55 hours 40 hours at $8 an hour equals $320 so then 15 hours which is the rest of the 55 hours at 12 an hour equals $180 and $320+$180=$500
1. false
2. false
3. true
Answer:
a. Discrete
b. Continuous
c. Continuous
d. Discrete
e. Discrete
f. Continuous
Step-by-step explanation:
The difference between discrete variable and continuous variable is that discrete variable can take a value in the form of whole numbers while continuous variable can take any form of value whole numbers or a fractions.
In other words when the values of variable can be counted then it is a discrete variable and when the values of variable can be measured then it is a continuous variable .
a.
Variable X consists of number of automobile accidents which can be counted. So, it is a discrete variable.
b.
Variable Y consists of length of time which can't be counted but can be measured. So, it is a continuous variable.
c.
Variable M consists of amount of milk produced which can't be counted but can be measured. So, it is a continuous variable.
d.
Variable N consists of number of eggs laid which can be counted. So, it is a discrete variable.
e.
Variable P consists of number of buildings permit issued which can be counted. So, it is a discrete variable.
f.
Variable Q consists of weight of grain which can't be counted but can be measured. So, it is a continuous variable.
Hope this helps you out :D
It’s 2 equations so in order to solve the previous system, you can use different methods, as for example substitution or addition of equations. In this case, you use the second one, due to the fact you have 7x in one equation and -7x in the other equation. In this way you can easily eliminate variable x and then solve for y. With the value of y you can replace in any of the two equations and solve for x.
7x-y=-1
-7x+3y=-25
Summarizing, you proceed as follow:
- add up the given equations
7x - y = -1
-7x+3y=-25
——————
0 +2y=-26
- solve for y in the previous equation
2y=-26
y=-26/2
y=-13
- replace the obtained value of y in one of the given equations, and solve for x
7x-(-13)=-1
7x+13=-1
7x=-1-13
7x=-14
x=-14
x=-14/7
x=-2
Hence, the solution of the given systems of equation is:
X=-2
Y=-13
All really need to do is pick one number. so, we will go with 6 and 87.
6 times 12 is 72 then you subtract that from $87.
That would be 15
To double check, you can use another one. 9 and 123.
9 times 12 is 108. subtract that from 123 and you get 15.
Your answer is B) $15
Hope I helped :)
