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ioda
3 years ago
7

What is the value of x. Please show work

Mathematics
1 answer:
HACTEHA [7]3 years ago
7 0
It's x=7/99 or x=0.071
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5= 3 1 (x+7) ) x = <br> What is it?
aleksandrvk [35]

Answer:

Step-by-step explanation:

5= 31(x +7)

5= 31x + 217

5 - 217 = 31x + 217 - 217

212 = 31x

212/31 = 31x/31

212 = x

x= 212

5 0
3 years ago
Solve the equation. Check for extraneous solutions<br><br> please help!!!
lozanna [386]
!z!=a→z=a or z=-a; z=4x+3, a=9+2x

!4x+3!=9+2x
1) 4x+3=9+2x
Solving for x:
4x+3-3-2x=9+2x-3-2x
2x=6
2x/2=6/2
x=3

Checking for extraneous solution:
!4x+3!=9+2x
x=3→!4(3)+3!=9+2(3)
!12+3!=9+6
!15!=15
15=15 Ok, then x=3 is not a extraneous solution 

2) 4x+3=-(9+2x)
Solving for x:
4x+3=-9-2x
4x+3-3+2x=-9-2x-3+2x
6x=-12
6x/6=-12/6
x=-2

Checking for extraneous solution:
!4x+3!=9+2x
x=-2→!4(-2)+3!=9+2(-2)
!-8+3!=9-4
!-5!=5
5=5 Ok, then x=-2 is not a extraneous solution

Answer:
x = -2 or 3 
4 0
3 years ago
Please help me.!
IRINA_888 [86]
You set up a proportion. You would do 1 is to 48 as x is to 300 then u cross multiply and get 48x=300and then do 300/48 and thats 6.25 minutes
5 0
3 years ago
Rewrite 22/9 as a mixed number
saveliy_v [14]

Answer:

the mixed fraction is 2 4/9

4 0
3 years ago
Read 2 more answers
7. What is the approximate distance between points (-2,-1) (-5,-4)
aleksley [76]

Answer:

Step-by-step explanation:

D=√((-5+2)²+(-4+1)²)=√(9+9)=3√2≈4.24

8 0
3 years ago
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