(2/5)(x-1)<(3/5)(x+1) perform indicated multiplications
(2x-2)/5<(3x+3)/5 multiply both sides by 5
2x-2<3x+3 add 2 to both sides
2x<3x+5 subtract 3x from both sides
-x<5 divide both sides by -1 (remember to reverse direction of inequality sign when multiplying/dividing by a negative value)
x>-5
let's call airplanes "a" and helicopters "h".
The total number of models is 35. This means that a+h=35
4 times as many model airplanes as model helicopters. This means a=4h.
we can substitute this into the previous equation:
4h+h=35
5h=35
dividing by 5:
h=7
so he has 7 helicopters and 4*7=28 airplanes
Answer:
Step-by-step explanation:
what data
Answer:
if the printer produces 6 pages in 6 seconds it would be 1 page per second.
mathematically: 6 pages/6 seconds= 1 page/second
Answer:
Diameter = 49
radius = 49/2
circumference of circle is = <em>2</em><em>π</em><em> </em><em>r</em>
<em>=</em><em>. </em><em> </em><em>2</em><em>*</em><em>2</em><em>2</em><em>/</em><em>7</em><em>*</em><em>4</em><em>9</em><em>/</em><em>2</em>
<em>=</em><em> </em><em>1</em><em>5</em><em>4</em><em> </em><em>cm</em>
<em>hope</em><em> it</em><em> helps</em>
