3 years ago

(06.03)

Mathematics

2 answers:

Anna71 [15]3 years ago

8 0

Answer: R=3 Bracelets per HR

O=2 Bracelets per HR

Step-by-step explanation: She can go faster

shusha [124]3 years ago

7 0

Answer:

I just need popints

Step-by-step explanation:

I just need points

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You were shopping for a Christmas present. You found the item on sale for 20% off. Tax is 8%. If the original price was $450, ho

klio [65]

Answer:

$Cost\ of\ gift=\$ 388.8$

Step-by-step explanation:

Original Price $=\$450$

Discount:

Discount $=20\%$

$20\%\ of\ 450=\frac{20}{100}\times 450=90\\\\Discounted\ Price=450-90=\$360$

Tax:

Tax $=8\%$

$8\%\ of\ 360=\frac{8}{100}\times 360=28.8\\\\Final\ cost=360+28.8=\$388.8$

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3 years ago

Help!! A cylindrical water tank is being filled with a hose. The depth of the water increases by 1 1/4 ft per hour. How many hou

nordsb [41]

Depth: 7/2 feet
Rate: 5/4 feet per hour

Time = depth / rate of filling
Time = 7/2 / 5/4
Time = 14/5
Time = 2 4/5 hours

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2 years ago

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For the following telescoping series, find a formula for the nth term of the sequence of partial sums

gtnhenbr [62]

I'm guessing the sum is supposed to be

$\displaystyle\sum_{k=1}^\infty\frac{10}{(5k-1)(5k+4)}$

Split the summand into partial fractions:

$\dfrac1{(5k-1)(5k+4)}=\dfrac a{5k-1}+\dfrac b{5k+4}$

$1=a(5k+4)+b(5k-1)$

If $k=-\frac45$ , then

$1=b(-4-1)\implies b=-\frac15$

If $k=\frac15$ , then

$1=a(1+4)\implies a=\frac15$

This means

$\dfrac{10}{(5k-1)(5k+4)}=\dfrac2{5k-1}-\dfrac2{5k+4}$

Consider the $n$ th partial sum of the series:

$S_n=2\left(\dfrac14-\dfrac19\right)+2\left(\dfrac19-\dfrac1{14}\right)+2\left(\dfrac1{14}-\dfrac1{19}\right)+\cdots+2\left(\dfrac1{5n-1}-\dfrac1{5n+4}\right)$

The sum telescopes so that

$S_n=\dfrac2{14}-\dfrac2{5n+4}$

and as $n\to\infty$ , the second term vanishes and leaves us with

$\displaystyle\sum_{k=1}^\infty\frac{10}{(5k-1)(5k+4)}=\lim_{n\to\infty}S_n=\frac17$

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3 years ago

What is the solution to the equation-0.2(x-20)=44-x

Black_prince [1.1K]

Answer:

x = 50

Step-by-step explanation:

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2 years ago

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The following set of numbers represents the number of hours a group of students spent reading over the course of two weeks.

irina1246 [14]

Answer:

i don't know. sorry!

Step-by-step explanation:

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2 years ago