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blsea [12.9K]
3 years ago
11

In the first pic ABC=DBE find value of x, ABC=DEF find F in the second one

Mathematics
2 answers:
Ivenika [448]3 years ago
5 0

if ABC = DBE

then <a = <d and <c = <e

<c = <e

<c = 83


<a +<b + <c = 180  triangles add to 180

x+8 + 51+ 83 = 180

combine like terms

x+142 = 180

subtract 142 from each side

x = 38


ABC = DEF

then  <a = <d  <b = <e   and <c = <f

125 = <e

<d+<e+ <f = 180  triangles add to 180

35+125+ <f = 180

combine like terms

160 +<f = 180

subtract 160 from each side

<f = 120

FinnZ [79.3K]3 years ago
3 0

First problem:

x + 8 + 51 + 83 = 180

x + 142 = 180

x = 38

Second problem:

m<C + 35 + 125 = 180

m<C + 160 = 180

m<C = 20

m<F = m<C = 20

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The type of activity that Jeff does at a speed of 4.5 miles per hour is Swimming

<h3>Further explanation</h3>

Acceleration is rate of change of velocity.

\large {\boxed {a = \frac{v - u}{t} } }

\large {\boxed {d = \frac{v + u}{2}~t } }

<em>a = acceleration ( m/s² )</em>

<em>v = final velocity ( m/s )</em>

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Let us now tackle the problem !

<em>This problem is about Kinematics.</em>

We will solve it in the following way

\texttt{Speed of Biking} = \texttt{Distance of Biking} \div \texttt{Time Taken}

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\texttt{Speed of Biking} = 9.5 \texttt{ miles per hour}

\texttt{ }

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\texttt{Speed of Walking} = 3.5 \texttt{ miles per hour}

\texttt{ }

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\texttt{ }

\texttt{Speed of Swimming} = \texttt{Distance of Swimming} \div \texttt{Time Taken}

\texttt{Speed of Swimming} = \texttt{18} \div \texttt{4}

\texttt{Speed of Swimming} = \boxed{4.5 \texttt{ miles per hour}}

\texttt{ }

<h3>Learn more</h3>
  • Velocity of Runner : brainly.com/question/3813437
  • Kinetic Energy : brainly.com/question/692781
  • Acceleration : brainly.com/question/2283922
  • The Speed of Car : brainly.com/question/568302

<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle , Speed , Time , Rate

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Answer:

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Hi there!

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