Need answer ASAP. Worth 25 points

There were two containers of oil. There was twice as much oil in the second container as in the first one. After using 13 liters

Iteru [2.4K]

Answer:

48 liters

Step-by-step explanation:

First container = x

Second container has twice as much oil.

Second container = 2x

13 liters of oil was used from first container.

x - 13

7 liters of oil was used from the second container.

2x - 7

Second container has 3 times more oil than the first one.

2x - 7 = 3(x - 13)

x - 7 = 3(x - 13)

x - 7 = 3x - 39

2x = 32

x = 16

First container = 16 liters

second container = 16 x 2 = 32 liters

Total = 16 + 32 = 48 liters

3 0

3 years ago

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What is the slope of the line y= x/5+16

alexgriva [62]

The slope should be 2

3 0

4 years ago

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N = 3(k + m)<br>Solve for m

Natali5045456 [20]

Answer:

m = (n/3) - k

Step-by-step explanation:

n = 3(k + m)

n = 3k + 3m

n - 3k = 3m

3m/3 = (n - 3k)/3

m = (n/3) - k

6 0

3 years ago

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The class of 2004 holds a reunion each year. In 2005, 87.5% of the 120 graduates attended. In 2006, 90 students went, and in 200

vampirchik [111]

Answer:

15 students

Step-by-step explanation:

% of students attended reunion in 2005 = 87.5% of 120

no of students attended reunion in 2005 = 87.5/100 * 120 = 105.

no of students attended reunion in 2006 = 90

no of students attended reunion in 2007 = 75

So , the series for the given year is

105, 90, 75

we can see that this arithmetical progression series

in arithmetical progression series

common difference is = nth term - (n-1)th term

lets takes 3rd and second term as nth term and (n-1)th term

common difference(d) is =75 - 90 = -15

n th term for any arithmetical progression series is given by

nth term = a + (n-1) d

where a is the first term

n is the nth term

d is the common difference

we have to calculate number of students in reunion of of 2010

as reunion began from 2005

2005,2006,2007,2008,2009,2010

so, 2010 is 6th term in series of 105, 90, 75....

6th term = a + (n-1) d

a is 90

6th term = 90+ (6-1)* -15

6th term = 90+ (5)* -15 = 90 - 75 = 15.

Thus, 15 students will attend reunion of 2010

5 0

3 years ago

Which of the following is equivalent to the expression log2⁡a=r? 2a = r logr⁡2 = a 2r = a log2⁡r = a

olganol [36]

9514 1404 393

Answer:

(c) 2^r = a

Step-by-step explanation:

The relationship between log forms and exponential forms is ...

$\log_2(a)=r\ \Leftrightarrow\ 2^r=a$

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<em>Additional comment</em>

I find this easier to remember if I think of a logarithm as being an exponent.

Here, the log is r, so that is the exponent of the base, 2.

This equivalence can also help you remember that the rules of logarithms are very similar to the rules of exponents.

4 0

3 years ago

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