Answer: The number is 7
Step-by-step explanation:
Let x be the [number]
<u />
<u>Rephrase the expression</u>
2 times a number is increased by 4, it is the same as 25 decreased by the number
2x+4=25-x
<u>Calculate</u>
Given
2x+4=25-x
Add x on both sides
2x+4+x=25-x+x
3x+4=25
Subtract 4 on both sides
3x+4-4=25-4
3x=21
Divide 3 on both sides
3x/3=21/3
x=7
Hope this helps!! :)
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Speed = distance/time
distance = speed * time
let x = time covered by running
15 = run distance + walk distance
15 = 9(x) + 3(3-x)
15 = 9x + 9 - 3x
15 - 9 = 6x
6 = 6x
x = 1 hour
Therefore:
Running distance = speed * time
RD = 9km/hr * 1 hr
RD = 9km
Answer: The fourth one
Step-by-step explanation:
Answer:
C) m∠H = 85°
Step-by-step explanation:
<em>KL is the mid-segment of the triangle</em>, and is correlated with line GH, therefore, they are parallel. This means that <em>m∠K = m∠G and m∠L = m∠H</em>, because they are corresponding and on parallel lines.
By substitution, m∠H = 85°
