<span>1. </span><span>So in every 1 hour, there’s 281
gallons go through in a certain valve.
Now, let’s find the total number of gallons that will go through in 91 hours.
Let’s assign a variable for the value of total number of gallons.
Let x be the value of number of gallons
x = number of gallons in 91 hours
=> 281 gallons/ hr
=> 281 x 91
=> 25 571 gallons / 91 hours
Thus, x = 25 571 gallons will go through the open valve in 91 hours,
</span>
Answer:
<h2><em><u>44</u></em><em><u>.</u></em><em><u>4</u></em></h2>
Step-by-step explanation:
<em><u>Let</u></em><em><u>,</u></em>
The number thought by Sushil = x
When halved = x/2
<em><u>We</u></em><em><u> </u></em><em><u>know</u></em><em><u> </u></em><em><u>that</u></em><em><u>, </u></em>
When the number is halved then it becomes 22.2
<em><u>Therefore</u></em><em><u>, </u></em>
The original number is,
![= > \frac{x}{2} = 22.2](https://tex.z-dn.net/?f=%20%3D%20%20%3E%20%20%5Cfrac%7Bx%7D%7B2%7D%20%20%3D%2022.2)
=> x = 22.2 × 2
=> x =<em><u> 44.4 (Ans)</u></em>
Answer:
16
Step-by-step explanation:
![(a+5)-\frac{b}{b-4}+\frac{2(b+3)}{a}\\\\a=2\\\\b=3\\\\(2+5)-\frac{3}{3-4}+\frac{2(3+3)}{2}\\\\=7-\frac{3}{-1}+3+3\\\\=7+3+6\\\\=16](https://tex.z-dn.net/?f=%28a%2B5%29-%5Cfrac%7Bb%7D%7Bb-4%7D%2B%5Cfrac%7B2%28b%2B3%29%7D%7Ba%7D%5C%5C%5C%5Ca%3D2%5C%5C%5C%5Cb%3D3%5C%5C%5C%5C%282%2B5%29-%5Cfrac%7B3%7D%7B3-4%7D%2B%5Cfrac%7B2%283%2B3%29%7D%7B2%7D%5C%5C%5C%5C%3D7-%5Cfrac%7B3%7D%7B-1%7D%2B3%2B3%5C%5C%5C%5C%3D7%2B3%2B6%5C%5C%5C%5C%3D16)
Let no. of pens be x.
Pens : x
Pencils: x+8
Total: 2x+8
Student takes 1 pen and 5 pencils.
Remainder: 2x+8 - 5 -1 = 2x+2
2x+2 = 26
2x= 24
x = 12 (original no. of pens)
x+ 8 = 20 (original no of pencils)
There are 12 pens at first and 20 pencils.
After 1 pen is taken, 11 pens are left.
After 5 pencils are taken, 20-5=15 pencils are left.
Answer:
D
Step-by-step explanation:
(-7x^2 - 3) + (4x - 6)
-3 - 6 = -9
-7x^2 + 4x - 9