Answer:
x=−0.35
Step-by-step explanation:
2.5x−10.5=64×0.5x
2.5x−10.5=32x
−10.5=32x−2.5x
−10.5=29.5x
− 29.5/10.5=x
−0.355932=x
Nine tenths as percentage = 9/10 * 100
= 9 * 10 ( 100 divided by 10 is 10 )
= 90 %
Therefore, nine tenths as a percentage is 90 % .
Answer:
The ages of the children are 6, 9 and 12.
Explanation:
Let x= the age of the youngest child.
If the oldest child is twice the age of the youngest, the age of the oldest child is twice x or 2x.
If the middle child is 3 years older than the youngest, the age of the middle child is x+3.
If the sum of their ages is 27, then
x+2x+x+3=27aaa(Combine like terms)
4x+3=27aaa
aa−3a−3aaa(Subtract 3 from both sides)
4x=24
4x4=24aaa(Divide both sides by 4)
Answer:
The value of the expression is -116
Step-by-step explanation:
Given
Required
Solve when b = -4 and c = 1
Substitute -4 for b and 1 for c
<em>The value of the expression is -116</em>
x*4-16x*4-16
4x-64x-16
-60x-16
