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malfutka [58]
3 years ago
14

Translate in to Algebraic equation. I had some money and I gave away $20 the first day, gained 3 times my original amount on the

second day, and noticed that I now have $80.
Mathematics
1 answer:
prohojiy [21]3 years ago
5 0
Let x represent the amount of money you originally had. The algebraic expression would be: x-20+3×=80.
If you want to solve the equation, it would be: 4x=100, and x=100÷4, which equals 25. So your original money was $25.
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12.
IrinaVladis [17]

Answer:

Length of the room is   180 ft

Step-by-step explanation:

We have a rectangular room with dimensions:

width  =  70  ft       and  length    "x" (unknown)

Perimeter of a rectangle   is   2*w  +  2*x    and according to problem statement 500 ft of lights will fit exactly in room perimeter then:

2*70  +  2*x   =  500

140  + 2*x  =  500

2*x  =  500 - 140

2*x  = 360

x  = 360/2

x  =  180  ft

5 0
3 years ago
What if the value of x? show all work
alina1380 [7]
For this case we can make use of the Pythagorean theorem.
 We have then:
 (root (117)) ^ 2 = x ^ 2 + 6 ^ 2
 Clearing x we have:
 x ^ 2 = (root (117)) ^ 2 - 6 ^ 2
 Rewriting:
 x = root (117-36)
 x = root (81)
 x = 9
 Answer:
 
The value of x is given by:
 
x = 9 cm
4 0
3 years ago
Identify which table shows a direct variation.
DochEvi [55]
Only Table 2 shows direct variation.  Every y value is 7 times the associated x value.



8 0
3 years ago
WILL GIVE BRAINLIEST! Please help me quickly with math!
Inga [223]
4 units hope this helps

8 0
4 years ago
Read 2 more answers
HELP PLEASE <br>factor completely. <br><br>25d^8−80d^4+64=
Dominik [7]

Answer:

(5d⁴ − 8)²

Step-by-step explanation:

I hope this is helpful!

8 0
2 years ago
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