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Varvara68 [4.7K]
2 years ago
15

A drawer contains 3 red pens, 4 blue pens, and 7 black pens. If you randomly pull

Mathematics
2 answers:
Shalnov [3]2 years ago
4 0

Answer:

4/14 or 2/7

Step-by-step explanation:

there are 3 red pens, 4 blue, and 7 black

add those numbers to get the total (14 pens) then take the blue pens (4) to make the fraction 4/14 (4 blue out of 14 pens total). Then simplify the fraction.

olga nikolaevna [1]2 years ago
3 0

Answer:

i belive the answer is 3/14

Step-by-step explanation:

I could be wrong

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the 41st term of the arithmetic sequence is -539 and the 54th term is -708. Find the value of the 80th term
yulyashka [42]

Answer:

a _{n} = a _{1} + (n - 1)d \\ a _{41} =  - 534 \\ a _{54} =  - 708 \\  a _{41} =  a _{1} + (41 - 1)d = - 534  \\  a _{1} + 40d = - 534 \:  \: ...(1)\\ a _{54} =  a _{1} + (54 - 1)d =- 708 \\ a _{1} + 53d = - 708 \:  \: ...(2)

Try to solve the similtanious equation to find the first term and the common difference, then use that information to figure out the 80th term... Update me if you need further help ...

7 0
3 years ago
How do you find the fraction of 0.35
SOVA2 [1]

Answer:

\frac{7}{20}

Step-by-step explanation:

0.35 is the same as 35/100

which can be simplified to 7/20

4 0
2 years ago
What is the value of x in the figure below?
zhenek [66]
Again, nice problem. These are not super easy. You need to imagine the triangles in the figure and relate sides.

For instance: ADC, its hypotenuse is 15

For ABC, it is 20,

so 20/15 is the ratio between both triangles. Now let's choose the side with 'x'

x is one side of ADC, the corresponding side in ABC is 15 (the second longest sides). You need to rotate the triangles, etc ... That's the tricky part :)

So:

20/15 =15/x ----> x = 15*15/20 = 225/20 = 45/4

Which is C

Not sure whether it's too late to help you though!!!!

Also notice that it's kind of a product rule:

x * 20 = 15 * 15

I am sure the book explains a short way of getting to this equation, like sides opposite, blah blah, but what i told you is the reason. You asked for understanding it! Best luck!
7 0
2 years ago
Six times a number is two hundred and forty what is The number
butalik [34]
240/6=x
x=40

the number is 40
4 0
3 years ago
Read 2 more answers
Give three ratios equivalent to 9:5
Bumek [7]
1. 18:10
2. 27:15
3. 36:20
5 0
3 years ago
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