Answer: 90 is a number which has 9 as the sum of its digits, 9+0=9 and if the digits are reversed, 09 is 81 less than 90.
Step-by-step explanation: Since the number must be a 2-digit number, it seems that 90 is the only number that qualifies.
If you need some equations, here is a way to set up a system to solve:
x+y= 9 rewrite to get a value for y to substitute:
y = 9-x
10x +y = 10y + x + 81 rewrite by moving (subtracting variable terms from both sides)
10x -x + y-10y = 81 combine like terms
9x - 9y = 81
Substitute for y and solve for x
9x - 9(9-x)= 81 distribute.
9x - 81 + 9x = 81
18x = 162. 162/18 = 9
x = 9
Substitute in the original equation to solve for y
9 + y = 9
y = 0
10(9) + 0 = 10(0) + 9 +81
90 - 81 = 09
The new statement will be:
- The nuclear power plants wastes are very toxic.
- Air pollution from Nuclear power plants is much lower that from power
- plants that make use of fossil fuels.
- Power plants that are Nuclear are regarded as safe.
- The risks of nuclear power is much more lower than the benefits.
<h3>What changed my mind in the above?</h3>
Nuclear energy is known to be one that produce a lot of radioactive waste and this tends to pose a threat to human health and the environment.
Hence, The new statement will be:
- The nuclear power plants wastes are very toxic.
- Air pollution from Nuclear power plants is much lower that from power
- plants that make use of fossil fuels.
- Power plants that are Nuclear are regarded as safe.
- The risks of nuclear power is much more lower than the benefits.
Learn more about nuclear power from
brainly.com/question/2005734
#SPJ1
Hence verified!. Hope it's understandable and nvm that background lol.
Question:
What is the value of 
when x=3 and y=0
Answer:
The answer is zero
Step-by-step explanation:
Given:
x = 3
y = 0
Solution:
Let us first substitute the given values inb the expression
then we get
We also know that anything raised to the power of zero also give zero
then
=> 0
84 days will pay before they both do their chores again on the same day.
<span>
<span>
</span><span><span>
Ross mows the lawn
<span> Annie bathes the dog </span>
</span>
<span>
12 x
1 =
12 21 x 1 = 21
</span>
<span>
12 x 2 = 24 21 x 2 = 42
</span>
<span>
12 x 3 = 36 21 x 3 = 63
</span>
<span>
12 x 4 = 48 21 x 4 = 84
</span>
<span>
12 x 5 = 60
21 x 5 = 105
</span>
<span>
12 x 6 = 72 21 x 6 = 126
</span>
<span>
12 x 7 =
84 21 x 7 = 147
</span>
<span>
12 x 8 = 96 21 x 8 = 168
</span>
<span>
12 x 9 = 108 21 x 9 = 189
</span>
<span>
12 x 10 = 120 21 x 10 = 210
</span></span></span>
