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mixer [17]
3 years ago
15

Which equation models the problem below if c represents the number of babies whose eyes are closed? There are 12 babies in a pho

tograph, and 9 of them have their eyes open. How many babies have their eyes closed?
9 – c = 12
12 + c = 9
c – 9 = 12
9 + c = 12
Mathematics
1 answer:
Pavel [41]3 years ago
5 0

The correct answer is: 9 + c = 12

Further explanation:

Given

c = number of babies whose eyes are closed

So,

If the total number of babies are 12 then the sum of babies with eyes closed and eyes opened should be equal to 12.

As c is the number of babies with eyes closed and 9 is the number of babies with eyes opened then,

9+c = 12

The equation can be used to find the number of babies whose eyes are open

9+c-9 = 12 -9\\c = 3

Three babies have their eyes closed in the photograph.

Keywords: Linear equations, Word problems

Learn more about linear equations at:

  • brainly.com/question/537998
  • brainly.com/question/5563823

#LearnwithBrainly

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5) If Oskar bisects the diameter of a circle, what is he trying to construct?
pav-90 [236]

Answer:

Center = (5,-3) and radius = 7

Step-by-step explanation:

(5) If Oskar bisects the diameter of a circle, what is he trying to construct the radius of the circle.

(6) The given equation is :

(x-5)^2+(y+3)^2=49

The general equation of circle is given by :

(x-a)^2+(y-b)^2=r^2 ...(1)

Where

(a,b) are the coordinates of the centre and r is the radius.

The given equation can be written as :

(x-5)^2+(y+3)^2=7^2 ..(2)

Comparing equation (1) and (2) we get :

a = 5, b = -3 and r = 7

So,

Center = (5,-3) and radius = 7

Hence, this is the required solution.

8 0
3 years ago
A total of 428 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student t
aalyn [17]
321 adult tickets were sold use the formula to solve
108 student tickets were sold 
6 0
3 years ago
7. Write the slope-intercept form of the equation of the line graphed below.​
Stels [109]

Answer:

The answer to your question is y = \frac{-1}{2} x - 1

Step-by-step explanation:

Process

1.- Get to points of the line

    A (-2, 0)

    B (0, -1)

2.- Find the slope of the line

Slope = m = \frac{y2 - y1}{x2 - x1}

Substitution

             m = \frac{-1 - 0}{0 + 2} = \frac{-1}{2}

3.- Find the equation of the line

              y - y1 = m(x - x1)

Substitution

              y - 0 = -1/2(x + 2)

Simplification

                   y = -1/2x - 1

3 0
3 years ago
How do I prove that a quadrilateral is a rectangle? (in a Column chart with statement and reason)
klasskru [66]
By definition, we have to:

 In plane geometry, a rectangle is a parallelogram whose four sides are at right angles to each other. Opposite sides have the same length.

 There is a proof that a quadrilateral is a rectangle:

  1) Its parallel sides are the same.

 2) Its two diagonals are the same, and they bisect each other at the common midpoint

 3) Any rectangle can be inscribed in a circle, two of whose diameters coincide with the diagonals of the rectangle.

 4) If all the angles of a quadrilateral are right angles, then it is a rectangle
7 0
3 years ago
Amir has a bag of dimes and quarters. He has a total of 31 coins worth $5.20.
Step2247 [10]

Answer

B is the correct answer.

Step-by-step explanation:

This is the given information for which system of equations would be used to find out how many dimes and quarters Amir has?

x = dimes          x = 0.10 or 0.1

y = quarters      y = 0.25

31 coins

worth $5.20       = 5.2

x + y = 31

0.1x + 0.25y = 5.2

3 0
3 years ago
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