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BARSIC [14]
3 years ago
6

(Brainlist to 1st right)Simplify 8 over negative 4 ÷ negative 3 over 9 . (5 points)

Mathematics
2 answers:
nekit [7.7K]3 years ago
4 0

Answer:

6

Step-by-step explanation:

Eduardwww [97]3 years ago
4 0

Answer:

Its 6 but just give them Brainlist :>

Step-by-step explanation:

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I need help on this question, It's for Algebra 1 Simplify the following expression. (7x2 + 4x - 7) + (4x2 - 6x + 4)
Drupady [299]
You can only add like terms

exg
you can addd
2+4
2x+4x
2x^2+4x^2
2x^3+4x^3

but not
2+4x
2x^2+2x^3


so when adding like terms keep the exponent
4x+2x=6x
4x^3+2x^3=6x^3

(7x^2+4x-7)+(4x^2-6x+4)
get rid of the parenthasees
7x^2+4x-7+4x^2-6x+4
group like terms (x^2 with x^2 x with x, etc)

(7x^2+4x^2)+(4x-6x)+(-7+4)
add like terms
11x^2-2x-3

8 0
3 years ago
Find S5 for a geometric series for which a1=81 and r=1/9.
Minchanka [31]

ANSWER

S_5=91\frac{10}{81}




EXPLANATION


The sum of the first n terms of a geometric sequence is given by;


S_n=\frac{a_1(1-r^n)}{1-r} ,-1


Where n, is the number of terms and a_1 is the first term.


When n=5, we have a_1=81, we get;


S_5=\frac{81(1-(\frac{1}{9})^5)}{1-\frac{1}{9}}


S_5=\frac{81(1-\frac{1}{59049})}{1-\frac{1}{9}}


S_5=\frac{81(\frac{59048}{59049})}{\frac{8}{9}}




S_5=\frac{7381}{81}


S_5=91\frac{10}{81}




6 0
3 years ago
Can u pleaseee answer this no links
Mnenie [13.5K]

Answer:

1) 7/5

2) 9/8

3) 1/9

4) 13/5 which becomes 5/13

5) 27/8 which becomes 8/27

Step-by-step explanation:

→ The reciprocal of a number is just the 'flipped version' of it, the numerator becomes the denominator and the denominator becomes the numerator

7 0
3 years ago
Read 2 more answers
Sinxcosxtanx=1-cos^2x
ycow [4]

Step-by-step explanation:

sin  x \: cos  x \: tanx = 1 -  {cos}^{2} x \\ LHS \\= sin  x \: cos  x \: tanx \\  =sin  x \: cos  x \: \times  \frac{sin  x}{cos  x}  \\  = sin  x \: \times  \frac{sin  x}{1} \\  ={sin}^{2}  x \\  = 1 -  {cos}^{2} x \\  = RHS \\  \therefore \: sin  x \: cos  x \: tanx = 1 -  {cos}^{2} x \\ Hence \: Proved.

7 0
3 years ago
A sporting goods store sells 2 fishing reels and 4 fishing rods for $362. Later they sell 8 fishing reels and 2 fishing rods for
mixas84 [53]
Sorry about all the arrows, but hope this helps! Reels=$21 and rods=$80. All my work is shown.

7 0
3 years ago
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