At the beginning, the chances that the teacher will choose a student who has forgotten his lunch are 2/10, or 1/5.
If the teacher now chooses another student from the remaining 9 students, the chances of his choosing a student who has forgotten his lunch are 1/9, since one of the forgetful students has already been removed from the original group of 10 students, and there are only 9 in the group remaining.
The probability that both students forgot lunch is (1/5)(1/9), or 1/45.
13/15
Common denominator is 15, 1 3/15 minus 5/15 equals 13/15
Answer:
Step-by-step explanation:
first step: 0.5 * x
second step: 3* (0.5x) = 1.5x
third step: (1.5x)^2
fourth step: (1.5x)^2 + 1 = 50
(1.5x)^2 + 1 = 50 Subtract 1 from both sides
(1.5x)^2 = 49 Take the square root of both sides
1.5x = sqrt(49)
1.5x = +/- 7
1.5x = +7
x = 7/1.5
x = 4.67
1.5x = - 7
x = - 7 / 1.5
x = - 4.67
Answer:
Step-by-step explanation:
My opinion is that you meant "f(x) = c." This would be a constant function whose graph is a horizontal line, y = c.
If this graph were translated 6 units to the right, the function would not change.
However, if this function f(x) = c were translated 2 units up, the new function would be g(x) = c + 2.
Yes, 2.8 cm, 4.0 cm, and 2.8 cm could be the side lengths of a triangle ⇒ B
Step-by-step explanation:
In any triangle:
- The sum of any two sides is greater than the third side
- Add the smallest two numbers if their sum is greater than the largest number, then the numbers can formed the lengths of sides of a triangle
∵ The lengths of the segments are 2.8 cm , 4.0 cm and 2.8 cm
∵ The smallest segments are 2.8 cm , 2.8 cm
- Find their sum
∴ The sum of their length = 2.8 + 2.8
∴ The sum of their length = 5.6 cm
The length of the largest segment is 4.0 cm
∵ 5.6 cm > 4 cm
∴ 2.8 cm , 4.0 cm , 2.8 cm can formed a triangle
Yes, 2.8 cm, 4.0 cm, and 2.8 cm could be the side lengths of a triangle
Learn more:
You can learn more about the triangles in brainly.com/question/10677255
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