Answer:
5°C
Step-by-step explanation:
We need to add 12 onto the -7:
-7 + 12 = 5
Answer:
Second month with $100 savings each
Step-by-step explanation:
Opening savings= $100 each
Additional savings
Sister 1 deposit = $20/month
Sister 2 deposit= $40 every 2 months.
First month= opening savings+ additional savings
Sister 1= $60+$20= $80
Sister 2=$60+$0= $60
Second month=
Total month savings+ additional deposit
Sister 1=$80+$20=$100
Sister 2=$60+$40=$100
At the end of the second month, the both have $100 each
Answer:
$15
Step-by-step explanation:
This question can be solved with the use of a system of equations.
Start by defining the variables that will be used:
Let the cost of 1 adult and 1 child to attend the show be $a and $c respectively.
Form 2 equations and label them:
a +2c= 35 -----(1)
2a +3c= 60 -----(2)
Let's solve by elimination. Since the question is only asking for the cost for an adult to attend the show, we can work to eliminate the c term. This can be done by ensuring that the coefficients of c in both equation has the same numerical value (the sign does not really matter for now). In this case, we can make the coefficient of c to be 6 since it is the lowest common multiple of 2 and 3.
(1) ×3: 3a +6c= 105 -----(3)
(2) ×2: 4a +6c= 120 -----(4)
Since the coefficient of c in both (3) and (4) are +6, we can subtract one equation from the other to eliminate the term c.
(4) -(3):
(4a +6c) -(3a +6c)= 120 -105
Expand:
4a +6c -3a -6c= 15
a= 15
Thus, it costs $15 for one adult to attend the show.
Additional:
Do check out the following for an example on solving a system of equations by the substitution method!
–26
B.
–4
C.
4
D.
26