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dusya [7]
3 years ago
7

Nine grapefruits cost $4. Use the ratio table to determine how many grapefruits can be bought for $20.

Mathematics
2 answers:
Tamiku [17]3 years ago
6 0
You have to add 36 plus 9 and u get 45
zhannawk [14.2K]3 years ago
3 0

Answer:

D. 45

_________

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A school debate team has four girls and six boys. A total of four of the team members will be chosen to participate in the distr
alex41 [277]
Procedure:

1) calculate the number of diferent teams of four members that can be formed (with the ten persons)
2) calculate the number of teams tha meet the specification (two girls and two boys)
3) Divide the positive events by the total number of events: this is the result of 2) by the result in 1)

Solution

1) the number of teams of four members that can be formed are:

10*9*8*7 / (4*3*2*1) = 210

2) Number of different teams with 2 boys and 2 girls = ways of chosing 2 boys * ways of chosing 2 girls

Ways of chosing 2 boys = 6*5/2 = 15
Ways of chosing 2 girls = 4*3/2 = 6

Number of different teams with 2 boys and 2 girls = 15 * 6 = 90

3) probability of choosing one of the 90 teams formed by 2 boys and 2 girls:

90/210 = 3/7
 
7 0
3 years ago
Which of the following is a solution to 2cos x + 1 = 0? 60° 120° 210° 300°
klasskru [66]
Rewrite   <span>2cos x + 1 = 0    as:

2 cos x = -1, and then cos x = -1/2

x must be in Quadrant II or Quadrant III, since the adj. side is negative.

Note that the angle 120 has adj. side -1 and hyp 2.  So 120 degrees is one solution.  

Now what about a possible 2nd solution, to be found in Quadrant III?  That would be -120 degrees, which has the same terminal line as does 240 degrees.

No soap.

So, the solution is 120 degrees.</span>
6 0
3 years ago
Read 2 more answers
What is 9 divided by 350 original form
dlinn [17]
The answer is 38.8 repeating. Might as well just round it
4 0
3 years ago
What is the area of the composite figure?( 20 points)​
kicyunya [14]
The answer is B. 20.285
5 0
3 years ago
10, 20, 40 what is the 15th term
grin007 [14]

Answer:

560

Step-by-step explanation:

3 0
3 years ago
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