Answer:
1) B/ 0.4n = 12; n = 30
2) B/ 125 – x = 58
3) B/ $1.75
Step-by-step explanation:
1) 0.4n = 12
n = 12 ÷ 0.4
n = 30
2) 125 – x = 58
– x = 58 – 125
– x = – 67 ( – & – will get cancelled)
x = 67
a) 125 + x = 58
x = 58 – 125
x = – 67 (pages won't be in negative)
c) 125 ÷ 58 = x
2.15 = x (wrong)
d) 58 – x = 125
– x = 125 – 58
– x = 67
x = 67 ÷ –1
x = – 67 ( pages won't be in negative)
3) 12x = 21
x = 21 ÷ 12
x = 1.75
Https://www.khanacademy.org/math/arithmetic/fraction-arithmetic/arith-review-comparing-fractions/v/c...
<u>Part</u><u> </u><u>1</u>
Subtracting 5 from both sides yields

<u>Part</u><u> </u><u>2</u>
When the output, f(x) is 2, we can substitute that in to obtain

0.09 is nine hundredths.
0.009 is nine thousandths.
You are correct.
Answer:
one angle is 150 degrees and the other is 30 degrees.
Step-by-step explanation:
please kindly check the attached file for explanation.