Answer:
- (ax + by + cz)/(a + b + c)
Step-by-step explanation:
<u>In terms of the scores we calculate the sum as:</u>
<u>The number is the sum of the frequencies:</u>
<u>Mean average score is:</u>
- (ax + by + cz)/(a + b + c)
Answer:
The amount of money in the account in addition to that earned from mowing lawns.
Step-by-step explanation:
125 is the amount in the account when 0 weeks are spent mowing lawns. Presumably, it is the initial value of the account before the first lawn money is added.
Hope to help
Answer:
a. x+8=21
b. x = 13
Step-by-step explanation:
The given number sentence is simplified as 1 3/5
<u>Step-by-step explanation:</u>
The given number sentence is 2-4/5 x 1/2
- In order to solve this, the operations must be performed based on the BODMAS rule.
- This means that, the operations should be performed in the order of Bracket, Of, Division, Multiplication, Addition and Subtraction.
Here, based on that above rule, the multiplication must be done in the first step and then subtraction should be done in the next step.
⇒ 2 - 4/5 × 1/2
⇒ 2 - 4/10
⇒ 2 - 2/5
Therefore, the given expression is reduced to 2- 2/5
cross multiply the denominator 5
⇒ (10-2) / 5
⇒ 8/5
Now, the expression is reduced to single term 8/5.
To further reduce the term, divide 8 by 5.
- The quotient is 1.
- The remainder is 3.
- The divisor is 5.
The answer is written in the form of 
⇒ 1 3/5
I think its D I hope you do good on your test! Good luck!