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lord [1]
1 year ago
12

Expand and simplify bracket please quickly

Mathematics
1 answer:
natulia [17]1 year ago
4 0

Answer:

4y²-1/4 is the required answer

Step-by-step explanation:

(2y -  \frac{1 }{2} )(2y +  \frac{1}{2} ) \\ using \: formula \:  {x}^{2}  - y {}^{2}  = (x - y)(x + y) \\ 4y {}^{2}  -  \frac{1}{4}

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(4/52) (4/41) = (16/2,652)

Divide top and bottom by 4:

(16/2,652) = <em>4/663</em> .  That's <em>choice-C </em>.

6 0
3 years ago
You notice a hot air balloon descending. The elevation h
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Answer:

the domain is 0 x 45 and the range is 0 h 360. The slope is -8, so the change in the height of the ballon is -8 feet per second. The h-intercept is 360, so the height of the ballon when the first noticed it was 360 feet. The x-intercept is 45, so the time it took the hot air balloon to reach the ground was 45 seconds.

Step-by-step explanation:

8 0
3 years ago
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We can use ratios and the cross-multiply-divide to find this.



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7 0
3 years ago
A carpenter needs to cut down piece of wood that is 5.6 feet long to 1.71 feet . What is the measurement of the left over piece
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Subtract the two numbers to find the measurement of the leftover piece
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a chef has a recipe that calls for 4 cups of flour. She wants to make 3/4 of the recipe instead of determining directly how many
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8 0
1 year ago
Read 2 more answers
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