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suter [353]
3 years ago
8

A shop sells packs of black pens, packs of red pens and packs of green pens.

Mathematics
1 answer:
olchik [2.2K]3 years ago
4 0

Answer:

85 pens  

Step-by-step explanation:

The computation of the number of green pens sold is shown below;

As the number of black pens, red pens, and green pans is 3:5:6

And, the ratio of sold of black pens, red pens, and green pans is 7:3:4

So, the ratio of pens in a number of pens is

= 3 × 7 : 5 × 3 : 4 × 6

= 21: 15 : 24

= 7: 5 : 8

And, the total of 212 pens are sold

So, the number of green pens sold is

= 8 × 212 ÷ (7 + 5 + 8)

= 85 pens  

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kodGreya [7K]

Answer:

7.) 16.7

Step-by-step explanation:

7). First you have to find the length of the line with the triangle that is at a 90 angle with the longest side of the triangle

Using the pythagrorem theorem a² + b² = c²

4² + b² = 5²

b² = 5² - 4²

b² = 25 - 16

b² = 9

√b² =√9

b = 3

next you do the same thing to find the missing segment of the longest side

3² + b² = 13²

b² = 169 - 9

b² = 160

b = √160 or  ≈ 12.7

12.7 + 4 = 16.7

so 16.7 is the length of that side


3 0
4 years ago
2. A CD is marked with a sale sticker saying it is 56% off. The original price is $10.17. What is the sale price?​
klasskru [66]

Answer:

4.4748

Step-by-step explanation:

$10.17- 56% = $4.4748

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6 0
3 years ago
What is this?<br><br> :) Help Plz!!!
Eduardwww [97]
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3 years ago
Can anyone please help me why i got 3/4 marks on this question what am i missing?
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Read 2 more answers
2. Which of the following methods can't be used to find the zeros of a function?
ser-zykov [4K]

Answer:

The correct option is;

Substitute x = 0 in the function  and solve for f(x)

Step-by-step explanation:

The zeros of a function are the values of x which produces the value of 0 when substituted in the function

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A. Substituting x = 0 will only give the point where the curve or line of the function crosses the y-axis,

Therefore, substituting x = 0 in the function  can't be used to find the zero's of a function

B. Plotting a graph of the table of values of the function will indicate the zeros of the function or the point where the function crosses the x-axis

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4 years ago
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