Ken paid $12 for two magazines the cost of each magazine was a multiple of $3 what are the possible prices of the magazines

Answers

Answer 1
Answer: The price could have been 6 each or 9 for one and 3 for the other

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Find the next three terms. 243, -81, 27, -9...

Find the function rule.x = -2  -1   0  1  2
y=   9   4  -1  -6 -11

Please help!! 10 pts.

Answers

Finally figured it out :D

The function rules is:
y = -5x - 1  


9 = -5(-2) - 1
4 = -5(-1) - 1
-1 = -5(0) - 1
-6 = -5(1) - 1
-11 = -5(2) - 1

Generate the first five terms in the sequence using explicit formulabn=-2n+1
a) 1, 3 5, 7, 9
b) 9 ,7 ,5 ,3, 1
c) -9, -7, -5, -3, -1
d)-1, -3, -5, -7, -9

Answers

i got b i did this question before but dont take my word for it im not one hundred percent sure

Solve Systems by Substitution
x+y=-1
3x-2y=2
and
x=y-2
3x-4y=-13

Answers

Problem one: 
1.) Isolate one variable of one equation
x+y-x=-1-x
y=-1-x
2.) Plug in equation for isolated value into other original equation
3x-2(-1-x)=2
3.) Distribute
3x+2+2x=2
4.) Add like terms
5x+2=2
5.) Subtract two from both side
5x=0
6.) Divide both sides by 5
x=0
7.) Plug in numerical value for x into one equation (original or not)
0+y=1
8.) Subtract zero from both sides
y=1
For the first problem, the answer is: x=0, y = 1

For the second problem, follow very similar steps:
3(y-2)-4y=-13
3y-6-4y=-13
-y-6=-13
-y=-7
y=7

x=y-2
x=7-2
x=5
That's your answer for the second problem: x=5, y=7

Hope this helps!
1x + 1y = -1 ⇒ 3x - 3y = -3
3x -  2y = 2  ⇒ 3x - 2y = 2
                                -y = -5
                                  y = 5
                       3x - 2(5) = 2
                         3x - 10 = 2
                              +10  +10
                                3x = 12
                                 3      3
                                 x = 4
                          (x , y) = (4, 5)

1x - 1y = -2   ⇒ 3x - 3y = -6
3x - 4y = -13 ⇒ 3x - 4y = -13
                                   y = 7
                        3x - 4(7) = -13
                         3x - 28 = -13
                              +28    +28
                                3x = 15
                                 3      3
                                  x = 5
                            (x, y) = (5, 7)

Which represents a quadratic function? f(x) = 2x3 + 2x2 – 4 f(x) = –7x2 – x + 2 f(x) = –3x + 2 f(x) = 0x2 + 3x – 3

Answers

Answer:

Second option: f(x) =-7x^2 -x + 2

Step-by-step explanation:

A quadratic function has the form:

f(x)=ax^2+bx+c

(Where a\neq0)

You can observe that the highest exponent of a quadratic function is 2.

Then, let's check which of the options shows a quadratic function:

1) f(x) = 2x^3 + 2x^2 - 4

Its highest exponent is 3, then this is not a quadratic function.

2) f(x) =-7x^2 -x + 2

Its highest exponent is 2 and a\neq0, then this is a quadratic function.

3)f(x) = -3x + 2

Its highest exponent is 1, then this is not a quadratic function.

4) f(x) =0x^2+3x-3

You can observe that a=0, then this is not a quadratic function.

Answer:

B. f(x) = –7x2 – x + 2

Step-by-step explanation:

the answer above me is right so I'm just shortening it so the answer is easy to find, have a great day !

jeff helped repair one half of the bicycles in a bike shop last week. if jeffn worked on 5 bicycles how many bicycles did the shop repair last week

Answers

Well, if Jeff worked on half of them. And he worked on five in total. Then 5 is half of what?
Answer= 10

kim bought a poster that cost 8,95 and some colored pencils. The total cost was 21.35. How much did the colored pencils cost?

Answers

when you subtract 21.35 by 8.95 you you get the answer 12.40
The answer to that question is 12.40 because if you subtract 21.35- 8.95 the answer is 1240