Answer pls help ill give brainlist !!!!

Mathematics

1 answer:

slega [8]3 years ago

6 0

Answer:

18.54 = x

Step-by-step explanation:

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State the reference angle for -75

boyakko [2]

Check the picture below.

so, the reference angle, will be the angle made by it with the x-axis, namely 75°.

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4 years ago

What is a30 for the arithmetic sequence presented in the table below?

Xelga [282]

$\bf \begin{array}{ll}
n&a_n\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
6&50\\
7&50+d\\
8&50+d+d\\
9&50+d+d+d\\
10&50+d+d+d+d\\
11&50+d+d+d+d+d\\
&35
\end{array}
\\\\\\
50+5d=35\implies 5d=-15\implies d=\cfrac{-15}{5}\implies d=-3
\\\\\\
\textit{we know d = -3, and we know }a_{11}=35\qquad thus$

$\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
d=-3\\
n=11\\
a_{11}=35
\end{cases}
\\\\\\
a_{11}=a_1+(11-1)(-3)\implies 35=a_1+(11-1)(-3)
\\\\\\
35=a_1-30\implies 65=a_1$

now we know what "d" is, and what a₁ is, so let's check the 30th term,

$\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
d=-3\\
n=30\\
a_{1}=65
\end{cases}
\\\\\\
a_{30}=65+(30-1)(-3)\implies a_{30}=65-87\implies a_{30}=-22$

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4 years ago

X-2y=3<br> 4x -8y = 12<br> Substitution

Amiraneli [1.4K]

Answer:

Solution in photo

Step-by-step explanation:

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3 years ago

Which expression is the same as 5÷3?

astraxan [27]

Answer:

Step-by-step explanation:

5/3 in improper fraction would be 1 2/3. This is because three goes into five once hence the one and you still have two over three left. 5/3 is an improper fraction because the numerator is greater than the denominator.

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3 years ago

Read 2 more answers

Solve each inequality 4x-3>1

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3 years ago