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2 years ago

Find the difference of 16 5/8 and 12 9/12.

1 answer:

3 0

First find the least common denominator (8), and then subtract. After subtracting you should get 31/8, which as a decimal is 3.875 and as a mixed number is 3 7/8.

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Limit

STatiana [176]

Rationalize the numerator:

$\dfrac{\sqrt{x+4}-2}x\cdot\dfrac{\sqrt{x+4}+2}{\sqrt{x+4}+2}=\dfrac{(\sqrt{x+4})^2-2^2}{x(\sqrt{x+4}+2)}=\dfrac x{x(\sqrt{x+4}+2)}=\dfrac1{\sqrt{x+4}+2}$

This is continuous at $x=0$ , so we can evaluate the limit directly by substitution:

$\displaystyle\lim_{x\to0}\frac{\sqrt{x+4}-2}x=\lim_{x\to0}\frac1{\sqrt{x+4}+2}=\frac1{\sqrt4+2}=\frac14$

5 0

3 years ago

4n+12=4 What does n equal?

solong [7]

Answer:

n = -2

Step-by-step explanation:

4n + 12 = 4

Subtract 12 from both sides.

4n = -8

Divide both sides by 4.

n = -2

3 0

2 years ago

If the side length of a square is 4 inches, it’s area is how many square inches and it’s perimeter is how many inches

riadik2000 [5.3K]

Answer:

The area is 16 inches squared and the perimeter is also 16 inches

Step-by-step explanation:

To find the area, you must multiply the length by the width. Since this is a square, you have to multiply one adjacent side by the other. For perimeter, you can either multiply one side by 4 or add all 4 sides.

6 0

1 year ago

Help??<br> anyone??<br> 7th grade math

Gnoma [55]

Answer:

40 miles

Step-by-step explanation:

4x10 is 40 miles

5 0

2 years ago

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Please help me answer this question, I’ve tried a billion things and I keep getting it wrong

Fantom [35]

Please help with your order with no assistance with your order with order order

3 0

1 year ago