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Math, 28.10.2019 14:45 elaineeee

The sum of the digits of a two-digit number is 14. twice the tens digit increased by two equals four times the units digit. find the number

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Answers: 1

Answers

ansver

answer:

the number is 95

step-by-step explanation:

let

x = tens digity = units digit

expressions

"the sum of the digits of a two-digit number is 14"x+y=14twice the tens digit increased by two equals four times the units digit2x+2=4y

solve

derive the 1st equationy=14-xsubstitute the value of y .

2x+2=4(14-x)

distributive property

2x+2=56-4x

2x+4x=56-2

6x = 54

divide by 6

x = 9 tens digit

y=14-x = 14-9 = 5

ansver
Answer from: kuanjunjunkuan

Step-by-step explanation:

1. let 1 st no. be 8x

2nd no. be 3x

8x + 3x = 143  \\  11x = 143 \\ x =  \frac{143}{11}  \\ x = 13

the no. is 13

1st no. is 8x = 8×13=104

2nd no. is 3x= 3×13=39

Hope it helps

ansver
Answer from: Quest

d=8 in > r=4 in

h=5 in

vcone=1/3 π r^{2} h

vcone=1/3 π (4)^{2} (5)

vcone=80π /3 in^{3}

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Answer from: Quest

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