Answer:
x=0
Step-by-step explanation:
3x+-2=-2
Add 2 to each side
3x+-2+2=-2+2
3x = 0
Divide by 3
3x/3 = 0/3
x = 0
Answer:
37
Step-by-step explanation:
The answer must be (a multiple of 2, 3, 4 and 6) + 1, and (a multiple of 5) + 1, because 1 or 2 coins were left over when dividing by 2, 3, 4, 6 or 5.
Let's look at the lowest common multiples of 2, 3, 4, 6:
Prime factorisation:
2 = 2
3 = 3
4 = 2 * 2
6 = 2 * 3
therefore, the lowest common multiple is 2 * 2 * 3 = 12
Let's look at the answers that this would give us (ie multiples of 12):
12 + 1 = 13 <-- this would work, but 11 (ie two less than 13) is not a multiple of 5
12 * 2 + 1 = 25 <-- 23 is not a multiple of 5 either
12 * 3 + 1 = 37 <-- 35 (two less than 37) is a multiple of 5 :)
therefore 37 is our answer since it is one more than a multiple of 12 (ie 36) and two more than a multiple of 5 (ie 35)
Answer:
Step-by-step explanation:
To find the perimeter, you would have to add all the expressions together, so you would get 2x+x+x+y+y+1+y+y
combine like terms and you will get 4x+4y+1
die number : 1 2 3 4 5 6
<em>p</em><em>r</em><em>o</em><em>b</em><em>a</em><em>b</em><em>i</em><em>l</em><em>i</em><em>t</em><em>y</em><em> </em><em>o</em><em>f</em><em> </em><em>g</em><em>e</em><em>t</em><em>t</em><em>i</em><em>n</em><em>g</em><em> </em><em>e</em><em>v</em><em>e</em><em>n</em><em> </em><em>n</em><em>u</em><em>m</em><em>b</em><em>e</em><em>r</em><em> </em><em>:</em><em> </em><em>3</em><em>/</em><em>6</em>
because the number 2,4,6 are even number
the number 3 is 'how many even number?'
while 6 is the total number in throwing a die
<em>p</em><em>r</em><em>o</em><em>b</em><em>a</em><em>b</em><em>i</em><em>l</em><em>i</em><em>t</em><em>y</em><em> </em><em>o</em><em>f</em><em> </em><em>g</em><em>e</em><em>t</em><em>t</em><em>i</em><em>n</em><em>g</em><em> </em><em>p</em><em>r</em><em>i</em><em>m</em><em>e</em><em> </em><em>n</em><em>u</em><em>m</em><em>b</em><em>e</em><em>r</em><em> </em><em> </em><em>:</em><em> </em><em>2</em><em>/</em><em>6</em>
because the number 3,5 are only prime number
the number 2 is 'how many prime number?'
while 6 is the total number in throwing a die
the question ask : getting even OR prime number
this means that we have to add the probability of even and prime number
3/6 + 2/6 = 5/6 (answer)
