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alina1380 [7]
3 years ago
7

"If you subtract 16 from my number and multiply the difference by -5 ​, the result is 20 ​." What is ​'s ​number?

Mathematics
1 answer:
Phoenix [80]3 years ago
4 0

Answer:

Let the original number be x.

Thus,

\\  - 5(x - 16) = 20 \\  \\  - 5x + 80 = 20 \\  \\ 5x = 60 \\  \\ x = 12

So, The original number is 12.

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Answer:

3/8 to 2

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value of the ratio is 0.375/2

6 0
3 years ago
A student brings whole cherry and cheese danishes to his class for his birthday. The number of cherry danishes he brings is at l
LenKa [72]

Let the number cherry Danishes be x

Let the number cheese Danishes be y

 

Given,

The number of cherry Danishes the student brings is at least 3 more than 2/3 the number of cheese Danishes

x ≥ 3 + (2/3)y

 

Given,

The number of cherry Danishes the student brings is no more than twice the number of cheese Danishes.

x ≤ 2y

 

Merging, the two inequalities above,

3 + (2/3)y ≤ x ≤ 2y

3 + (2/3)y ≤ 2y

OR 2y ≥ 3 + (2/3)y

2y – (2/3)y ≥ 3

 

Multiply both sides by 3

(3 * 2)y – (3 * 2/3)y ≥ 3 * 3

6y – 2y ≥ 9

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y ≥ 9/4

 

Since x ≥ 3 + (2/3)y, and y ≥ 9/4

Then, x ≥ 3 + (2/3 * 9/4)

x ≥ 3 + (2/3 * 9/4)

x ≥ 3 + 3/2

x ≥ 9/2

 

Since y ≥ 9/4 and x ≥ 9/2

x + y ≥ 9/4 +9/2

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x + y represents the total number of Danishes the student brings

x + y ≥ 6.75 means that the total number of Danishes the student brings is 6.75

 

<span>BUT since the total number of Danishes must be an integer, then that the total number of Danishes the student brings is 6.</span>

3 0
3 years ago
Read 2 more answers
For Valentine's day, the florist shop sold 300 flowers. If 5 out of 12 of these were roses, many roses did the florist shop sell
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Answer:

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7/32 = 0.21875

3. Move the decimal to the right two places.

21.875

4. Round to the next whole number.

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3 years ago
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The expression 16t2 represents the distance in feet an object falls after t seconds. The
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Answer:

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