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2 years ago

What is 338 divided by 10.7

Mathematics

1 answer:

GrogVix [38]2 years ago

7 0

31.588785 is the answer I believe you are looking for :)

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A line has a rise of 3 and a run of 12. find the slope of the line. type a numerical answer in the space provided. if necessary,

muminat

The slope is always going to be rise over run so the answer is 3/12 but in simplest form it is 1/4

7 0

3 years ago

The product of a number and 7, decreased by the number is equal to 42. find the number.

lozanna [386]

Let the number be x.
7x-x=42
6x=42
x=7
the number is 7

7 0

2 years ago

Mongoose McHuffy has a bike shop. He only has bicycles and tricycles in stock. In total he has 21 items in stock with a total of

olasank [31]

Answer:

12 bikes

9 tricycles

Step-by-step explanation:

x+y=21

2x+3y=51

x=-y+21

2(-y+21)+3y=51

-2y+42+3y=51

y+42=51

y=9

x=12

5 0

3 years ago

What would x equal and the work to show why? Thanks!

bija089 [108]

Answer:

x=450

Step-by-step explanation:

1. you cross multiply 1200x3= 3600

2. Divide 3600 by 8

3. Solution is 450

8 0

3 years ago

Read 2 more answers

to arrive at 2000 liters of 60% saline solution the attendant has to mix a 90% and a 40% saline solution. How many liters of eac

CaHeK987 [17]

Answer:

800 liters of 90% saline solution and 1200 liters of 40% saline solution should be used.

Step-by-step explanation:

Given:

At 2000 liters of 60% saline solution the attendant has to mix a 90% and a 40% saline solution.

Now, to find the number of liters of saline solution each should be used.

Let the liters of 90% saline solution mix be $x.$

And let the liters of 40% saline solution mix be $y.$

So, the total number of liters:

$x+y=2000.$

$y=2000-x\ \ \ ....(1)$

Now, the total percentage of saline solution:

$90\%\ of\ x+40\%\ of\ y=60\%\ of\ 2000$

$\frac{90}{100}\times x+\frac{40}{100}\times y=\frac{60}{100}\times 2000$

$0.9x+0.4y=1200$

Substituting the value of $y$ from equation (1) we get:

$0.9x+0.4(2000-x)=1200$

$0.9x+800-0.4x=1200$

$0.5x+800=1200$

Subtracting both sides by 800 we get:

$0.5x=400$

Dividing both sides by 0.5 we get:

$x=800.$

The liters of 90% saline solution mix = 800.

Now, substituting the value of $x$ in equation (1) to get the liters of 40% saline solution:

$y=2000-x$

$y=2000-800$

$y=1200.$

Thus, the liters of 40% saline solution = 1200.

Therefore, 800 liters of 90% saline solution and 1200 liters of 40% saline solution should be used.

8 0

3 years ago