Step-by-step explanation:
x+y=5
3x-2y+5=0
3x-2y= -5
x+y=5...... equation 1
3x-2y= -5....... equation 2
there fore make x the subject of the formula in equation 1
x=5-y.. equation 3
substitute equation three in equation 2
3(5-y)-2y=-5
15y-3y-2y=-5
10y=-5
divide both sides by 10
y=-5/10
y=-½
substitute y into equation 1
x+(-½)=5
x=5+½
x=5½
x=5½,y= -½
TL;DR(too long didn't read): answer is 3/4
This question may look confusing, however, it is more easily understood once you see that the fractions appear to be changing more randomly than they are in a way you can recognize, however, they're not. Since they look like that it's because they're being multiplied by a fraction. Split the fractions into two to make it easier. 3/2 and 9/8, just look at them as '3' and '2' and '9' and '8'. 3 becomes 9. Which means either 6 was added or 3 was multiplied by 3. Compare to the next row, 27. 9-->27 can't be 6, so it's being multiplied by 3. Now for the bottom. 2 becomes 8, and knowing that the numerator of the fraction is being multiplied, so is the denominator then, so 2-->8 is 2 times 4. Put the numerator and denominator back together and you have 3/4. The answer is 3/4.
Answer:
500 pounds
Step-by-step explanation:
By proportion :-
15% of the tigers weight = 75 pounds
1% .................................... = 75/15 pounds
100% .................................. = 75*100 / 15 pounds
= 7500 / 15
= 500 pounds
Answer:
<h2>The surface area is :</h2><h2>178 mm^2</h2>
Step-by-step explanation:
I hope that is useful for you
V = `1/3 * πr² * h
The half of a diameter is the radius. So, r = d/2. Substituting the values
V = 1/3 * (3.14)(5/2)² * 7
V = 45.79 or 46 cm³
The answer is letter B.
