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ruslelena [56]
2 years ago
14

If 12 keychains cost $9 then how much does 20 keychains cost? $________ Also if you could may you provide steps on how you got t

he answer​

Mathematics
2 answers:
AleksandrR [38]2 years ago
5 0

Answer:

Step-by-step explanation:

12k=9

12k*5/3=9*5/3

20k=15

Jlenok [28]2 years ago
5 0

Answer:

20 keychains will be $15

Step-by-step explanation:

i did 9 divided by 12 equals 0.75 so thats how much each keychain costs. 0.75x20=15

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3 years ago
I need help asap please ?!
pychu [463]

Answer:

B

Step-by-step explanation:

m+4\leq6

We subtract 4 from each side to get m\leq2

Let's plug in a random point such as 0.

0+4\leq6 \\ \\ 4\leq6

Since this is true, the inequality we made is true.

5 0
3 years ago
quadrilateral paid is a rectangle whose diagonals have the endpoints p(-3, -2)i(4, -7) and a(4, -2)d(-3, -7). find the diagonals
julia-pushkina [17]

Answer:

The intersection point of diagonals is (0.5,-4.5).

Step-by-step explanation:

The end points of first diagonal are p(-3, -2) and i(4, -7).

The end points of second diagonal are a(4, -2) and d(-3, -7).

If a line passing through two points, then the equation of line is

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

The equation of first diagonal is

y-(-2)=\frac{-7-(-2)}{4-(-3)}(x-(-3))

y+2=\frac{-5}{7}(x+3)

7y+14=-5(x+3)

7y+14=-5x-15

5x+7y=-29                         .... (1)

The equation of second diagonal is

y-(-2)=\frac{-7-(-2)}{-3-4}(x-4)

y+2=\frac{-5}{-7}(x-4)

7y+14=5(x-4)

7y+14=5x-20

5x-7y=34                         .... (2)

Add equation (1) and (2),

10x=5

x=0.5

Put this value in (1).

5(0.5)+7y=-29

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The intersection point of diagonals is (0.5,-4.5).

3 0
3 years ago
I need help in my math homework
Anastaziya [24]
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4 0
3 years ago
A quadrilateral-shaped land property is drawn on a coordinate grid. Two adjacent sides of the property lie along the lines y = 4
Liono4ka [1.6K]

Answer:

P(-4,-8)

Step-by-step explanation:

Given two lines:

y = 4x + 8;$ and $ \\y = -0.25x - 9

To determine the point of intersection P of the lines, we equate the two lines and solve for (x,y).

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Therefore, the intersection point P of the lines is: P(-4,-8)

6 0
3 years ago
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