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Leona [35]
3 years ago
14

Instructions:Select the correct answer.

Mathematics
1 answer:
Taya2010 [7]3 years ago
4 0
Bro its D i got it right
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On his bookshelf, Adam has the difference between two-thirds of Brett's books and two-thirds of Charlie's books. If Brett has 84
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Answer:

30 books

Step-by-step explanation:

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3 years ago
Which number make this sentence true 27:45=45:x​
PSYCHO15rus [73]

Answer:

x = 75

Step-by-step explanation:

We can write this as a proportion

27            45

--------- = --------

45            x

We can use cross products to solve

27 x = 45 *45

Divide each side by 27

27 x/27 = 45*45 /27

x = 75

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3 years ago
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triangle abc is rotated 90° clockwise about the origin. what is the rules that we can use to find the vertices location of the i
yuradex [85]

Answer:

The answer is when we rotating something 90 degrees clockwise about the orgin

(x,y) goes to (y,-x)

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2 years ago
Jack sold a black jacket for $150 and took 25% profit. At the same time Jack sold a red jacket for $150 and took a 25% lost.
Rashid [163]
D would be my answer but idk what I'm doing
7 0
3 years ago
Read 2 more answers
There are only green pens and red pens in a box. there are 3 more red pens than green pens in the box. sheila is going to take a
e-lub [12.9K]

Answer: 6 or 9

Step-by-step explanation:

Given the following :

Let the number of green pens = x

Number of red pens = x + 3

Probability of picking same color = 17/35

Taking two pens at random; probability of picking two pens of same color.

Probability of picking red on first pick then red on second pick ; or picking blue on first pick then blue on second pick

Probability = (Required outcome / Total possible outcomes)

Total number of pens = x + x + 3 = 2x + 3

Probability of picking red then red:

P(red first) = (x+3)/2x+3

P(red second) = x+3-1 / 2x+3-1 = (x+2)/2x+2)

Therefore, probability of red then red =

(x+3)/(2x+3) × (x+2)/2x+2)

= (x+3)(x+2) / (2x+3)(2x+2)

Probability of green then green:

P(first green) = x/(2x+3)

P(second green) = (x-1) / (2x+3-1) = (x-1) / (2x+2)

P(green then green) = x(x-1)/(2x+3)(2x+2)

Therefore,

[(x+3)(x+2) / (2x+3)(2x+2)] + [x(x-1)/(2x+3)(2x+2)] = 17/35

(x+3)(x+2)+x(x-1) / (2x+3)(2x+2) = 17/35

Cross multiply :

35(x+3)(x+2)+x(x-1) = 17(2x+3)(2x+2)

35(2x^2 + 4x + 6) = 17(4x^2 + 10x + 6)

70x^2 + 140x + 210 = 68x^2 + 170x + 102

70x^2 - 68x^2 + 140x - 170x + 210 - 102 = 0

2x^2 - 30x + 108 = 0

Now we have a quadratic equation which can be factoeized used using any known factorization method.

Factorizing this, we get

(x-6) = 0 or (x-9) = 0

x = 6 or x = 9

6 0
3 years ago
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