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Paul [167]
4 years ago
12

If i had a question like: If y = 2x-3 find the value of y when x= 2

Mathematics
1 answer:
meriva4 years ago
3 0
That's is depend from the author of the equation. But most time there is need to multiply value X into constant before.
In other words it look likes
y=2*x-3
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emily has saved 75.25 so far for a new phone. the cell phone that she want costs 102.19 How much more money does she need to pur
Alenkinab [10]

Answer:

emily has saved 75.25 so far for a new phone. the cell phone that she want costs 102.19

How much more money does she need to purchase a phone?

The Correct Answer Is $ 26.94

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6 0
2 years ago
The table shows the results of an experiment in which subjects taking either a drug or a placebo either reported fatigue or did
Lady bird [3.3K]

Answer:

Therefore, the correct options are;

-P(fatigue) = 0.44

P(fatigue \left |  \right drug) = 0.533

--P(drug and fatigue) = 0.32

P(drug)·P(fatigue) = 0.264

Step-by-step explanation:

Here we have that for dependent events,

P(A \, and \, B)= P(A)\times  P(B\left |  \right A )

From the options, we have;

P(fatigue \left |  \right drug) = 0.533

P(drug) = 0.6

P(drug and fatigue) = 0.32

Therefore

P(drug and fatigue) = P(drug)×P(fatigue \left |  \right drug)  

= 0.6 × 0.533 = 0.3198 ≈ 0.32 = P(drug and fatigue)

Therefore, the correct options are;

-P(fatigue) = 0.44

P(fatigue \left |  \right drug) = 0.533

--P(drug and fatigue) = 0.32

P(drug)·P(fatigue) = 0.264

Since P(fatigue) = 0.44 ∴ P(drug) = 0.264/0.44 = 0.6.

4 0
3 years ago
What is the purpose of scientific notation? How is scientific notation represented? Explain.
Anit [1.1K]

Answer:

Step-by-step explanation: The purpose of scientific notation is to make the numbers and quantities used easier to comprehend, to read and to write.

Express both numbers with the same power of ten.

Add the base numbers.

Bring the power of ten down to represent the new power of ten for the sum.

Simplify so that the base number is between 1 and 10.

5 0
3 years ago
Read 2 more answers
Do decimals have opposites? explain
dybincka [34]
<span>Presumably, the opposite of decimals are fractions because by dividing the two numbers you get the decimal value of the fractional form of the number. Refer to the example below.

How do you write 39/100 into a decimal form is by simply dividing 39 to 100. </span>
<span>Hence, </span>
1. 39 / 100 = 0.39 -> Hence this is the decimal form.

<span>0.39 is the decimal form of the given value. </span>
<span>Other examples can include: </span>
<span><span>1. </span> 100 / 1000 = 0.1</span> <span><span>
2. </span> 45 / 10 = 4.5</span><span>
</span>
4 0
3 years ago
Megan decided to run in a 10-km race. Her time of 82 minutes was twice as long a the winner's time. What was the winner's time?
erik [133]
The answer is 41 because half of 82 is 41
8 0
3 years ago
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