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White raven [17]
4 years ago
6

Beth had planned to run an average of 6 miles per hour in a race. She had a very good race and actually ran at an average of 7 m

iles per hour, finishing ten minutes sooner than if she had averaged 6 miles per hour. How long was the race? 6 miles? 7 miles? 18 miles? 60 miles? 70 miles?​
Mathematics
1 answer:
serg [7]4 years ago
7 0

Answer:

(x/7) = actual time

Step-by-step explanation:

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Given the diagram below with line DE║ line AC. Find BC.
Karolina [17]

Answer:

13.5

Step-by-step explanation:

In triangle ABC, DE || AC

Therefore by basic proportionality theorem:

\frac{BD}{DA} = \frac {BE}{EC} \\\\\therefore  \frac{4}{8} = \frac {BE}{9} \\\\\therefore  \frac{1}{2} = \frac {BE}{9} \\\\\therefore  BE = \frac{9}{2} \\\\\therefore BE = 4.5\\\because BC = BE + EC \\\therefore BC = 4.5 + 9\\\huge \red {\boxed {\therefore BC = 13.5}} \\

8 0
3 years ago
What is going on<br>I am confused ​
nikdorinn [45]
?????? what do you mean
6 0
3 years ago
Read 2 more answers
(4.3 * 10-3)(2 x 10-2)​
FinnZ [79.3K]

<em>✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽</em>

<em>➷ </em>(4.3\cdot10-3)(2\cdot 10-2)<em />

<em>➷ </em>= (43 - 3)((2) (10) -2)<em />

<em>➷ </em>= 40 ((2) (10)-2)<em />

<em> ➷ </em>= 40(20 - 2)<em />

<em> ➷ </em>= (40)(18)<em />

<em> ➷ </em>= 720<em />

<em>✽</em>

<em>➶ Hope This Helps You!</em>

<em>➶ Good Luck (:</em>

<em>➶ Have A Great Day ^-^</em>

<em>↬ May ♡</em>

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3 0
4 years ago
Read 2 more answers
Given lines l, m and n are all parallel and cut by two transversal lines, find the value<br> of x.
statuscvo [17]

Step-by-step explanation:

u should attach the picture of the question because its difficult to identify where x is located

kindly attach the picture

5 0
3 years ago
Two points in the xy plane have cartesian coordinates (1.50, −3.00) m and (−7.50, 7.50) m. (a) determine the distance between th
vova2212 [387]
Distance  = sqrt [ (7.5 - -3.0)^2 + (-7.5 - .5)^2) ]

                = sqrt 17,226.56  =  131.25 (answer)
3 0
3 years ago
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