Answer:
D) q + d = 330
0.25q + 0.1d = 6
Step-by-step explanation:
Let q= numbers of quarters
d = number of dimes
q + d = 33 ...........(1)
q = 33 - d
xq + yd = 6 ..........(2)
We will consider the options to know the correct answer
From option A
q +d = 6
25q + 10d = 33
This is wrong
Option B
q + d = 60
0.25q + 0.1d = 33
This is also wrong
Option C
q+d = 33
25q + 10d = 6
Put q = 33 -d in equation 2
25(33 - d) + 10q = 6
825 - 25d + 10d = 6
825 - 15d = 6
-15d = 6-825
-15d = -819
d = -819/-15
d= 54.6
This is also wrong because d exceeds the combination.
Option D
q+d = 33
0.25q + 0.1d = 6
Put q = 33 -d in equation 2
0.25(33 - d) + 0.1d = 6
8.25 - 0.25d + 0.1d = 6
8.25 - 0.15d = 6
-0.15d = 6 - 8.25
-0.15d = -2.25
d = -2.25/ -0.15
d = 15
q = 33 - 15
q = 18
This is correct
If he needs 4/8 then he doesn't need anymore rope because 3/4 is equal to 6/8
<h2>
Hello!</h2>
The answer is:
C. 
<h2>Why?</h2>
In order to find the correct option, we need to substitute/evaluate the given values of "x" into each function.
Substituting into the first equation, option A:
... and so.
We can see that the option A is not the correct option since the obtained values do not match with the given values.
Substituting into the second equation, option B:
... and so.
We can see that the values obtained from the function do not match with the given values, so the option B is not correct.
Substituting into the third equation, option C:
So, since all the obtained values match with the given values, we can conclude that the correct option is the option C.
Have a nice day!
Answer:
£11.20 – £33
Step-by-step explanation:
The minimum value in the table is £11.20. The maximum value in the table is £33. The range of costs is the interval bounded by these values.
The difference between the maximum and minimum is £33 -11.20 = £21.80.
_____
"Range" has two possible meanings here. When "range" is applied to function values, it has one meaning. When "range" is applied to statistical data, it can have a different meaning.
- The extent of function values, from the minimum to the maximum.
- The difference between the maximum and the minimum.
Choose the meaning as defined in your curriculum material.
