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3 years ago

Help me please! It’s timed

Mathematics

1 answer:

Scrat [10]3 years ago

3 0

Answer:

x=36.08

Step-by-step explanation:

Given: From the given triangle DEF, ∠E= $90^{0}$

DF=55

and DE= x

To find the value of x

According to trigonometry rule,

$\frac{x}{55} =cos49^{0} \\x=55(cos 49^{0} )\\x=55(0.656)\\x=36.08$

Therefore, the value of x will be 36.08

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Answer:

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Step-by-step explanation:

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3 years ago

Determine the zero of F(x)=x^2+3x-5

IgorLugansk [536]

Answer:

The answer to your question is:

Step-by-step explanation:

x² + 3x - 5

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3 years ago

100 students attended a revision lesson at the weekend.

solniwko [45]

Answer:

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3 years ago

Plutonium-240 decays according to the function where Q represents the quantity remaining after t years and k is the decay consta

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Note: a radioactive decay constant is always negative.

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7 0

3 years ago

Read 2 more answers

Sarah borrowed some money from her father at a simple interest rate of 5.5% to pay for her college tuition. At the end of the ye

gavmur [86]

$\bf ~~~~~~ \textit{Simple Interest Earned Amount}
\\\\
A=P(1+rt)\qquad 
\begin{cases}
A=\textit{accumulated amount}\to &\$2555\\
P=\textit{original amount deposited}\\
r=rate\to 5.5\%\to \frac{5.5}{100}\to &0.055\\
t=years\to &1
\end{cases}
\\\\\\
2555=P[1+(0.055)(1)]\implies \cfrac{2555}{1+(0.055)(1)}=P
\\\\\\
\cfrac{2555}{1.055}=P\implies 2421.800947867 \approx P$

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3 years ago