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Veronika [31]
3 years ago
15

Of the last three chapters tests given in a computer programming class, 11 students passed all three tests , 9 students passed t

wo tests, and 2 students passed one test. If a single student is picked at random what is the probability that the student passed all three tests or passed one test ? Provide the final answer as a fraction
Mathematics
1 answer:
mote1985 [20]3 years ago
5 0

Answer:

59%

Step-by-step explanation:

simply, it would be 11+2/22 = 59%

I assume there are no student that passed 0 tests

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5(1+4K)+7k=4(7k+2)<br> Help
stepladder [879]

Answer:

k = -3

Step-by-step explanation:

1) Simplify

5+20k+7k=28k+8

2) Combine the k's

5+27k=28k+8

3) Subtract 27k on both sides

5=k+8

4) Subtract 8 on both sides

-3=k or k= -3

5 0
2 years ago
Can someone help me in this plssss I really need it
kompoz [17]

Answer:

\boxed{-3xy^{2}\sqrt [3] {2x^{2}}}

Step-by-step explanation:

Your expression is

\sqrt [3] {-54x^{5}y^{6}}

Here's how I would simplify it.

\begin{array}{rcll}\sqrt [3] {-54x^{5}y^{6}} & = & \sqrt [3] {(-1)^{3}\times 2 \times 27 \times x^{2} \times x^{3} \times y^{6}} & \text{Factored the cubes}\\& = & \sqrt [3] {(-1)^{3} \times 3^{3}\times x^{3} \times y^{6}\times 2 \times x^{2}} & \text{Grouped the cubes}\\\end{array}

\begin{array}{rcll}& = & \sqrt [3] {(-1)^{3} \times {3^{3}\times x^{3} \times y^{6}}} \times\sqrt [3] { 2 \times x^{2}} & \text{Separated the cubes}\\&=& \mathbf{-3xy^{2}\sqrt [3] {2x^{2}}} & \text{Took cube roots}\\\end{array}

\text{The simplified expression is $\boxed{\mathbf{-3xy^{2}\sqrt [3] {2x^{2}}}}$}

6 0
3 years ago
A hiker travels 12 km in 3 h.
FinnZ [79.3K]
This is a ratio. 
12 km : 3 h 

simplify to-
4km : 1 h 

which means the hiker traveled 4 km per 1 hour. 
6 0
3 years ago
Plsss help i’ll give brainly...but pls give a correct answer
algol [13]

Answer:

3

Step-by-step explanation:

Terms are separated by symbols for operations (like plus, minus, multiply, divide.)

So your terms would be

8y

+z

-6

4 0
3 years ago
Read 2 more answers
Find the power of 1.4 times 3??
Akimi4 [234]

Answer: 1.4 x 3 = 4.2

Step-by-step explanation:

1 x 3 = 3

.4 x 3 = 1.2

3 + 1.2 = 4.2

8 0
3 years ago
Read 2 more answers
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