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zimovet [89]
4 years ago
15

Luis and Roberto are donating some of their baseball cards to the library. Luis started with 50 cards and gave away X number of

them. Roberto started with 80 cards and gave away 3 times as many as Luis had given away. If they both now have the same number of baseball cards, how many baseball cards did Roberto give away?
A - 15
B - 35
C - 45
D - 65
Mathematics
2 answers:
LUCKY_DIMON [66]4 years ago
5 0

Answer:

50-x = 80-3x

50 = 80-2x

-30 = -2x

x = 15

3x = 45

The answer is C

pav-90 [236]4 years ago
4 0

Answer:

the answer is c -45

explanation

calculator and a brain

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4 and 5 please 20 points
DochEvi [55]

4. about 23.13

5. (x/5)-4

4 0
3 years ago
A team of 5people to be selected from 7women & 6men. Find the number of different teams that could be selected if there must
vova2212 [387]

Answer:

1246 teams

Step-by-step explanation:

We are told there are 7women & 6men.

If 5 people are selected and there must be more women than men in the team.

This means there must be a minimum of 3 women.

Thus;

For 3 women;

7C3 × 6C2 = 525

For 4 women;

7C4 × 6C3 = 700

For 5 women;

7C5 × 6C0 = 21

Thus;

Total = 525 + 700 + 21 = 1246 teams

8 0
3 years ago
What is the volume of a rectangular prism with a length
lana [24]

The volume of the rectangular prism is 1 inch^{3}, If the rectangular prism have a length  of 2 inches, a width of 1 inch, and a height of 1/2 inch.

Step-by-step explanation:

          The given is,

               Let, l - Length of the rectangular prism

                     w - Width of the rectangular prism

                     h - Height of the rectangular prism

Step:1

        From the given,

                    l - 2 inches

                   w - 1 inch

                   h -  \frac{1}{2} inch

Step:2

       Formula for the volume of a rectangular prism is,

                 V = w h l

      Substitute the values of the w, h and l

                     = ( 1 × \frac{1}{2} × 2 )

                     = 1

                V = 1 inch^{3}

Result:

        Thus the volume of the rectangular prism is 1 inch^{3}, for the given  rectangular prism have a length  of 2 inches, a width of 1 inch, and a height of 1/2 inch.

7 0
4 years ago
Read 2 more answers
What is 76 divides by 8
saw5 [17]
The answer is 9.5 to ur question
8 0
3 years ago
The energy magnitude M of an earthquake can be modeled by the equation
const2013 [10]

Answer: magnitude of an earthquake with an energy release of 7.079 X 10^26 =8

Step-by-step explanation:

Given that the magnitude M of an earthquake can be expressed by the equation

M=(2/3)log E - 9.9

Given that Energy release , E=7.079 X 10^26

Magnotude , M=(2/3)log E - 9.9

=2/3 log7.079 X 10^26 -9.9

2/3 x 2.8499719  -9.9

17.8999813 -9.9

=7.9999

rounded to 8 magnitude

6 0
3 years ago
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