Answer:
16y -25
Step-by-step explanation:
7-4[3-(4y-5)] = 7 -4(3 -4y +5) = 7 -4(-4y +8)
= 7 + 16y -32
= 16y -25
Answer:
substitute x as 3
Step-by-step explanation:
f (3)=2x
=2×3
=6
Answer:
Q1
|a-b| = b-a when a<b
Q2
104159/33000
Step-by-step explanation:
Q1
If a<b then a-b will always be negative. To get the absolute value, we can take -(a-b) = -a+b = b-a.
Q2
Let x = 3.12789789789...
We isolate the repeating decimal to start after the decimal, so we multiply by 100.
100x = 312.789789789...
We want to multiply by 10 for each digit that repeats (in this case 3), to get the repeating part to the left of the decimal.
100000x = 312789.789789
Subtracting the two...
x(100000-100) = 312789.789789 - 312.789789
99900x = 312477
x = 312477/99000 = 104159/33000
Answer:
3. is 4x-16
5. is 4x+15
Step-by-step explanation: Eliminate redundant parentheses(−10)+(3−6)(x-10)+(3x-6)(x−10)+(3x−6)−10+3−6
Answer:
2000 mm^3* .0005oz/1mm^3=1oz
Step-by-step explanation:
v=40mm*25mm*2mm=2000mm^3