Help me out with these please!
2 answers:
Step-by-step explanation:
1. a) q=4+0.8(7)
q=4+5.6
q=9.6
b) q=4+0.8(100)
q=4+80
q= 84
2. a) 12=4+0.8p
-4 -4
<u>8</u>=<u>0.8p</u>
0.8 0.8
10=p
b) 60=4+0.8p
-4 -4
<u>56</u>=<u>0.8p</u>
0.8 0.8
70=p
Answer:
Q1. a) q= 9.6
b) q= 84
Q2. a) p= 10
b) p= 70
Step-by-step explanation:
Substitute the equation with the given value and solve the equation to arrive at the answer.
Q1. a) q= 4 +0.8p
When p= 7,
q= 4 +0.8(7)
q= 4 +5.6
q= 9.6
b) q= 4 +0.8p
When p= 100,
q= 4 +0.8(100)
q= 4 +80
q= 84
Q2. a) q= 4 +0.8p
When q= 12,
12= 4 +0.8p
0.8p= 12 -4 <em>(</em><em>-4</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
0.8p= 8
p= 8 ÷0.8 <em>(</em><em>÷</em><em>0.8</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
p= 10
b) q= 4 +0.8p
When q= 60,
60= 4 +0.8p
0.8p= 60 -4 <em>(</em><em>-4</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
0.8p= 56
p= 56 ÷0.8 <em>(</em><em>÷</em><em>0.8</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
p= 70
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