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3 years ago

In isosceles triangle RST below, what is the value of y?

Mathematics

2 answers:

son4ous [18]3 years ago

7 0

Answer:

y =71

Step-by-step explanation:

The sum of the angles of a triangle add to 180

y+y+38 = 180

Combine like terms

2y +38 =180

Subtract 38 from each side

2y+38-38 =180-38

2y = 142

Divide each side by 2

2y/2 =142/2

y = 71

nadezda [96]3 years ago

6 0

Answer:

71°

Step-by-step explanation:

total angle in a triangle is 180

y + y + 38 = 180

2y = 142

y = 71°

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Answer:

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Step-by-step explanation:

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2 years ago

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Strike441 [17]

Answer:

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Step-by-step explanation:

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3 years ago

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Tom [10]

Answer:

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Step-by-step explanation:

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3 years ago

Help and explain explain !!!!!!!!!!

tigry1 [53]

Answer:

$x=-1\text{ or }x=11$

Step-by-step explanation:

For $a=|b|$ , we have two cases:

$\begin{cases}a=b,\\a=-b\end{cases}$

Therefore, for $18=|15-3x|$ , we have the following cases:

$\begin{cases}18=15-3x,\\18=-(15-3x)\end{cases}$

Solving, we have:

$\begin{cases}18=15-3x, -3x=3, x=\boxed{-1},\\18=-(15-3x), 18=-15+3x, 33=3x, x=\boxed{11}\end{cases}$ .

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$\implies \boxed{x=-1\text{ or }x=11}$

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3 years ago

Evaluate. 43 – 4:25 ο ο ο ο

meriva

This is an improper. Perhaps you can fix it, so that I can assist you with it? I apologise.

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3 years ago