Answer:
First add 4 to each side
Step-by-step explanation:
7x−4≤19
First add 4 to each side
7x−4+4≤19+4
7x≤23
Then divide by 7
7x/7≤23/7
x≤23/7
Answer:
c,d,e
Step-by-step explanation:
Answer:
$848
Step-by-step explanation:
Calculation for the cost of this familiy's clothing in 1991
First step is to calculate the amount that is increase per year
Increase per year= ($1000-$620)/(1995-1985)
Increase per year= 380/10
Increase per year= $38
Now let y be :38*x + $620 and let x be 6 years (1991-1985)
Second step is to calculate the cost of the clothing in 1991
y = 38*6 + 620
y=228+620
y = $848
Therefore the cost of this familiy's clothing in 1991 will be $848
Answer:
Oil supply will run out in 44.283 years.
Step-by-step explanation:
There are 1.338 trillion barrels of oil in proven reserves.
If oil consumption is 82.78 million barrels per day then we have to calculate the number of years in which supply of oil runs out.
In this sum we will convert 1.338 million barrels of oil into million barrels first then apply unitary method to calculate the time in which oil supply runs out.
Since 1 trillion =
million
Therefore, 1.338 trillion = 1.338×
million
∵ 82.78 million barrels oil is the consumption of = 1 day
∴ 1 million barrels oil is the consumption of =
day
∴ 1.338×
barrels will be consumed in =
days
= 16163.3245 days
≈
years
≈ 44.283 years
Therefore, oil supply will run out in 44.283 years
Answer:
35.6 miles per gallon.
I'm not sure but good luck :)
Step-by-step explanation: