Answer:
are there any options or...
Step-by-step explanation:
Answer:
4 Chickens, 3 Oxen
Step-by-step explanation:
Given:
Known:
- Chickens have 2 legs
- Oxens have 4 legs
Solution:
- 4 Chickens have a total of 8 legs (2 + 2 + 2 + 2)
- 3 Oxen have a total of 12 legs (4 + 4 + 4)
- There are a total of 20 legs in total between the chickens and oxens.
280 * 0.6 = 168
168 is the amount it cost the store to buy the coat.
168 * 0.7 = 117.60
it would cost an employee 117.60 to purchase the coat at the sale
Distribute the -3
Subtract 12 from both sides
Divide by -9
(When you divide an inequality by a negative, flip the sign)
X>4
Answer:
there were 20 two point questions =
there were 30 five point questions
Step-by-step explanation:
Brandon took a 50-question exam worth a total of 160 points. There were x two-point questions and y five-point questions. How many of each type of question were on the exam?
x + y = 50 eqn 1
2x + 5y = 160 eqn 2
this can be solved using simultaneous equation
multiply eqn 1 by 2
2x + 2y = 100 eqn 3
subtract eqn 3 from 2
3y = 60
y = 20
Substitute for y in eqn 1
x + 30 = 50
x = 20