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MariettaO [177]
3 years ago
8

Robert run the 100 meter dash in 13.5. later he run same distance in 10.3 seconds. how many seconds less did it take him to run

the same distance the second time?
Mathematics
1 answer:
leonid [27]3 years ago
3 0

Answer:

3.2seconds

Step-by-step explanation:

Step one:

Robert run the 100 meter dash in 13.5 seconds

We are told that he later  run same distance in 10.3 seconds

Required.

The time difference in the first dash and the second

Step two:

The first dash took 13.5 seconds

the second took 10.3 seconds

the difference = 13.5-10.3= 3.2seconds

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mamaluj [8]
X + y + z = 2
x - y + 5z = 6

cancelando +y com -y:

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x + 5z = 6

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-4x = -4 *(-1)
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z = 2 - 1
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x + y + z = 2
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8 0
3 years ago
In the accompanying diagram of ABC ca is extended to D, m∠ABC = 70 and m∠BCA =50 Find m∠DAB
zvonat [6]

Answer:

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Step-by-step explanation:

Find the diagram attached.

From the diagram;

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The sum of interior angle of the triangle is equal to exterior

m∠BCA +m∠ABC =m∠DAB

Given

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m∠DAB = 120 degrees

<em>Hence the measure of m∠DAB is 120 degrees</em>

6 0
3 years ago
hich of the following expressions is equivalent to |x + 4| &lt; 5? A. –5 &gt; x + 4 &lt; 5 B. –5 &lt; x + 4 &lt; 5 C. x + 4 &lt;
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Answer:

option B

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A. –5 > x + 4 < 5

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5 is positive, so we translate the given absolute inequality to

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