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Ulleksa [173]
3 years ago
9

Please help me find the value of x and show and explain work

Mathematics
2 answers:
riadik2000 [5.3K]3 years ago
5 0
2x + 3 = 9      Move all terms not containing x to the right side of the equation.

2x = 6             Divide each term by 2 and simplify.

x=3
polet [3.4K]3 years ago
5 0
You make 2x+3 equal 19 so like this 2x+3=19 then you subtract 3 over to 19 and that is 2x=16 then you divide 16 by 2 and that is 8 so x=8
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A man is three times as old as his son in 10 years time their combined ages will be 68 how old is each person now person now​
Murljashka [212]

Answer:

The dad is 36 and the son is 12

6 0
2 years ago
The mean of 10 values is 19. If further 5 values are
Leokris [45]

Answer:

22

Step-by-step explanation:

Pretend the 10 values in the first sentence are a,b,c,d,e,f,g,h,i,j

Pretend the addition 5 values is k,l,m,n,o

So the mean of all the 15 data is (a+b+c+d+e+f+g+h+i+j+k+l+m+n+o)/15=20

So the sum of all 15 data is  a+b+c+d+e+f+g+h+i+j+k+l+m+n+o=300                since 15(20)=300

Now let's look at the first 10:  We have their mean so we can write:

(a+b+c+d+e+f+g+h+i+j)/10=19

so a+b+c+d+e+f+g+h+i+j=190                               since 10(19)=190

So that means using our first sum equation and our equation sum equation we have

190+k+l+m+n+o=300

      k+l+m+n+o=300-190

      k+l+m+n+o= 110

So the average of those 5 numbers mentioned in your problem is 110/5=22

3 0
3 years ago
What is a reflection image of P (0, 0) after two reflections, first across X= -3 and then cross Y= -3?
ohaa [14]

Answer:

(-6,-7)

Step-by-step explanation:

7 0
3 years ago
1 to the 10 power is what
Yuri [45]

Answer:

10 i think

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
I need help fast pls
mash [69]

Answer:

1.  no

2. no

3. no

4.yes

Step-by-step explanation:

1. if you solve this you will get -11/120 and you want 3/7

2. no because you will get 5/16 and you want 5/8

3. no because you will get 3/8 and you want 5/8

4. yes because you will get 5/8

6 0
2 years ago
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