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adell [148]
3 years ago
12

Quanto é três x ao quadrado menos sete x mais dois e igual a zero ?

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
3 0
3x² - 7 x 2 ? É isso ? 
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Solve.<br> 2a + 3b = 5<br> b=a5<br> a = 4<br> b = -1<br> a = 4<br> b=1
nikklg [1K]

Answer:

5 = 5    True

1 = 20   False

Step-by-step explanation:

5 0
3 years ago
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180 students in a tenth grade high school class take a survey about which video game consoles they own.
Fantom [35]

Answer:

P(A) = 44.44%

P(B) = 50%

P(B|A) = 37.5%

P(B|A) different from P(B).

A and B are independent.

Step-by-step explanation:

If we have a total of 180 students, and 80 of them have a Playstation, we have that P(A) = 80/180 = 0.4444 = 44.44%

If we have 90 students that have a Xbox, we have that P(B) = 90/180 = 0.5 = 50%

If we have 30 students that have both consoles, we have that P(A and B) = 30/180 = 0.1667 = 16.67%

To find P(B|A), we will find for a student that has an Xbox inside the group of students that has a Playstation, that is, we have 30 students in a total of 80 students, so P(B|A) = 30/80 = 0.375 = 37.5%

P(B|A) is different from P(B), the first is 37.5% and the second is 50%, so events A and B are independent events.

5 0
2 years ago
The millers house is 25 yards from mrs shapiro’s Haus how many feet apart are the two houses
maw [93]

Answer: 75 feet


3 Feet = 1 Yard


5 0
3 years ago
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In △ABC, point D∈ AB with AD:DB=5:3, point E∈ BC so that BE:EC=1:4. If AABC=40 in2, find AADC, ABDC, and ACDE.
DIA [1.3K]

Answer: Using the proportions between the segments, the area of the triangles are:

1. Area of triangle ADC is 25 in^2.

2. Area of triangle BDC is 15 in^2.

3. Area of triangle CDE is 12 in^2.


Please, see the attached files.

Thanks.

8 0
3 years ago
Which of the following is equal to 2?
bekas [8.4K]
I think the answer is B
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3 years ago
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