Answer:
25 km
Step-by-step explanation:
1 km in 4m
so
100/4 = 25
25km
Answer:
x=5
Step-by-step explanation:
-5x+6(5x-18)=17
-5x+30x-108=17
25x-108=17
25x=17+108
25x=125
x=5
So,
Simply divide 12 by 18.
The experimental probability of tossing heads was 2 out of 3.
Answer:
Step-by-step explanation:
The number of children who contribute toward the present is represented as
The cost of the present is 120 and the children split the cost evenly between them. The expression for this is
Liam has to give towards the present
Liam has 250 with him
If he gives away, then the money he has left is:
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PART A
s = <span>the number of packets of strawberry wafers ;
c = </span><span>the number of packets of chocolate wafers ;
3 </span>× s + 1 × <span>c = 30 ;
s + c = 22 ;
PART B
</span>The method of solving "by substitution"<span> works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.
</span>
c = 30 - 3s;
s + ( 30 - 3s ) = 22;
30 - 2s = 22;
30 - 22 = 2s;
8 = 2s;
s = 4 ;
c = 30 - 12 ;
c = 18 ;
