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daser333 [38]
4 years ago
8

Solve the equation. 2^-x = 1 PLEASE HELP!!!

Mathematics
1 answer:
Zarrin [17]4 years ago
3 0
1 is the correct answer.

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Kim spent $33 on a magazine and
loris [4]

Answer:

Seven candy bars.

Explanation:

Suppose the number of candy bars purchased is x

The questions say he bought A magazine, means one magazine

the equation is:

4x + 5 = 33

4x = 33 – 5

4x = 28

x = 7

Kim bought 7 candy bars.

Hope this helps! :)

5 0
3 years ago
Read 2 more answers
Which problem is solved using this model?
Sonja [21]
A because it start at 20 and divided 1/2 each time. And when you solved 2/ 1/2 , you get 4 and that is correct because you have 4 arrows.
6 0
3 years ago
Solve for q 2/3=-1/3q
tensa zangetsu [6.8K]
Q in (-oo:+oo)

2/3 = (1/3)*q // - (1/3)*q
                                                                  
2/3-((1/3)*q) = 0                                             
                                                                       ddddddddd
                                                                       d              d      
                                                                       d              d
(-1/3)*q+2/3 = 0                                              d              d
                                                                       d              d
2/3-1/3*q = 0 // - 2/3                                       d              d
                                                                       d              d
-1/3*q = -2/3 // : -1/3                                       d              d
                                                                       d              d
q = -2/3/(-1/3)                                    ddddddd               dddddddd     
                                                     dd                                               dd
q = 2                                            dd                                                 dd
                                                    dd                   dddd                      dd
q = 2                                              dddddddddd          dddddddddddd
6 0
3 years ago
How do u factor this
PilotLPTM [1.2K]

You can factor a parabola by finding its roots: if

p(x)=x^2+bx+c

has roots x_1,\ x_2, then you have the following factorization:

p(x) = (x-x_1)(x-x_2)

In order to find the roots, you can use the usual formula

x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

In the first example, this formula leads to

x_{1,2} = \dfrac{-2\pm\sqrt{4+4}}{2} = \dfrac{-2\pm\sqrt{8}}{2} = \dfrac{-2\pm2\sqrt{2}}{2} = 1 \pm \sqrt{2}

So, you can factor

x^2-2x-1 = (x-1-\sqrt{2})(x-1+\sqrt{2})

The same goes for the second parabola.

As for the third exercise, simply plug the values asking

f(1.5)=-5.25

you get

f(-1.5) = 1.5c-3 = -5.25

Add 3 to both sides:

1.5c = -2.25

Divide both sides by 1.5:

c = 1.5

7 0
3 years ago
Please help me this is due midnight ​
rjkz [21]

Answer:

Wait does it mean the actual real life distance or the distance on paper?

Step-by-step explanation:

If its real like just google it lol.

5 0
3 years ago
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