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solniwko [45]
2 years ago
10

1/6•4•(-1/3)•9•(-1/2)•5

Mathematics
1 answer:
Free_Kalibri [48]2 years ago
4 0

Answer:

Step-by-step explanation:

its 5

1/6 *2 *3 *5=

1/3*3*5=

5

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Use the formula to evaluate the series 1/4 + 1/9 + 1/27 + 1/81.
Dmitriy789 [7]
Is the first term supposed to be 1/4, or did you actually mean 1/3?

I'll assume the latter. Write

S=\dfrac13+\dfrac19+\dfrac1{27}+\dfrac1{81}
S=\dfrac13+\dfrac1{3^2}+\dfrac1{3^3}+\dfrac1{3^4}
\dfrac13S=\dfrac1{3^2}+\dfrac1{3^3}+\dfrac1{3^4}+\dfrac1{3^5}
\implies S-\dfrac13S=\dfrac13-\dfrac1{3^5}
\dfrac23S=\dfrac13\left(1-\dfrac1{3^4}\right)
S=\dfrac12\left(1-\dfrac1{81}\right)
S=\dfrac{40}{81}
8 0
3 years ago
Brand X sells 21 oz. Bags of mixed nuts that contain 29% peanuts. To make their product they combine brand A mixed nuts which co
masha68 [24]

Answer:

Brand X has to mix 8.4 oz of brand A mixed nuts which contain 35% peanuts and 12.6 oz of brand B mixed nuts which contain 25%, to obtain 21 oz. Bags of mixed nuts that contain 29% peanuts.

Step-by-step explanation:

Hi

We define

B_{A}=1oz @ 35\%, wich means Brand A has 1 oz containing 35% peanuts.

B_{B}=1oz @ 25\%, wich means Brand b has 1 oz containing 25% peanuts.

So we can build an equiation system

(1) B_{a}+B_{b}=21

(2)0.35 \times B_{a}+0.25 \times B_{b}=0.29 \times 21, after fixing it a little

(2)0.35B_{a}+0.25B_{b}=6.09

As we can use any method to solve the system, I used a calculator wich thrown the following results B_{a}=8.4 \ oz and B_{b}=12.6 \ oz.

4 0
2 years ago
What is the simplest form of the following expression?
S_A_V [24]
\sqrt[3]{ \frac{12x ^{2} }{16y} } =  \sqrt[3]{\frac{3x ^{2} }{4y} }
7 0
3 years ago
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A pet store has 2 gray rabbits one eight of the rabbits at the pet store are gray. How many rabbits does the pet store have?
Eduardwww [97]
2 = 1/8
2 x 8 = 16
16 = 8/8
Glad to Help!
3 0
3 years ago
answer quickly!! Ella is trying to determine the side lengths of a triangle. She knows that the longest side is three times long
guajiro [1.7K]

Answer:

so x + 2x+10 + 3x is 6x+10 then set it to equal 142. x = 22 quick maths and then just set this to every side

so

shortest side:

22

medium:

54

longest: 66.

hope this helped, Mark branliest!

8 0
3 years ago
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