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Bess [88]
3 years ago
11

Find two numbers such that the sum of the first and three times the second is 5 and the sum of the second and two times the firs

t is 8.
Mathematics
1 answer:
Sav [38]3 years ago
4 0

Answer:

first number= 19/5

second number= 2/5

Step-by-step explanation:

first number= a

second number= b

a+3b=5   equation 1

b+2a=8  equation 2

using equation 2 we have

b=8-2a

using equation 1 we have

a+3(8-2a)=5  

a+24-6a=5

24-5=6a-a

19=5a

a=19/5 = first number

so using b=8-2a

we have

b=8-2(19/5)

b=8-(38/5)

b=2/5 = second number

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12 – 2x= -2(y – x)<br> -2x = -2(y – x) – 12<br> x= (y - x) + 6
Vilka [71]

Answer:

x=o and y= -6

Step-by-step explanation:

12-2x = - 2(y-x)

or,12-2x = -2y + 2x

or, 12 = - 2y + 4x

or, 12/2= 2x - y

or, 2x - y = 6

• 2x -6= y.....eqn_1

-2x=-2y+2x -12

or,4x +2y= -12

or,4x + 2(2x-6)= -12

or, 4x+4x-12=-12

or, 8x= 0

• x= o

putting the value of x in eqn...3

o=(y-0)+6

or, o= y + 6

•y = -6

5 0
2 years ago
Please help with my geometry homework!​
rusak2 [61]

Answer:

from that passage AB+BD=AD ; -4x+50+2x+4=2x+46 so -2x+54=2x+46 ; x=2.

AC=AB+BC ; AB=-4x+50=-4(2)+50=42

the total lengths is AD=2x+46=50

Therefore AC is more than 42 and less than 50 ; you can answer b,c,g

8 0
3 years ago
A circular wading pool at a park has a radius of 21 feet. Find the circumference of the pool. Use 22/7 for .
lozanna [386]
A circular wading pool at a park has a radius of 21 feet. Find the circumference of the pool. Use 22/7 <span>for .

C=2πr=2·π·21

≈131.94689ft
</span>
131.95
8 0
3 years ago
Read 2 more answers
Why is your nose in the middle of your face
aleksandr82 [10.1K]
Well, considering this is a Math Joke, I believe, the answer is, "Because it is the scenter." Or (Center).

Hoped this helped! :)
6 0
3 years ago
Evaluate the expression using order of operations 8-3[{4+2}+6]=?
DENIUS [597]
<span>8- </span><span>3[{4+2}+6]
= 8 - </span><span>3[6+6]
= 8 - 3 (12)
= 8 - 36
= -28</span>
3 0
3 years ago
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