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4 years ago

What does (5 x -4) - 8=

Mathematics

1 answer:

Leto [7]4 years ago

4 0

Answer:

-28

Step-by-step explanation:

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PLEASE HELP ASAP<br> I think I know but I want to double check

Nat2105 [25]

Answer:B 1/18

Step-by-step explanation:

8 0

3 years ago

At Tech High there are three math teachers, Mary, Tom, and Alex. All students at Tech High take math, with 21% taking class with

galben [10]

Answer:

The probability that a Tech High student fails math is 0.1006

Step-by-step explanation:

21% students are taking class with Mary.

Every year 4% of Mary’s students fail,

15% students are taking class with Tom

Every year 6% of Tom’s students fail.

64% students are taking class with Alex

Every year 13% of Alex's students fail.

Now we are supposed to find the probability that a Tech High student fails math.

$P(\text{Tech High student fails math}) = P(\text{taking class with Mary})\times P(\text{Mary students fail})+P(\text{taking class with Tom}) \times P(\text{Tom students fail})+P(\text{taking class with Alex}) \times P(\text{Alex student fail})$

$P(\text{Tech High student fails math}) = 0.21 \times 0.04+0.15 \times 0.06+0.64 \times 0.13$

$P(\text{Tech High student fails math}) =0.1006$

Hence the probability that a Tech High student fails math is 0.1006

8 0

4 years ago

How to write 2/5 as a decimal

igor_vitrenko [27]

I think the answer will be 2.5

6 0

4 years ago

Read 2 more answers

In early 2007 the Mortgage Lenders Association reported that homeowners, hit hard by rising interest rates on adjustable-rate mo

bearhunter [10]

Answer:

Step-by-step explanation:

3 0

4 years ago

You are playing a new video game. The table shows the proportional relationship between the number of levels completed and the t

Lana71 [14]

The time to complete 2 levels is (c) 60 minutes

<h3>How to determine the time to complete 2 levels?</h3>

The table of values is given as

Number of Levels Time (hours)

2 ?

3 1.5

Express the blank (?) with y

Number of Levels Time (hours)

2 y

3 1.5

The ordered pairs from the table are

(x, y) = (2, y) and (3, 15)

The table shows the proportional relationship

This means that the equation can be represented as

y = Y/X * x

Where

(x, y) = (2, y)

(X, Y) = (3, 1.5)

So, we have

y = 1.5/3 * 2

Evaluate the quotient

y = 0.5 * 2

This gives

y = 1 hour

Convert to minutes

y = 60 minutes

Hence, the time is 60 minutes