Answer:
-0.03125
Step-by-step explanation:
The second result is more precise because it's in millilitre,so if the first were to be fully precise,it should have been 78.6 cm
Answer:
Price per unit of pizza=p=$8.76
Step-by-step explanation:
This can be expressed as;
The total price=Unit price per pizza×number of pizzas ordered
where;
The total price=26.28
Unit price per pizza=p
number of pizzas ordered=3
Replacing;
26.28=p×3
p=(26.28/3)=8.76
Price per unit of pizza=p=$8.76
Answer:
Cost of a kit is $20
cost of a microscope is $80
Step-by-step explanation:
Here, we want to write a set of equations and solve
Let the cost of a microscope be $m while the cost of a kit be $k
Total cost of 38 microscopes will be 38 * m = $38m
Total cost of 47 kits = 47 * k = $47k
The sum of these is $3980
That will be;
47k + 38m = 3980 ••••••(i)
A microscope cost 4 times a kit
Mathematically;
m = 4k •••••••••(ii)
Substitute ii into i
47k + 38(4k) = 3980
47k + 152k = 3980
199k = 3980
k = 3980/199
k = $20
Recall;
m = 4k
m = 4 * 20 = $80
Answer:
a
Step-by-step explanation:
it has to have to same slope as the first equation so you have y=5x+b then what you do is plug in the points and solve for b. which gives you 2. so your final equation is y=5x+2
7=5+b
-5 -5
2=b