Answer:
<h3>D. 12</h3>
Step-by-step explanation:
Which number could be the missing number?
Given the inequality expression, 1/10 > 1/ ?
We are to fine the missing number that will make the inequality true;
Cross multiply:
1 * x > 1*10
x > 10
Hence the value of x greater than 10 is the answer. From the options, the only value greater than 10 is 12. Hence 12 is the correct answer.
<h2>Step-by-step explanation :</h2>
Total shared part:
1/4 + 1/8
Taking LCM and adding:
2/8+1/8
Adding gives:
3/8
We are given the data here that there are 21 teams and that in the tournament, for each opponent, one team has to play with each other twice. The formula to follow here is T = n*(n-1)*z/2 where T is the total number of games played in total in the tournament, n is the number of teams who participated and z is the number of times they have to face in the eliminations. 2 is attributed to prevent the repetition of the count in the reverse of roles of the opponents. In this case, upon substitution, then T =21*20*2/2 = 420 games in total.
Answer:
2x+y=8
3x+y=-2
Elimination method
subtract equation (1) from (2)
1x/1=6/1
x=6
Substitute for y in equatw (1)
2 ×6+y=8
12+y=8
Collect like terms
y=8-12=-4
Answer:
<h3>Encik Arif's mass is 63kg</h3>
Step-by-step explanation:
Let Encik Arif's mass be x
the ratio of Encik Arif's mass to his son's mass is 3:2
That's
<h3>
</h3>
The son's mass is 42, so the ratio of Encik Arif's mass to his son's is
x : 42
That's
<h3>
</h3>
Now equate the two fractions
That's
<h3>
</h3>
Cross multiply
3(42) = 2x
126 = 2x
Divide both sides by 2
We have the final answer as
<h3>x = 63</h3>
Hope this helps you