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zhannawk [14.2K]
2 years ago
9

The price of a 9-minute phone call is $2.25. What is the price of a 19-minute phone call?

Mathematics
1 answer:
defon2 years ago
4 0

Answer:

$4.75

Step-by-step explanation:

9/2.25=19/x

cross product

2.25*19=9*x

42.75=9x

x=42.75/9

x=4.75

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Solve by elimination: 3y-4x=29<br> 2y+5=4
Vaselesa [24]

The solution is x = -61/8 and y = -1/2.

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

The given equations are -4x + 3y = 29 and 2y + 5 = 4

   <u>Step 1</u> : There is no x term in the second equation.

   <u>Step 2</u> : Solve for y, 2y = 4 -5

                                      y = -1/2

   <u>Step 3</u> : Substitute y = -1/2 in first equation and solve for x.

   <u>Step 4</u> : -4x + 3(-1/2) = 29

                 -4x -(3/2) = 29

                 -8x -3 = 29\times2

                 -8x = 58 + 3

                  x = -61/8

5 0
3 years ago
Help plz:))) I’ll mark u brainliest
kompoz [17]

Answer:

x=4

Step-by-step explanation:

checked my answer its right

5 0
3 years ago
HELP URGENT!! Is the following relation a function?
zaharov [31]

Answer:

No.

Step-by-step explanation:

It does not pass the vertical line test, so the relation is not a function. This is because there are x-values that have several y-values. To be a function, a relation must have x-values that only have one y-value each.

Hope this helps!

4 0
3 years ago
Read 2 more answers
NEED ANSWER ASAP!!!!!
Vika [28.1K]

Answer:

9 cm

hope fully I help you

8 0
3 years ago
Can anyone please help me with these
DochEvi [55]

Answer: Natural/Counting = 1, 0, 6, 3,

Whole = 1234, 135

Integers = -42,260, -97

Rational = 0.5432, 14.4, 6.2, 6.5892,

-14.4, 7.7777777, -13.574,

3.14, 0.4, 6.2, 0.4, 0.34,

12/6, -8/4, -10/5, -3/4, -3/8,

3/7, -4/8, 6/2, -8/4

Irrational = √34, -√34, -√ 36, 2π, √81,

√300, √1, π.

;Hope this Helped with both Pages:)

4 0
3 years ago
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