Answer:
Step-by-step explanation:
Combine the opposite terms in r − 3 − r
.
3 times a number would be 3N
than increased by 2 means add 2
so the equation would be 3N+2 =
A.
s=number of strawberry wafers
c=number of chocolate wafers
3s+1c=30
s+c=22
B.
multiply 2nd equation by -1 to do elimination
add to the first equation
3s+1c=30
<u>-s-c=-22 +</u>
2s+0c=8
2s=8
divide by 2
s=4
sub back
s+c=22
4+c=22
c=18
I used elimiation because it seemed right for this one
I can also do subsitution
3s+1c=30
s+c=22
minus s both sides in 2nd equation
c=22-s
sub for c in other equation
3s+22-s=30
2s+22=30
minus 22 both sides
2s=8
divide by 2
s=4
and now
c=22-s
c=22-4
c=18
substiotion because it's easier for some people to see
18 chocolate
4 strawberry
It’s 12 because 300 / 25 Equals to 12 so 12x25 equals to 300!
If e repersents the something of logarithms then
I memorised e to 16 digits:2.718281828459045...
so that number^2-x^2=0.23
number squred=aprox 7.38906
7.38906-x^2=0.23
subtract 7.38906 forom both sides
-x^2=-7.15906
multiply negative
x^2=7.15906
squre root
2.67564=x
