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dimulka [17.4K]

3 years ago

9

Petrolyn motor oil is a combination of natural oil and synthetic oil. it contains 2 liters of natural oil for every 3 liters of

synthetic oil. if 118 liters of natural oil are used, how many liters of petrolyn oil will be made?

1 answer:

kykrilka [37]3 years ago

8 0

Take 118/2 to get your answer

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Scott is reading two books at the same time to prepare for a report he is writing. So far, he has read 407 of the total number o

Hitman42 [59]

Answer:

The system of equations are

x+y=557

$\frac35x+\frac56 y=407$

The total pages in shorter book is 245

The total pages in longer book is 312

Step-by-step explanation:

Given that,

Scott has read 407 of the total number of 557 pages, which $\frac35$ of the shorter book and $\frac56$ of longer book.

Total number of pages of shorter book be x and longer book be y.

Then,

$\frac35$ page of the shorter book $=\frac35 x$

$\frac56$ pages of the longer book = $\frac56y$

So, he has read $=\frac35x+\frac 56y$

Total number of pages of both book is = x+y

According to the problem,

x+y=557.........(1)

$\frac35x+\frac56 y=407$ .......(2)

We can write equation (2) as

$\frac35x+\frac56 y=407$

$\Rightarrow \frac{18x+25y}{30}=407$

$\Rightarrow {18x+25y}=407\times 30$

$\Rightarrow {18x+25y}=12,210$ ......(3)

Now 18 times of equation (1) subtract from equation (3)

18x+25y=12210

18x+18y=10026

- - -

_______________

25y-18y=12,210-10,026

⇒7y=2,184

$\Rightarrow y=\frac{2184}{7}$

⇒y= 312

Plug y=312 in equation (1)

x+312=557

⇒x=557-312

⇒x=245

The total pages in shorter book is 245

The total pages in longer book is 312

5 0

2 years ago

The value, in dollars, of a 1951 bowman willie mays baseball card is given by the function b left parenthesis x right parenthesi

vovikov84 [41]

In more conventional notation, ...
b(x) = -15x² +450x +325 . . . . 0 ≤ x ≤ 24

For 1990, x = 1990 - 1983 = 7
b(7) = -15·7² +450·7 +325 = 2740

The value of the card in 1990 was 2740.

6 0

2 years ago

What is the net change in how many bags are on the shelf from

Temka [501]

Answer:

-2

Step-by-step explanation:

The computation of net change from the beginning of Tuesday to the end of Monday is shown below:-

The change at the last of Tuesday

Change = Restock - Sales

= 6 - 5

= 1

Here it indicates that the number of bags is rise by 1

The change at the last of Wednesday

Change = Restock - Sales

= 12 - 8

= 4

Here it indicates that the number of bags is rise by 4

The change at the last of Thursday

Change = Restock - Sales

= 12 - 2

= 10

Here it indicates that the number of bags is rise by 10

The change at the last of Friday

Change = Restock - Sales

= 18 - 19

= -1

Here it indicates that the number of bags is fall by -1

The change at the last of Saturday

Change = Restock - Sales

= 24 - 22

= 2

Here it indicates that the number of bags is rise by 2

The change at the last of Sunday

Change = Restock - Sales

= 0 - 15

= -15

Here it indicates that the number of bags is fall by -15

The change at the last of Monday

Change = Restock - Sales

= 0 - 3

= -3

Here it indicates that the number of bags is fall by -3

According to the given situation, it is equivalent the algebraic sum of every change

So,

Net change = 1 + 4 + 10 + (-1) + 2 + (-15) + (-3)

Using associative property: (1 + 4 + 10 + 2) - (1 + 15 +3)

Simplifying: 17 - 19 = -2

7 0

2 years ago

What is the slope if the line shown below

posledela

You didn’t attach a photo can you tell me if there were numbers

8 0

1 year ago

Read 2 more answers

6 to the 2nd power ÷ 2 ( 3 ) + 4 =

Slav-nsk [51]

<span>Use the order of operation, PEMDAS.

6²÷2(3) +4

36/2(3)+4

=(18)(3)+4

=54+4

=58</span>

5 0

2 years ago