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LuckyWell [14K]
3 years ago
11

PRECALC AB

Mathematics
1 answer:
Naya [18.7K]3 years ago
3 0

Answer:

So, the original amount was 58 ounces , then in 15 secs, we get 28, So the amount we lost was 30 by 15, giving us the slope of<em> 2 ounces lost per second.</em> Now that we know the slope, we can answer the questions

A.  We can get the equation by finding the y int. (below) and writing it as y=-2x+68

B. Since we lost 2 ounces per second, we need to add up 2 ounces for every second lost. 2x5=10+58= <u><em>68 ounces at the beginning. </em></u>

C. Since we have the formula and the slope, we just need to find when y hits 0. and that is: <em>After 34 seconds.</em>

Step-by-step explanation:

:D hope this helps

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Need help with this thanks
lorasvet [3.4K]

Answer:

126/420

Step-by-step explanation:

you cross multipy 3/10 and x/420 then you get 1260=10x, then you divide by 10 and get 126

5 0
3 years ago
Which expression represents the value of the series below?<br> 3+ 7 + 11 + 15 + ... + 1,671
torisob [31]

Answer:

Step-by-step explanation:

This is an Arithmetic Series with common difference 4 and first term 3

so the nth term an = 3 + (n -1)4

= 4n - 1.

The sum of n terms

= n/2 (a1 + L)

= n/2(3 + 1671)

=  837n.

There are (1671-3) / 4 + 1 = 418 terms in the series,

so the total value of the series is 837*418

= 349,866.

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4 0
2 years ago
The diameter of a circle is 9 ft. Find its area to the nearest tenth.
Drupady [299]

Step-by-step explanation:

D=9

A=pie*radius^2

=3.14*9/2*9/2

=63.58

=64

6 0
3 years ago
Read 2 more answers
QUICk whoever gets the correct answer gets brainliest
pochemuha

Answer:

1/5

Step-by-step explanation:

8 0
3 years ago
Zoe found a sweatshirt that she wanted at jcpenny when she went shopping the other day. it was 30% off. what was the original co
oksian1 [2.3K]

The sale price was 30% off the original price, which means it was on sale for 70% of the original cost ( 100% - 30% = 70%)

To find the original cost, divide the sale price by the percent of the original cost:

21 / 0.70 = 30


The original price was $30


check:

30 x 0.3 = 9 ( amount of discount)

30 - 9 = 21 ( sale price)

6 0
3 years ago
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