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sladkih [1.3K]
3 years ago
7

A bookstore charges $4 for all children's books. Elijah graphs the function that gives the total cost, y, in dollars to buy x nu

mber of books. Which ordered pair is a point on the graph of the function?
A) (2,8)
B) (4,12)
C) (9,18)
D) (20,5)
Mathematics
2 answers:
Molodets [167]3 years ago
4 0

Answer:

A is the right answer

Step-by-step explanation:

Citrus2011 [14]3 years ago
3 0
A is the right answer
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Naddika [18.5K]

Answer: -13/17

Step-by-step explanation:

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What is the solution to this inequality?
ioda
C. we multiply the equation by 3
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KMZ~ KDH; find z.<br> F<br> 21<br> D<br> 6x + 3<br> E 17<br> G<br> 8x-1<br> C
Drupady [299]

Answer:

x=8

Step-by-step explanation:

Triangle DCE is similar to EGF

CE/EF=DE/EG

Substitute

(8x-1)/21=(6x+3)/17

Cross multiply

(8x−1)*(17)=(6x+3)*(21)

136x−17=126x+63

Subtract 126x from both sides

10x−17=63

Add 17 to both sides.

10x−17+17=63+17

10x=80

Divide both sides by 10.

x=8

6 0
3 years ago
What is the y intercept of the line 2x + 3y - 9 = 0
Sindrei [870]
\hbox{y-intercept: } x=0 \\&#10;2 \times 0+3 y -9=0 \\&#10;3y-9=0 \\&#10;3y=9 \\&#10;y=\frac{9}{3} \\&#10;\boxed{y=3}
4 0
3 years ago
Solve the problem please
Molodets [167]

Answer:

x = 9±sqrt(7)

Step-by-step explanation:

3(x-9)^2 =21

Divide each side by 3

3/3(x-9)^2 =21/3

(x-9)^2 =7

Take the square root of each side

sqrt((x-9)^2) =±sqrt(7)

x-9 =±sqrt(7)

Add 9 to each side

x = 9±sqrt(7)

4 0
2 years ago
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