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Gekata [30.6K]
3 years ago
15

a number consists of two digits. one of the digits is greater than the other by 5 when the digits are reversed the number become

s 3 divided by 8 of the original number. find the number​
Mathematics
1 answer:
lana [24]3 years ago
5 0

Answer:

The number is 72.

Step-by-step explanation:

Let the digits be x and x - 5 where x  is the first digit.

(As the number reversed = 3/8 of the original number the first digit must be the largest),

Consider the reverse digit number:

The original number = 10x + (x - 5) so the reverse number is 10(x - 5) + x and

10(x - 5) + x  = 3/8(10x + (x - 5))

11x - 50 = 3/8(11x - 5)      

11x - 50 = 33/8 x - 15/8              Multiply through by 8:

88x - 400 = 33x - 15

55x = 385

x = 7

and x-5 = 2.

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Solve for x: |x| − 8 = −5
hjlf
X= 3  and x= -3 that should be the correct answer

3 0
2 years ago
Solve this system of equations using the substitution method<br>y=x+7<br>-2x-11=y​
ryzh [129]

Answer:

x=-6, y=1

Step-by-step explanation:

Let's solve your system by substitution.

y=x+7;−2x−11=y

Step: Solve y=x+7 for y:

y=x+7

Step: Substitute x+7 for y in −2x−11=y:

−2x−11=y

−2x−11=x+7

−2x−11+−x=x+7+−x(Add -x to both sides)

−3x−11=7

−3x−11+11=7+11(Add 11 to both sides)

−3x=18

−3x/ −3 = 18/ −3  (Divide both sides by -3)

x=−6

Step: Substitute−6 for x in y=x+7:

y=x+7

y=−6+7

y=1  (Simplify both sides of the equation)

Answer:

x=−6 and y=1

 

3 0
3 years ago
I need help plz help me!!!!
AlexFokin [52]

Answer:

5/8 =)

Step-by-step explanation:

7 0
3 years ago
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Answer:

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Step-by-step explanation:

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8 0
2 years ago
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Answer:

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Step-by-step explanation:

8 0
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