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aleksley [76]
3 years ago
10

Let ∠D be an acute angle such that cosD=0.64. Use a calculator to approximate the measure of ∠D to the nearest tenth of a degree

.
Mathematics
2 answers:
Aleks04 [339]3 years ago
7 0

Answer:

50.2 degreees

Step-by-step explanation:

I did math

sertanlavr [38]3 years ago
4 0

Answer:

50.2°

Step-by-step explanation:

\cos \angle D = 0.64\\\\\angle D = \cos^{-1}(0.64)\\\\\angle D = 50.20818\\\\\angle D \approx 50.2\degree

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anyanavicka [17]

Answer:

2,57 * 10^5 or 257000

Step-by-step explanation:

(5,14 * 10^9) / (2 * 10^4) =

2,57 * 10^5 =

257000

6 0
2 years ago
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Sonali's father age is 5 year 3 times more then Sonali. find out Sonali age if her father age is 44.​
enyata [817]
<h2><u>Given</u></h2>

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<h2><u>What </u><u>To </u><u>Find</u></h2>

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<h3><u>According to the </u><u>question</u></h3>

<u>\boxed{\sf  \: \large\bf{\red{  \implies}} \: \Large\rm{\purple{  3x + 5 = 44}}}</u>

Now , Solving this linear equation.

\begin{cases}\large\bf{\orange{  \implies}} \: \Large\tt{\blue{  3x + 5 = 44}}  \\  \\\large\bf{\orange{  \implies}} \: \Large\tt{\blue{  3x  \:  = \: 44 \:  -  \: 5}} \\  \\\large\bf{\orange{  \implies}} \: \Large\tt{\blue{  3x  \:  =  \:39 }} \\  \\\large\bf{\orange{  \implies}} \: \Large\tt{\blue{  x  \:  =  \:  \frac{39}{3} }} \\  \\  \large\bf{\orange{  \implies}} \: \Large\tt{\blue{  x  \:  =  \:  \frac{ \cancel{39}\rm \tiny{\red{   \:  \:  \small^{13} }}}{ \cancel{3}} }}  \\  \\\large\bf{\orange{  \implies}} \: \Large\tt{\blue{  x  \:  =  \: 13 }}\end{cases}

Hence , the age of sonali is 13 years.

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Answer:

How long did she work for though?

Step-by-step explanation:

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