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3 years ago

14

Please help me ASAP

2 answers:

In-s [12.5K]3 years ago

8 0

Answer:

64

Step-by-step explanation:

4*4*4=64

vichka [17]3 years ago

6 0

Answer:

12

Step-by-step explanation:

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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

64 as a mixed number

Kaylis [27]

I'm perdy sure it's 64/1 but yk it could be something else XD :D good luck!

6 0

3 years ago

There are 32 girls and 18 boys in the chorus. what percent of the students in the chorus are girls?

klio [65]

So the total number of students is 50, and you want to find 32/50. and that is equal to 64%

7 0

3 years ago

Read 2 more answers

Simplify 5 (2 squared) -1^2

Serggg [28]

19 is the answer since 2 to the 2nd power is 4 5×4=20 -1 to the 2nd power is -1
20-1=19

8 0

3 years ago

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A shipping container will be used to transport several 140-kilogram crates across the

velikii [3]

Answer:

91.42 crates

Step-by-step explanation:

Let

Greatest Number of 140kg crates = x

weight of crate = 140-kilogram

Weight of other shipment = 13200 kilograms

greatest weight of container = 26000 kilograms

Weight of other shipment + (weight of crate * number of crates) ≤ greatest weight of container

13,200 + 140x ≤ 26,000

140x ≤ 26,000 - 13,200

140x ≤ 12,800

x ≤ 12,800/140

x ≤ 91.42 kilograms

Greatest Number of 140kg crates = 91.42 crates

8 0

3 years ago