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3 years ago

9 and 11 please I need help

Mathematics

1 answer:

dimaraw [331]3 years ago

5 0

9. <span>1.25 = (1 x 1) + (2/10) + (5/100)

11. is ---C----</span>

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If 6 is added to 2 times a certain number, the result is 14. Find the number. Please answer!!

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Step-by-step explanation:

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2 years ago

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ASAP! I really need help with this question! No nonsense answers, and please attach the solution.

uysha [10]

Answer:

$\boxed{\sf Option \ 4}$

Step-by-step explanation:

$\sqrt{2x-3} +x=3$

Subtract x from both sides.

$\sqrt{2x-3} +x-x=-x+3$

$\sqrt{2x-3}=-x+3$

Square both sides.

$( \sqrt{2x-3})^2 =(-x+3)^2$

$2x-3=x^2-6x+9$

Subtract x²-6x+9 from both sides.

$2x-3-(x^2-6x+9 )=x^2-6x+9-(x^2-6x+9)$

$-x^2 +8x-12=0$

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$(-x+2)(x-6)=0$

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$-x+2=0\\-x=-2\\x=2$

$x-6=0\\x=6$

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Plug x as 2.

$\sqrt{2(2)-3} +2=3\\ \sqrt{4-3} +2=3\\\sqrt{1} +2=3\\3=3$

x = 2 works in the equation.

Plug x as 6.

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3 years ago

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2 years ago

The length of a rectangle is 3 1/3 inches. The width is 1/5 of the length. Find the width

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Answer:

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2 years ago

4=1/2(3x+4)<br>solve for x<br>

pogonyaev

Answer:

Step-by-step explanation:

$4 = \frac{1}{2} (3x + 4)$

Multiply through by 2 inorder to eliminate the fraction

That's

$4(2) = 2 \times \frac{1}{2} (3x + 4) \\ 3x + 4 = 8$

Using the subtraction property subtract 4 from both sides of the equation

We have

$3x + 4 - 4 = 8 - 4 \\ 3x = 4$

<u>Divide both sides by 3</u>

We have the final answer as

Hope this helps you

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3 years ago