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zysi [14]
4 years ago
7

Anybody know this i need help

Mathematics
2 answers:
myrzilka [38]4 years ago
8 0

Since it is given that the triangle is a right angle, and one of the other angles is 30 degrees, then we know that this triangle is a 30, 60, 90 triangle. In a 30, 60, 90 triangle, the opposite side of the shortest angle is half of the hypotenuse (which is given as 6). So knowing this, the value of y would be D. 3.

leonid [27]4 years ago
5 0

it's hlf of an equilateral triangle, so Y = 1/2 6

1/2 * 6 =

3

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A loan of $1,020 was repaid at the end of 18 months with a check for $1,050. What annual rate of interest was charged?
marishachu [46]
We'll be assuming this is with simple interest.

now, a year has 12 months, thus in 18 months there are 18/12 years.

\bf ~~~~~~ \textit{Simple Interest Earned Amount}
\\\\
A=P(1+rt)\qquad 
\begin{cases}
A=\textit{accumulated amount}\to &\$1050\\
P=\textit{original amount deposited}\to& \$1020\\
r=rate\to r\%\to \frac{r}{100}\\
t=years\to \frac{18}{12}\to &\frac{3}{2}
\end{cases}

\bf 1050=1020\left[ 1+r\left( \frac{3}{2} \right) \right]\implies \cfrac{1050}{1020}=1+r\left( \frac{3}{2} \right) \implies \cfrac{35}{34}=1+r\left( \frac{3}{2} \right)
\\\\\\
\cfrac{35}{34}-1=\cfrac{3}{2}r\implies \cfrac{1}{34}=\cfrac{3}{2}r\implies \cfrac{2\cdot 1}{3\cdot 34}=r\implies \cfrac{1}{51}=r
\\\\\\
r\%=100\cdot \cfrac{1}{51}\implies r\approx\stackrel{\%}{1.96078431372549}
8 0
4 years ago
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Dimas [21]
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3 years ago
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Find the common differece of the sequence: 2,9,16,23
riadik2000 [5.3K]
So if 2 is the first term then if n=1 then n+1=sequence so far but

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you must use trial and error to find
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Inessa [10]
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4 years ago
If A=p(1+rt), find the value of t if A=690, p=600 and r=.03
Stolb23 [73]
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