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Ahat [919]
3 years ago
15

2x ( 4x - 5) (22 – 81) = 0

Mathematics
1 answer:
shepuryov [24]3 years ago
6 0

Answer:

0.500

Step-by-step explanation:

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4x+4y=15. missing coordinate in the ordered pair (−5,?)
Black_prince [1.1K]

I domt get what you mean by coordinate pair could you explain plseas

6 0
3 years ago
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
What’s the length of the hypotenuse?
denis23 [38]

a² + b² = c²

9² + 12² = c²

81 + 144 = c²

225 = c²

15² = c²

15 = c

7 0
3 years ago
While flying against the wind, the plane covered 1800 km in 2 hours and 40 minutes. On the return flight it spent 16 minutes les
zavuch27 [327]

Answer:

you should just use an online caculatur

Step-by-step explanation:

3 0
3 years ago
If 1.3 grams of air has a volume of 1000 cm³, what is the density of air
Bumek [7]

Answer:

Density is equal to mass/volume, so in your case:

density=1.3/1000=0.0013 g/cm^3

Step-by-step explanation:


8 0
3 years ago
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