Answer:
4 and 5
Step-by-step explanation:
Let the numbers be x and y
If their sum is 9, hence;
x + y = 9 ....1
When reversed
10y+x = 2(10x+y)
10y+x = 20x + 2y
10y - 2y = 20x - x
8y = 19x
y = 10x/8 ...2
Substitute equation 2 into 1;
From 1;
x+y = 9
x +(10x/8) = 9
18x/8 = 9
18x = 72
x = 72/18
x = 4
Since x+y =9
y = 9-x
y =9-4
y = 5
Hence the numbers are 4 and 5
Solution to equation
for all real values of x is
.
<u>Step-by-step explanation:</u>
Here we have ,
. Let's solve :
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⇒ 
⇒ 
⇒ 
⇒ 
By quadratic formula :
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⇒ 
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But at
we have equation undefined as
. Hence only solution is :
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Since , 
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Now , General Solution is given by :
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Therefore , Solution to equation
for all real values of x is
.
To find area u have to multiply the sides so it should be 7x7 or 13x7 it shouldnt be 13x7x7
Answer:420$
Solution: 105•4= 420$
25%= 1/4 therefore we can find the original price by multiplying the decrease with 4
The Tenth number percentage