Answer:
Step-by-step explanation:
Parallel lines have the same slope. The slope of the given line is 3. The easy way to do this, the one that uses our logical brains as opposed to our mathematical brain, tells us that since there is only one choice that has a given slope of 3, that is the one that we want. The second choice down is the only one that has a slope of 3.
Mathematically,
and
and
so
y = 3x - 7 (the second choice)
Answer:
25.
Step-by-step explanation:
Let the number of pupils be x, then:
there are 0.6x girls and 0.4x boys.
From the given information:
0.6x - 0.4x = 5
0.2x = 5
x = 5/0.2
= 50/2
= 25.
X represents John's age
Ben = x+5
John = x
x+2(x+5)=46
use the distributive property for 2(x+5)
x+2x+10=46
combine like terms
3x+10=46
subtract 10 from each side
3x=36
divide both sides by 3
x=12
John is 12 years old.
Answer:
...number its multiplied by itself
Step-by-step explanation:
ex. 2^3 = 2x2x2 = 8