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Bond [772]
3 years ago
12

Help me out with these please!

Mathematics
2 answers:
garik1379 [7]3 years ago
8 0

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

trapecia [35]3 years ago
3 0

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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