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svlad2 [7]
3 years ago
15

I have no idea what I am doing

Mathematics
2 answers:
AlekseyPX3 years ago
7 0

Answer:

QPR = 30 degrees

mixas84 [53]3 years ago
7 0

You have to find the measure of angle QPR.

Solve:

40 = 8x + 7 + 9x + 16

Add like terms

40 = 17x + 23

Solve

40 - 23 = 17x + 23 - 23

17 = 17x\\\frac{17}{17} = \frac{17}{17}x\\1 = x

Plug in x to solve for the angle measure of QPR

9(1) + 16 =\\9 + 16 =\\25

The angle measure of QPR is 25°

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What is 2,731 divided by 31 with a remainder
masha68 [24]

Answer:?

Step-by-step explanation:

not sure..

4 0
3 years ago
What the recursive formula for the sequence
klemol [59]

\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} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ a_n=2-5(n-1)\implies a_n=\stackrel{\stackrel{a_1}{\downarrow }}{2}+(n-1)(\stackrel{\stackrel{d}{\downarrow }}{-5})


so, we know the first term is 2, whilst the common difference is -5, therefore, that means, to get the next term, we subtract 5, or we "add -5" to the current term.

\bf \begin{cases} a_1=2\\ a_n=a_{n-1}-5 \end{cases}


just a quick note on notation:

\bf \stackrel{\stackrel{\textit{current term}}{\downarrow }}{a_n}\qquad \qquad \stackrel{\stackrel{\textit{the term before it}}{\downarrow }}{a_{n-1}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{current term}}{a_5}\qquad \quad \stackrel{\textit{term before it}}{a_{5-1}\implies a_4}~\hspace{5em}\stackrel{\textit{current term}}{a_{12}}\qquad \quad \stackrel{\textit{term before it}}{a_{12-1}\implies a_{11}}

8 0
4 years ago
What is the seventh term of the geometric sequence with a first term of 729 and a common ratio of ?
SVEN [57.7K]

<u>Given</u>:

Given that the first term of the geometric sequence is 729.

The common ratio is \frac{1}{3}

We need to determine the seventh term of the sequence.

<u>Seventh term</u>:

The seventh term of the sequence can be determined using the formula,

a_n=a_1(r)^{n-1}

To find the seventh term, let us substitute n = 7 in the above formula, we get;

a_7=a_1(r)^{6}

Now, substituting a_1= 729 and r=\frac{1}{3}, we get;

a_7=729(\frac{1}{3})^{6}

a_7=729(\frac{1}{729})

a_7=1

Thus, the seventh term of the geometric sequence is 1.

8 0
3 years ago
Help thanksSSSSSSSSSS
Setler79 [48]

Answer:

  • \boxed{\sf{x=24}}

Step-by-step explanation:

<u>GIVEN:
</u>

To find the missing number in the proportion, you have to isolate it the term of x from one side of the equation.

\sf{\dfrac{8}{7}=\dfrac{x}{21}  }

First, thing you do is switch sides.

\sf{\dfrac{x}{21}=\dfrac{8}{7}  }

Multiply by 21 from both sides.

\Longrightarrow: \sf{\dfrac{21x}{21}=\dfrac{8*21}{7} }

Solve.

Multiply the numbers from left to right.

Use the order of operations.

PEMDAS stands for:

  • Parentheses
  • Exponents
  • Multiply
  • Divide
  • Add
  • Subtract

\Longrightarrow: \sf{\dfrac{8*21}{7}=\dfrac{168}{7}=24 }

\Longrightarrow: \boxed{\sf{x=24}}

  • <u>Therefore, the final answer is x=24.</u>

I hope this helps. Let me know if you have any questions.

3 0
2 years ago
4x(7x+5) what is the answer
guapka [62]
The answer is 28x^2+20x.

Hope this helps.
8 0
3 years ago
Read 2 more answers
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