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gregori [183]
3 years ago
11

a multiple choice test has five questions, each with five choices for the answer.only one of the choices is correct. you randoml

y guess the answer to each question. what is the probability that you answer all five questions correctly
Mathematics
1 answer:
Rashid [163]3 years ago
3 0
1/5 because there are five options and there is only one answer correct so there is only one out of five chance so if that is not an option go with 1/3
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What is the value of x?
SSSSS [86.1K]
All angles in a triangle add up to 180

180 = 9 + 15 + 2x - 1 + 3x

180 = 24 - 1 + 2x + 3x

180 = 23 + 5x

180 - 23 = 5x

157 = 5x

Divide both sides by 5

X = 31.4 or 157/5
3 0
3 years ago
Solve the system by the elimination method.
REY [17]

Answer: C is correct, 4x=8

Step-by-step explanation:

You will add the two equations...

4x-8=0

Now you need to move the -8 over, which reverses its sign to positive.

4x=8

8 0
2 years ago
It’s math I suck at it please help
nevsk [136]

Answer:

24 over 10

Step-by-step explanation:

I did it in my head

7 0
3 years ago
Read 2 more answers
a submarine travels at an elevation of -75 3/4 ft relative to sea level then its elevation changes by - 16 3/8 what is the new e
slamgirl [31]

Answer:

New = -92\frac{1}{8}

Step-by-step explanation:

Given:

x = -75\frac{3}{4} --- Position

\triangle x = -16\frac{3}{8} --- Change

Required

Find the new position

The new position is calculated as:

New = x + \triangle x

New = -75\frac{3}{4} - 16\frac{3}{8}

New = -75.75 - 16.375

New = -92.125

New = -92\frac{125}{1000}

New = -92\frac{1}{8}

3 0
2 years ago
A plane travels 264 miles in 1.1 hours against the wind. On the return trip, it travels the same 264 miles in 1
bagirrra123 [75]

Answer:

The speed of the wind is 12 miles per hour.

Step-by-step explanation:

Given that the plane travels 264 miles in 1.1 hours with a headwind, the following calculation must be performed to determine its speed:

264 / 1.1 = X

240 = X

Thus, the speed of the plane into the headwind was 240 miles per hour. Now, on the return, with the wind in favor, the route is completed in exactly 1 hour.

Therefore the wind exerts a difference of 24 miles per hour between one trip and another, with which, if it remains stable, its speed is 12 miles per hour (24 / 2).

5 0
2 years ago
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