When using elimination to solve 2x-3y = 4 7x+ 6y = -1 what would be a possible first step? A 4x – 6y = 8 7x + 6y = -l B x = 3/2y + 2 7x + 6y = -1 C 2x -3y = 4 x = -6/7y – 1/7 D y = 2/3x – 4/3 7x + 6y = -1
Answers
A because you have to multiply the problems to even in out (2x-3y=4) x2 (7x+6y=-1) x1
4x – 6y = 8 7x + 6y = -l
What is the unit rate: $1.12 for 8.2 ounces
Answers
If you need the Unit Rate for ounces, divide $1.12 by 8.2. Rounded it would be $0.14.
the tank is 600 cubic meters. the height of tank is 6 meters. the base of the tank is square what is the side of the side of the base?
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Volume (tank)=base x heitht base is a squeare, so base=side²
Volume(Tank)=side² * height 600 m³=side² * 6 m side²=600 m³/ 6 m side²=100 m² side=√(100 m²)=10 m.
answer: the side of the base is 10 m.
Can someone answer this for me pls and thank you
Answers
x in terms of b:
-2(bx - 5) = 16
-2bx + 10 = 16
-2bx = 6
x = 6 / -2b
x = -3/b
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when b = 3 then
-2(3x - 5) = 16
-6x + 10 = 16
-6x = 6
x = -1
Answer
The value of x in terms of b is -3/b
The value of x when b is 3 is -1
calculate the volume of a cylinder whose height is (2x-5) inches and whose base has a radius of (x-5) inches round your answer to the nearest tenth of a cubic inch
Answers
v=(1/3)hpir^2 aprox pi to 3.14 fo this problem v=(1/3)(2x-5)(3.14)(x-5)^2 v=(1/3)(2x-5)(3.14)(x^2-10x+25) v=(1/3)(3.14)(2x^3-25x^2+100x-125) v=(1/3)() v= and since we don't know what x,height, or radius or diameter or surface area or anything about the cylinder, we can't solve
Please can someone help me with both questions. Thank you. Work is due tomorrow.
Answers
So let's begin! So the length is 25 and the entire perimeter is 106. Lets put these both of these numbers as information we know.
We know the length is 25. We know the full perimeter is 106. We also know a rectangle has 2 pairs of congruent sides.
Okay so, the length is 25. Since there are two sides that are the same we would multiply 25 by 2 to get 50.
Now we know 2 sides out of the four sides on a rectangle.
106 is the final perimeter, if we subtract 50 from 106, we get 56. That is the measurement for both sides we're missing but we need to know the width for just one side. So we divide 56 by 2 to get 28. The width is 28.