120
−
10
100
=
120
1
−
10
100
=
120
1
+
−
10
100
=
120
1
+
−
1
10
=
1200
10
+
−
1
10
=
1200
+
−
1
10
=
1199
10
(Decimal: 119.9)
<span>Multiples
of 3 are {3, 6, 9, 12, 15, 18, 21, 24, 27, 30, …….} , these are all the
multiples of 3.
Now, we are looking a negative multiple of 3, which means, we need to a
negative value of 3 multiples.
=> -3 {-3, -6, -9, -12, -15, -18, -21, -24, -27, -30,…..} These are all the
negative multiple of 3 in set builder notation.
Notice, that the numbers are of divisible by 3. Any number that Is divisible by
3 is called multiple of 3.
</span>
(r + 10)(r - 4)
To double check:
r * r is r^2
10 * r = 10r; -4 * r = -4r
Combine to get 6r.
-4 * 10 = -40
Answer:
x = 3.5; perimeter = 59; area = 8
Step-by-step explanation:
isosceles means the two legs equal each other so use same expression later on
6x + 8 = 2x - 6
6x - 2x = -8 - 6
4x = -14
x = 3.5
plug x value in the first expression to find the two sides that are equivalent to each other
6(3.5) + 8
21 + 8
29
plug x value into the second expression (the base)
2(3.5) - 6
7 - 6
1
perimeter = side 1 + side 2 + side 3
perimeter = 29 + 29 + 1
perimeter = 59
area = base × height/2 or bh/2
first plug in x value into height expression
4x + 2
4(3.5) + 2
14 + 2
16
area = 1 × 16/2
area = 16/2
area = 8