Average × the number of battery = the sum of battery life
48% × the number of battery = 288%
the number of battery = 288% : 48%
the number of battery = 6
He has 6 laptops
Answer:
y=3x-4 is the equation of the line. so the slop of the line is 3x and the y-intercept is -4.
Step-by-step explanation:
i hope this helps :)
#1.
Question: <span><span><span><span>2x^2 </span>− 3x</span> − 35</span> = 0</span>
<span><span><span>Step 1: Factor left side of equation): (<span>2x + 7</span>) </span><span>(x − 5) </span></span>= 0</span>
Step 2: Set factors equal to 0.): <span><span><span>2x + 7 </span>=<span><span> 0 or x </span>− 5</span></span> = 0</span>
ANSWER: <span><span>x =<span><span><span> −7/2</span> or </span>x </span></span>= 5</span>
_____________________________________________________
#2.
Question: 56z^2 + 2 = 22z
<span>Step 1: Subtract 22z from both sides.):
</span><span><span><span><span>56<span>z^2 </span></span>+ 2</span> −<span>22z</span></span> = <span><span>22z </span>−<span> 22z
</span></span></span><span><span><span><span>56<span>z^2 </span></span>−<span> 22z </span></span>+ 2 </span>= 0</span>
<span>Step 2: Factor left side of equation.):
</span>
<span><span><span>2<span>(<span><span>7z </span>− 1</span>)</span></span><span>(<span><span>4z </span>− 1</span>)</span></span> = 0
</span><span>Step 3: Set factors equal to 0.):
</span>
<span><span><span><span>7z </span>− 1 </span>=<span><span><span> 0 or </span><span>4z</span></span> − 1</span></span> = 0
ANSWER: </span><span><span>z =<span><span><span> 1/7</span> or </span>z </span></span>=<span> 1/4</span></span>
$744.43, #3, and 17,922 ok
Answer:
The measure of the angle is 36°
Step-by-step explanation:
Let the measure of angle be x
Supplementary angles : A pair of angles whose sum is 180° is called supplementary angles
So, Supplement of x = 180°-x°
Complementary angles A pair of angles whose sum is 90° is called complementary angles
So, Complement of x = 90°-x°
We are given that Three times the measure of a supplement of an angle is eight times the measure of a complement of the angle
So, 3(180-x)=8(90-x)
540-3x=720-8x
8x-3x=720-540
5x=180
x=36
So, the measure of the angle is 36°