Answer:
-34
Step-by-step explanation:
22+n=-12
n=-12-22
n=-34
When you bring a positive constant to the other side of the equal sign it goes negative and vise versa. Then you combine like terms.
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Answer:
14.96
Step-by-step explanation:
1496mm *mm = 1496 * 1/10 cm * 1/10cm =1496/100 cm2
Answer:
30cm x 72 cm
Step-by-step explanation:
The perimeter is the measurements of all sides added together. Let's start by dividing the perimeter by 2, so we have the sum of the length and width. This gives us 102cm. Let's call the width <em>x</em>, and the length <em>y</em>. We know <em>y</em> is <em>x</em> times 2 plus 12. (2x + 12) So, we know [x + y = x + (2x + 12)]. So let's solve.
x + y = x + (2x + 12)
102 = x + (2x + 12)
102 = 3x + 12
102 - 12 = 3x + 12 - 12
90 = 3x
90/3 = 3x/3
30 = x
The width is 30cm.