Answer: R = -5
Step-by-step explanation: 3r + 7= -8 is turned into 3(-5) + 7= 8. -15 + 7=8
The slope intercept formula would be
The Markup percentage is mathematically given as
M=42%
<h3>What is Mark up percentage?</h3>
The markup % may be determined by dividing the gross profit of a unit (the difference between its sales price and the amount it cost to create or buy for resale) by the amount that unit originally cost. If a product sells for $12 but only costs the corporation $8 to produce it, the markup percentage for that product is 50%, which can be calculated as (12 - 8) divided by 8.
Generally, the equation for is Total cost price mathematically given as
TCP= Pay+insurance
Therefore
TCP=35.5*1.6
TCP=284/5
Generally, the equation for is Total selling price mathematically given as
TSP=89.99+7.99
TSP=97.98
In conclusion, Mark up percentage is
M=0.4202898551*100
M=42%
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A]<span>Given that y varies jointly with w and x and inversely with z and y = 175 when w = 5, x = 20 and z = 4.
then
y=kwx/z
where k is the constant or proportionality given by:
k=yz/wx
but
y=175, when w=5, x=20, z=4
hence
k=(175*4)/(5*20)
k=7
Thus the equation is:
y=(7xw)/z
b]</span><span>find y when w = 2, x = 24 and z = 6.
y=(7*2*24)/6
y=336/6
y=56</span>
30−x2=37
<span><span><span>−x2</span>+30</span>=37</span>
<span><span><span><span>−x2</span>+30</span>−30</span>=37−30</span><span><span>
−x2</span>=7</span>
<span><span><span>−x2</span>−1</span>=<span>7−1</span></span><span><span>
x2</span>=−7</span>
<span>x=<span>±<span>√<span>−<span>7
Hoped I helped!</span></span></span></span></span>