Solve for n the first can be like:-NP<40+70. -NP<110 the second one can be like : 4w-7k =28. solve for k and then, -7k=28-4w divide both sides by -7 that equal to k =-4-4w
4× 4 3/10= 4×43/10= 86/5= 17 1/5
Answer:
<em>To travel 20 Km, the hybrid car needs 0.3125 gallons of fuel.</em>
Step-by-step explanation:
<u>Proportions</u>
The hybrid car can travel 40 miles per gallon.
Since one mile is equivalent to 1.6 Km, the distance traveled per gallon is 40*1.6 = 64 Km.
Now the distance is expressed in Km, we can find the gallons needed to travel 20 Km, by calculating 20/64 = 0.3125.
To travel 20 Km, the hybrid car needs 0.3125 gallons of fuel.
1.
the closest perfect squares of 12 are 9 and 16,
that is 9<12<16
so


this means,

is 3 point something...
2.
similarly
36<40<49
so


which means

is 6 point something...
3.
<span>the sum of the integers between the square root of 12 and 40 is the sum of 4, 5 and 6, since 4 is the smallest integer after root 12, and 6 the greatest integer to before root of 40.
Answer: 15</span>
Answer: 54.33%
<u>Explanation:</u>
14 carat gold contains 58.33% gold and 4% silver (since we are using the lowest percentage).
58.33% - 4% = 54.33%
There is 54.33% more gold than silver in the 14 carat gold mixture.