The total number of coins is 9. Therefore
p+n+d = 9 (1)
There are two fewer nickels than dimes. Therefore
n = d - 2 (2)
From (1) and (2), obtain
p+(d-2)+d = 9
p + 2d = 11
p = 11 - 2d (3)
Total value:
0.01p + 0.05n + 0.10d = 0.53 (4)
Substitute (2) and (3) into (4).
0.01(11-2d) + 0.05(d-2) + 0.10d = 0.53
0.11 - 0.02d + 0.05d - 0.10 + 0.10d = 0.53
0.03d + 0.01 = 0.53
0.13d = 0.52
d = 4
p = 11 - 2d = 11 - 8 = 3
Answer: 3 pennies
This question was not correctly written
Correct Question
Mara thinks x ≤ 6 will earn the highest score here.
David thinks x < 6 will.
Who is correct?
Answer:
Mara is correct
Step-by-step explanation:
In the above question, we are given two inequality equations
1) Mara: x ≤ 6
2) David : x < 6
For David , x < 6 means the score which is represented by x is less than 6
For Mara, x ≤ 6 means the score which is represented by x is less than or equal to 6
Therefore, Mara is correct because x ≤ 6 will earn the highest score here.
$4.55 Add 5.95 and 9.76. You should get 15.45. Then you do 20-15.45=4.55
Answer:
Mode = 81, Median = 81 and Range = 39.
Step-by-step explanation:
The mode is the most occurring value which is 81.
The median is also 81. There are a total of 19 numbers arranged in ascending order so the median is the 10th number.
The range is the highest - lowest number = 100 - 61 = 39.
The equation 
equals to 
Step-by-step explanation:
We need to solve the equation:
Solving:
Adding 9 on both sides
Applying absolute rule: |u| < a and a > 0 then, -a < u < a
So, 
Now we have,
m-8>-9 and m-8 <9
m>-9+8 and m <9+8
m>-1 and m<17
Combining the intervals:
-1 < m < 17
So the equation equals to
Keywords: Inequality, Absolute rule
Learn more about inequality at:
#learnwithBrainly
