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4 years ago

9

Write three fractions the cab be written as percents between 50% and 75% justify your solution

1 answer:

Anit [1.1K]4 years ago

6 0

2/3=66% 3/5=60% 5/8=62.5%

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If sin A = 3/8, find the value of cosec A - sec A.

alexira [117]

Answer:

$\csc A - \sec A = \dfrac 83 + \dfrac{8}{\sqrt{55}}\\\\\csc A - \sec A = \dfrac 83 - \dfrac{8}{\sqrt{55}}$

Step by step explanation:

$\text{Given that,}\\\\~~~~~~\sin A = \dfrac 38 \\\\\implies \sin^2 A = \dfrac 9{64}\\\\\implies 1 - \cos^2 A = \dfrac{9}{64}\\\\\implies \cos ^2 A = 1 - \dfrac 9{64}\\\\\implies \cos^2 A = \dfrac{55}{64}\\\\\implies \cos A =\pm\sqrt{\dfrac{55}{64}}\\ \\\implies \cos A = \pm\dfrac{\sqrt{55}}8\\\\$

$\implies \dfrac 1{\cos A} = \pm\dfrac{8}{\sqrt{55}}$

$\text{Now,}\\\\\csc A - \sec A\\\\=\dfrac{1}{\sin A}- \dfrac{1}{\cos A}\\\\=\dfrac 83 -\left(\pm \dfrac 8{\sqrt {55}} \right)\\ \\\text{Hence,}\\\\\csc A - \sec A = \dfrac 83 + \dfrac{8}{\sqrt{55}}\\\\\csc A - \sec A = \dfrac 83 - \dfrac{8}{\sqrt{55}}$

6 0

3 years ago

Select the correct answer.

Oduvanchick [21]

Answer:

I got B too so I sure could be right answer but if it's not then I so sorry. B. 6

8 0

3 years ago

Read 2 more answers

Find the unit rate.<br> 180 miles in 3 hours

leva [86]

Answer:

60 miles per hour

Step-by-step explanation:

First, put the equation in a fraction.

You would put 180 up top because people always say miles per hour not the other way around.

You can see the dividing line as your "per" and your "hour" would be the bottom number.

To find the unit rate, you will divide the numerator (180) and the denominator (3).

Your final answer should be 60 miles per hour.

$\frac{180}{3} = \frac{60}{1}= 60$

3 0

3 years ago

Daley wrote an equivalent equation to determine how many pounds of blueberries he could buy. Analyze Daley’s work. Did he make a

AVprozaik [17]

Answer:

It is D

Step-by-step explanation:

No. He correctly solved for b. EDge 2020 ^-^

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3 years ago

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Please answer asap please take a look at the question explain and please be quick

tatiyna

Answer:

Step-by-step explanation:

52*3:4+1=40 There are 52 weeks in a year, 3/4 of 52= 39 , 1 week longer than it 39+1=40

3 0

3 years ago