Answer:
19
Step-by-step explanation:
f(x) = 3x^2-3x + 1
Let x = -2
f(-2) = 3( -2)^2-3*-2 + 1
= 3 * 4+6+1
= 12 +6+1
= 19
Answer:
12 weeks
Step-by-step explanation:
Josiah and kiri are each saving money josiah starts with 100$ in savings accound and adds 5$ per week . Kiri with 40$ in her savings account adds 10$ each week after how weeks Josiah and kiri will have the same amount of money in their savings account
Josiah:
100 + 5w
Kiri:
40 + 10w
Where,
w = number of weeks
After how weeks Josiah and kiri will have the same amount of money in their savings account
Equate the savings of the both of them
100 + 5w = 40 + 10w
100 - 40 = 10w - 5w
60 = 5w
w = 60/5
= 12
w = 12 weeks
Josiah and kiri will have the same amount of money in their savings account after 12 weeks
Answer: nah
Step-by-step explanation:
Let's write down what you said:
you double a number
2x
and then add 20,
2x+20
you get 4/7 of the original number.
2x+20=4/7x.
we can get rid of the fractionby multiplying everything by 7:
14x+140=4x
and subtract 4x from both sides:
10x+140=0
move 120 to the other side:
10x=-140
and divide by 10
x=-14
and that's the answer!
Which set of ordered pairs does not represent a function? A. {(10, 1), (–2, –16), (–6, 7), (5, 1), (8, –16), (–11, 9)} B. {(–2,
Gnoma [55]
Answer:
B. {(–2, –6), (–8, 13), (–7, –4), (–2, –8), (11, 8)}
Step-by-step explanation:
A set of ordered pairs represents a function if for each input, there is only one output.
In this question:
In option B, for the input -2, there are two outputs(-6 and -8). This means that B is the correct answer.
