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Norma-Jean [14]
1 year ago
13

Lincoln and Hunter work at a dry cleaners ironing shirts. Lincoln can iron 30 shirts per hour, and Hunter can iron 20 shirts per

hour. Lincoln and Hunter worked a combined 15 hours and ironed 350 shirts. Determine the number of hours Lincoln worked and the number of hours Hunter worked.
Mathematics
1 answer:
Vinvika [58]1 year ago
5 0

Answer: Lincoln worked for 5 hours and Hunter worked for 10 hours.

Step-by-step explanation:

Let x represent the number of hours that Lincoln worked.

Let y represent the number of hours that Hunter worked.

Lincoln can iron 30 shirts per hour, and Hunter can iron 20 shirts per hour. They were able to iron 350 shirts in total. This means that

30x + 20y = 350 - - - - - - - - - - - 1

Lincoln and Hunter worked a combined 15 hours

This means that

x + y = 15

Substituting x = 15 - y into equation 1, it becomes

30(15 - y) + 20y = 350

450 - 30y + 20y = 350

- 30y + 20y = 350 - 450

- 10y = - 100

y = - 100/ - 10

y = 10

x = 15 - y = 15 - 10

x = 5

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Alisiya [41]
The input value is the number of times you fold it. The input value is also known as the x-value. 
The output value is its thickness. The output value is the y-value.

When you don't fold it all, the thickness will remain the same, which is 2. The ordered pair would be (0, 2).

When you fold it once, the thickness will double from 2 to 4. The ordered pair would be (1,4).

When you fold it a second time, the thickness will double from 4 to 8. The ordered pair would be (2,8).

Fold it one more time, and the thickness will be 16. The ordered pair is (3,16)

Fold it the fourth time, and the thickness doubles. 16 x 2 = 32 The ordered pair is (4, 32)

Fold it the fifth time, and the thickness goes from 32 to 64. The ordered pair is (5,64)

The ordered pairs would be:
(0,2)
(1,4)
(2,8)
(3,16)
(4,32)
(5,64)
(6,128)
(7,256)
and so on :P

The question asks for 6 ordered pairs, so I bolded the first six.

Now, the equation for this would be y = 2^{(x+1)}

If we graph that, and we do the vertical line test, then we know this is a function.

It is a function because each x-value has a different y-value. There are no y-values that have the same x-values.

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6 0
2 years ago
Which set of angles can form a triangle
Aleksandr [31]

Answer:

  2 acute and 1 right

Step-by-step explanation:

The sum of angles of a triangle is always 180°.

Right angles are 90°, and obtuse angles are more than 90°. If each of the angles in the triangle is more than 0°, there obviously cannot be two angles that measure 90° or more. Just the sum of those two would be 180° or more, and that sum doesn't include the third angle.

So, any triangle can have at most one angle that is 90° or more (right or obtuse). The remaining two angles must be acute for the sum of angles to be 180°.

  2 acute and 1 right angle can form a triangle

7 0
2 years ago
What is the value of the expression when n = 3?<br> - 2n(5 + n-8-3n)
lys-0071 [83]
  • Answer:

<em>54</em>

  • Step-by-step explanation:

<em>- 2n(5 + n - 8 - 3n) =</em>

<em>replace n = 3</em>

<em>- 2(3)(5 + 3 - 8 - 3×3)</em>

<em>= - 6(8 - 8 - 9)</em>

<em>= - 6(0 - 9)</em>

<em>= - 6 × - 9</em>

<em>= 54</em>

<em>(-)(-) = +</em>

5 0
1 year ago
What is the y intercept of the line y-14=6(x-2.5)
Ivanshal [37]

Answer:

The y intercept is -1

Step-by-step explanation:

y-14=6(x-2.5)

We need to get the equation in the form y = mx+b where b is the y intercept

Distribut the 6

y-14 = 6x -15

Add 14 to each side

y-14+14 = 6x-15+14

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3 0
2 years ago
Read 2 more answers
Reggie wrote a total of 48 political articles for the town newspaper this year. The number of political articles he wrote is 3 l
soldier1979 [14.2K]

Option B

48 = 2s - 3 shows an equality between number of political articles that Reggie wrote this year

<h3><u>Solution:</u></h3>

Given that, Reggie wrote a total of 48 political articles for the town newspaper this year

Number of political articles = 48

Let s represent the number of sports articles he wrote

The number of political articles he wrote is 3 less than twice the number of sports articles he wrote

Number of political articles = twice the number of sports articles - 3

Number of political articles = (2 x number of sports articles) - 3

Number of political articles = 2s - 3

We know that, number of political articles = 48

48 = 2s - 3

Thus above equation shows an equality between number of political articles that Reggie wrote this year

6 0
2 years ago
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