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Alexxandr [17]
2 years ago
15

PLEASE HELP WITH THIS

Mathematics
2 answers:
Lady bird [3.3K]2 years ago
5 0

Answer:

33 - 2x =  {x }^{2}  + 2x + 1 \\  {x}^{2}  + 4x - 32 = 0 \\ x = 8 \\   \\ x = 4

KengaRu [80]2 years ago
5 0

Answer:

x = 4

Step-by-step explanation:

(33-2x)^(1/2) = x + 1

33-2x = x^2 + 2x + 1           [square both sides]

x^2 + 2x + 1 - 33 +2x = 0

x^2 + 4x - 32 = 0

(x - 4)(x + 8) = 0

x = 4

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the first term in a geometric series is 64 and the common ratio is 0.75. Find the sum of the first 4 terms in a series.
Rufina [12.5K]

hi

u0 = 64       with  u(n+1) = un *0.75  

u3 =  64 *0.75^3   = 27

sum is :      64 *  ( 0.75^4 -1)  / 0.75-1  = 175

manual proof :    64 + 48+36+27 = 175

6 0
3 years ago
Which of the following is an equivalent expression to: -2(-5x - 8)
exis [7]

Answer:

10x + 16

Step-by-step explanation:

Doing the distributive property, we get the answer 10x + 16.

5 0
3 years ago
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satela [25.4K]
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5 0
3 years ago
The product of three, and a number increased by seven, is -36 .. what is the number ?
Zina [86]

Answer:

Step-by-step explanation:

3(x+7)=-36

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4 0
3 years ago
Solve by substitution <br>-4x-2y=-12 <br>4x+8y=-24
kykrilka [37]
I hope this helps you



-4x-2y+4x+8y= -12-24



6y= -36


y= -6



-4x-2. (-6)= -12


-4x+12= -12


-4x= -24


x=6


(6, -6)
5 0
3 years ago
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