

Step 3:

We know $(a +b)^{2} = a^{2}+2ab +b^{2}$

$(x+\frac{1}{4})^{2}=\frac{33}{16} \\ \\(x+\dfrac{1}{4})=\pm \sqrt{\dfrac{33}{16}} \\\\x=-\dfrac{1}{4}\pm \sqrt{\dfrac{33}{16}}$

6 0

4 years ago

Trey sold t-shirts and hats at a festival. His total profit was $106. He made a $4 profit for each t-shirt he sold. He also made

marta [7]

Answer:

18 t-shirts.

Step-by-step explanation:

Trey made a total profit $106 by selling t-shirts and hats. $34 of that profit was from selling hats, subtract 34 from 106 and you will get 72. So he made a profit of $72 in selling t-shirts. The t-shirts were $4 each, so if you divide 72 by 4 you will get 18. Meaning he sold 18 shirts.

5 0

4 years ago

Plzzzz I NEED help with 9 and 10 plzzzzz

jeyben [28]

Question 9:

$\frac{20*(5)}{50}$ Simplify what is in the parenthesis

$\frac{100}{50}$ Multiply 20 to 5

$2$ Divide 50 to 100

*(Answer)*= $2$

Question 10:

$5+(18)$ ÷ $6$ Simplify what is in the parenthesis

$5+3$ Divide 6 to 18

$8$ Add 5 to 3

*(Answer)*= 8

Hope this helps

User who answered: BangtanBoyScouts

4 0

4 years ago

Using diagonals from a common vertex, how many triangles could be formed from a 20-gon?

vodka [1.7K]

Answer: 320 triangles

Step-by-step explanation: Triangles can be drawn utilizing one side of the polygon. In the event that we take one side, at that point there are a add up to of 16 triangles that can be drawn and we have 20 sides. So, add up to 20×16=320 triangles.

8 0

3 years ago

the ordered pair (1, 4) is a solution to the system of equations true or false HELPPPPP!!!! (picture attached)

stiv31 [10]

True because you need to plug in x and y

3 0

3 years ago

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