Since 1 kilogram equals 1,000 grams 5 potatoes equals 1,000 grams. 1,000 divided by 5 is 200. This means 1 potato has a mass of 200 grams 1,200 divided by 8 is 150. that means a pear has a mass of 150 grams. Since 200 grams is bigger then 150 grams, that means the potato has greater mass>
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8x + 7y = 19
- 8x
7y = 19 - 8x
÷ 7
y = 2 5/7 - 8/7x
So if that line is perpendicular to the line you're looking for, then the gradient (x value/slope) is the negative reciprocal to the gradient you're looking for, which would then be 7/8. You are told it has a y intercept of -7, so your final answer is:
y = -7/8x - 7
Hope this helps!
Answer:
X> -6
Step-by-step explanation:
hope this helps
Answer:
14 weeks till he has $480
Step-by-step explanation:
He needs $480
He has $60
He has to earn the rest over the span of the next few weeks, which is $30 for an unknown number of weeks.
Let the unknown number be x in our equation
What he needs to buy the TV and Stereo system is $480 which is our total
The $60 dollars he received is a complete variable
hence we can say,<em> 30x+60=480</em>
<u>This is our equation</u> but it isn't simplified.
first, divide everything by 10(it is a common divisor)
<em>3x+6=48</em>
<em>subtract</em> 6 which is complete from the total
3x=42
Make x the subject and divide both sides by 3
x=14
so the unknown number of weeks is 14.
