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Sveta_85 [38]
2 years ago
15

Pls help i’m desperate

Mathematics
1 answer:
AlexFokin [52]2 years ago
3 0

I'm not 100% but I got x=-3/2

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Belinda has a bag of beads. She uses 3 of the beads to make a bracelet and 5 of the beads to make a necklace. She uses 36 more b
Anastasy [175]
I just helped my sister on this problem its kinda scary... :P

If you mean 1/3 and 3/5

Belinda has 135 beads in total.

Find 1/3 of 135.

135 ÷ 3 = 45.

Belinda uses 45 beads to make the bracelet.

Hope I helped :)
7 0
3 years ago
Explain why the X coordinates of the points where the graphs of the equations y=2^-x and y=4^x+3 intersects
sveta [45]
Hello,

y=2^(-x)
y=2^(2x)+3

==>2^(2x)+3=1/2^x
==>2^(3x)+3*2^x-1=0 (1)
Let's assume u=2^x
(1)==>u^3+3*u-1=0

which as 3 roots
u=0.322185354626 or
u = -0.161092677313 + i1.754380959784 or
u = -0.161092677313 - i1.754380959784.

Let's take the real solution

 0.322185354626=2^x
==>x=ln(0.322185354626) / ln(2)
 x=-1,6340371790199...

an other way is
f(x)=2^(3x)+3*2^x-1
f(-2)=1/64+3/4-1=-15/64 <0
f(-1)=1/8+1-1=1/8>0
==> there is a solution betheen -2<x<-1










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3 years ago
Juan can download new songs for $1.29 each. Write an equation to show how many songs he can download for $10.00
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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