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yKpoI14uk [10]
3 years ago
14

Yolanda purchased a prepaid phone card for $25 . long distance calls cost 17 cents a minute using this card. yolanda used her ca

rd only once to make a long distance call. if the remaining credit on her card is $17.35 , how many minutes did her call last?
Mathematics
1 answer:
USPshnik [31]3 years ago
4 0
So $25 - $17.35 = $7.65

7.65÷ 17 = 45
45 = 45 min
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Thirteen less than eight times a number is three more than four times the number.
Lisa [10]

Answer:

Step-by-step explanation:

Let the number = x

8x - 13 = 4x + 3              Add 13

8x = 4x + 3 + 13             Combine

8x = 4x + 16                   Subtract 4x

8x - 4x = 16                    Combine

4x = 16                           Divide by 4

x = 16/4

x = 4

6 0
3 years ago
What is the solution of the system? Use elimination.
Anit [1.1K]
Note that if we add each side of the 2 equations, y will cancel out:

-12x-y+(17x+y)=6+4

5x=10

x=2


Substituting x=2 in either of the equations, we find the value of y.

Let's use the first equation:

-12x-y=6

-24-y=6

-y=24+6

-y=30, so y=-30.

Thus, the solution is (2, -30)

Answer: C
6 0
3 years ago
Students are making ornaments and each takes 1/4 of a piece of Bristol board. They go to the cupboard and find 2 1/2 pieces of B
coldgirl [10]

Answer: 10 ornaments

Step-by-step explanation:

From the question, we are informed that students are making ornaments and each takes 1/4 of a piece of Bristol board. We are further told that they go to the cupboard and find 2 1/2 pieces of Bristol board.

The number of ornaments that they make will be gotten by dividing 2 1/2 by 1/4. This will be:

= 2 1/2 ÷ 1/4

= 5/2 ÷ 1/4

= 5/2 × 4/1

= 10

They can make 10 ornaments

5 0
2 years ago
For what value of x is the rational expression below equal to zero 20+2x/5-x
Yuliya22 [10]
\frac{20+2x}{5-x}=0;\ \ \ \ D:x\neq5\\\\\frac{20+2x}{5-x}=0\iff20+2x=0\\\\2x=-20\ \ \ \ /:2\\\\x=-10\in D
4 0
3 years ago
Please help. If you don't know the answer please don't respond. It's not funny and it doesn't help.
never [62]
If you have any other questions like this then you can use something on google called "desmos" and you type in the equation or expression and itll graph and give you all the solutions ❤️
5 0
3 years ago
Read 2 more answers
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