Answer:
x=-20
Step-by-step explanation:
1. Expand 3(x+8) : 3x+24
2.Expand -3(7-1/4x): -21*3/4x
3. 3x+24= -21*3/4x
4.<em>Subtract 24 from both sides</em>
3x+24-24= -21*3/4x-24
5.3x= 3/4x-45
6.<em>Subtract 3/4 from both sides</em>
3x-3/4= 3/4x-45-3/4
7.9/4x=-45
8<em>.Multiply both sides by 4</em>
9/4x*4=-45*4
9.9x=-180
10.<em>Divide both sides by 9</em>
9x/9=-180/9
11. x=-20
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To find this the first step we do is multiply the length by the height (20.2 x 14.3) to get 288.86. Now there are 2 sides just the same so together it would be 577.72. Next is width times height. 9.1 times 14.3 to get 130.13 then times that by 2 to get 260.26. So far we have this 577.72 + 260.26 + (length times width). 20.2 times 9.1 is 183.82 then times that by 2 to get 367.64. Now we add all of them to get 1205.62 cm^2. The surface area of the right rectangular prism is 1,205.62 cm^2. If this is wrong please let me know so I can research more on the subject. Thanks :)
Answer:
22.1 grams
Step-by-step explanation:
At the end of each minute, (1 -17.1%) = 82.9% of the element remains. At the end of 19 minutes, the quantity has been multiplied by that value 19 times, so the remaining amount is ...
(780 g)(0.829^19) ≈ 22.1 g
After 19 minutes 22.1 grams remain.
Answer:
v = -23/4 = -5 3/4
Step-by-step explanation:
4= - 3/(v+5)
Multiply each side by (v+5)
4 (v+5) = -3
Distribute
4v+20 = -3
Subtract 20 from each side
4v +20-20 = -3-20
4v = -23
Divide by 4
4v/4 = -23/4
v = -23/4
Answer:
1. 10
2. 3
3. 7
4. 2x
5. 6x
6. none(1)
7.x
8. 7xy
9. 1
10. 5x
Step-by-step explanation:
