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harkovskaia [24]
3 years ago
15

A test has multiple choice questions with 5 choices for each answer; only one answer is correct for each question. Suppose a stu

dent guesses the answer to each question. Assuming the guesses are independent, find the probability that the student will guess correctly when answering two questions. 1/5 1/10 1/25
Mathematics
2 answers:
mariarad [96]3 years ago
6 0
1 out of 5.

2/10=1/5 simplified
barxatty [35]3 years ago
3 0
1 / 5 is the correct answer since if your answering 2 questions there is a 2/10 probability 1/5
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GEOMETRY HELP ASAP I'M FAILING. I did the first half now i cant figure this out!!?
Shalnov [3]
OK, so;
BDE and BED are congruent because the opposite sides are both congruent
To find BDE and BED you must subtract 66 degrees from 180 degrees.
You are then left with 114 as the sum of both the angles you need to find
Since they are congruent, all you need to do is divide by two
114/2=57 degrees for both BDE (a) and BED(b)
Now for angle A and C;
This is easy because they are both congruent to the first two!
So basically, all of question four is "57 degrees"
 Sadly for number 5 i did not understand the question :"(
For 6 tho;
AC is parallel to DE because angle C is congruent to angle BED 
All the others can be ruled out 
For 7;
BD is half the length of AE, so:
 4x+20=2(3x+5)
4x+20=6x+10
20=2x+10
10=2x
x=5
 This means BD is 20 bc
3(5)+5
15+5
20
 And AE is 40 bc
20X2=40
or...
4(5)+20



5 0
3 years ago
the area of a square floor on a scale drawing is 100 square centimeters, and the scale of the drawing is 1 cm: 2 ft. what is the
kondaur [170]
The square root of 100 is 10. The drawing must be 10 cm by 10 cm.

1 cm = 2 ft, so 10 cm must equal 20 feet.

20 * 20 = 400 square feet :)
3 0
3 years ago
Please help asap!!!!
Sergeu [11.5K]
(1,35)(2,60)(3,92)(4,120)(5,175)
7 0
3 years ago
-2j < -14
Novay_Z [31]

Step-by-step explanation:

-2j < -14

Divide both sides by -2:

j > 7. (D)

7 0
3 years ago
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Which of the following expressions is correctly written in scientific notation
katrin [286]

Answer:

it is the 3 one

Step-by-step explanation:

7 0
3 years ago
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