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motikmotik
3 years ago
6

Is the relation shown in the table a function? X/ 1,4,5,10 y/2,-1,-6,-11

Mathematics
2 answers:
shepuryov [24]3 years ago
6 0
No it’s not a function
solmaris [256]3 years ago
3 0
No it is not a function
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14. Team 8A is selling snacks at the football game to raise money for a field trip. They are selling popcorn for $2.50 and pretz
Mamont248 [21]

Answer:

  • 40 popcorns and 90 pretzels sold.

============

Let the number of popcorns is x and pretzels is y.

Set up equations:

  • x + y = 130
  • 2.5x + 2y = 280

Solve by elimination, multiply the first equation by 2 and subtract from the second equation:

  • 2.5x + 2y - 2x - 2y = 280 - 2*130
  • 0.5x = 280 - 260
  • 0.5x = 20
  • x = 20/0.5
  • x = 40

Find y:

  • 40 + y = 130
  • y = 130 - 40
  • y = 90

5 0
2 years ago
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A rectangle has a length two times the width. Describe how you would find the
IRINA_888 [86]

Answer:

perimeter = 6w

area = 2w^2

Step-by-step explanation:

we can use the variable w for width, and 2w for length perimeter would be width + width + length + length, or 6w

area is width x length or 2w^2

4 0
3 years ago
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Evaluate cos^2 θ for cosθ = sq3/2<br> A.) 3/4 <br> B.) 1 <br> C.) 1 1/2 <br> D.) sq3
Natali5045456 [20]
Try A? I’m not 100% sure but I got A
4 0
3 years ago
David keeps a range of stationery in his study. one could find pencils, erasers and pens in his study.5/7 of his stationery cons
tiny-mole [99]

The total units of stationery he has would be 55 approximately.

<h3>What is a system of equations?</h3>

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

David keeps a range of stationery in his study.

Let the pencil is represented by x.

Let the erasers be represented by y.

Let the pens be represented by z.

Let n be the stationery.

5/7 of his stationery consists of pencils.

x = 5/7 n

1/6 of the remaining stationery consists of erasers.

y = 1/6 n

There are 20 pens in his study.

z = 20

The total stationery

X + y + z

5/7 n + 1/6 n + 20 = n

20 = n -23/ 36 n

20 = 13 / 36 n

n = 55.38

Therefore, the total units of stationery he has would be 55 approximately.

Learn more about equations here;

brainly.com/question/10413253

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6 0
2 years ago
A circle with area 9 pie has a sector with a central angle of 17/9 pie radians .
zmey [24]

Answer:  8.5π

<u>Step-by-step explanation:</u>

If I understand the question correctly, the entire circle has an Area of 9π and you are looking for the Area of the shaded region which has a central angle of \dfrac{17}{9}\pi

the section of the circle that is shaded is \dfrac{\dfrac{17}{9}\pi}{2\pi}=\dfrac{17\pi}{18\pi}=\dfrac{17}{18}

Area of the shaded region is: 9\pi \cdot \dfrac{17}{18}=\dfrac{17}{2}\pi=8.5\pi

5 0
4 years ago
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