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harkovskaia [24]
3 years ago
14

The measures of the angles of △RST are given by the expressions in the table.

Mathematics
2 answers:
Andreyy893 years ago
3 0
X=34
angle s=38
angle t= 111
DedPeter [7]3 years ago
3 0
Here, we know sum of all the angles in a triangle is equal to 180
31 + x+4 + 3x+9 = 180
4x + 44 = 180
4x = 180 - 44
x = 136 / 4
x = 34

Angle S = x+4 = 34+4 = 38
Angle T = 3x+9 = 3(34)+9 = 111

Hope this helps!
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find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer be
olasank [31]
Hello,

u_{1} =4\\
 u_{2} =4*q\\
 u_{3} =4*q^2\\
...\\

 u_{9} =4*q^8\\\\
==\textgreater\ 4*q^8=1024\\
==\textgreater\ q^8=256\\
==\textgreater\ q=2\mbox{( and there is a problem in the question) } \ or \ q=-2\\
if\ q=2 \ then\  \sum_{i=0}^{8}\ 4*(2)^i= 4*\dfrac{1-2^9}{1-2} =2044\\

if \ q=-2 \ then\ \sum_{i=0}^{8}\ 4*(-2)^i= 4*\dfrac{1-(-2)^9}{1+2} =684\\





Answer B (but see the problem)
7 0
3 years ago
Read 2 more answers
5. 3x + 5y + 5z =1<br> x - 2y = 5<br> 2x + 4y = 11
lilavasa [31]

Answer:

see explanation

Step-by-step explanation:

Given the 3 equations

3x + 5y + 5z = 1 → (1)

x - 2y = 5 → (2)

2x + 4y = 11 → (3)

Use (2) and (3) to solve for x and y

Multiply (2) by 2

2x - 4y = 10 → (4)

Add (3) and (4) term by term

4x = 21 ( divide both sides by 4 )

x = \frac{21}{4\\}

Substitute this value of x into (3)

2 × \frac{21}{4\\} + 4y = 11

\frac{21}{2\\} + 4y = 11 ( subtract \frac{21}{2\\} from both sides )

4y = \frac{1}{2} ( divide both sides by 4 )

y = \frac{1}{8\\}

Substitute the values of x and y into (1) and solve for z

3 × \frac{21}{4\\} + 5 × \frac{1}{8\\} + 5z = 1

\frac{63}{4} + \frac{5}{8} + 5z = 1

\frac{131}{8} + 5z = 1 ( subtract \frac{131}{8} from both sides )

5z = - \frac{123}{8} ( divide both sides by 5 )

z = - \frac{123}{40}

Solution is

x = \frac{21}{4\\}, y = \frac{1}{8\\}, z = - \frac{123}{40}

3 0
2 years ago
Best estimate of 20% 516
tensa zangetsu [6.8K]
Since it's an estimate, probably 103<span />
8 0
3 years ago
Read 2 more answers
How to I get 25ft to centimeters?
Lady bird [3.3K]

Answer:

762 centimeters

Step-by-step explanation:

One feet equals to 30.48

6 0
2 years ago
Thank you guys so much!!
Scilla [17]

Answer:

i think it's 6.5°C

hope this helps

8 0
2 years ago
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