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4 years ago

Solve and show solving steps 12x3-42+20

Mathematics

2 answers:

Rudiy274 years ago

5 0

12x3= 36
36-42= -6+20 = 14
your answer is 14

stealth61 [152]4 years ago

3 0

Answer: 56

Step-by-step explanation: pemdas

12×3 =36

36+20=56

56-42= 14

answer is: 14

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A house is sold for 234000 which gives a profit of 12% find the actual profit

andrew11 [14]

$234,000 x (percent of profit out of 1) 0.12 = $28,080.

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3 years ago

So whats the slope and how do i solve?

Svetllana [295]

Answer: Y= -2 1/2x+2

Step-by-step explanation:

Alright, first of put your finger on the Y axis. (The line that has a Y above it)

We are starting on the number two...which is "B"...this will be our addition to our solved "rise & run" equation!

Now, we are going to "rise" down to the other dot mention.

There are a total of 5 hops that we had to do in order to get to the other dot.

These hops down are called the "rise". However, we did not rise, we went down. This means that the hops we did are negative...because we went down. If the other dot mentioned went up, it would've be positive.

Okay, so now we have one part of our equation down:

rise= -5

Now we need to "run" to the dot. We will run two spaces to the dot mentioned.

So, our run is a positive 2

run= 2

So now we have our equation...which is slope:

-5/2

Simplify...

-2 1/2

Now that we have simplified, we will set our linear equation up, starting with Y.

Y= -2 1/2x+2

Why did we add the number 2 to our equation, you may ask? Remember when we had to start on the first dot which was the number 2? And we had to call it "B"? Well "B" has to always be added to a linear equation...which is what we just solved for.

What does "+2" mean? "+2" means y-intercept.

What does our number -2 1/2 mean? -2 1/2 means the rate of change.

What does the x attached to -2 1/2 mean? X means any random number that can equal "Y" with all the rest of our numbers.

Hoped this helped! Remember, the answer is Y= -2 1/2x+2

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3 years ago

An initial deposit of $35,000 into a bank gains simple interest of 6% per year. Find a formula that will describe the amount of

Dennis_Churaev [7]

Answer:

Step-by-step explanation:

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8 0

3 years ago

Which expression represents the expanded version of the expression below? <br><br> 4x(3x+7)

emmasim [6.3K]

Umm i would say 12x^2 + 28x

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3 years ago

Read 2 more answers

A production manager at a wall clock company wants to test their new wall clocks. The designer claims they have a mean life of 1

Harman [31]

The probability that the mean clock life would differ from the population mean by greater than 12.5 years is 98.30%.

Given mean of 14 years, variance of 25 and sample size is 50.

We have to calculate the probability that the mean clock life would differ from the population mean by greater than 1.5 years.

μ=14,

σ= $\sqrt{25}$ =5

n=50

s orσ =5/ $\sqrt{50}$ =0.7071.

This is 1 subtracted by the p value of z when X=12.5.

So,

z=X-μ/σ

=12.5-14/0.7071

=-2.12

P value=0.0170

1-0.0170=0.9830

=98.30%

Hence the probability that the mean clock life would differ from the population mean by greater than 1.5 years is 98.30%.

Learn more about probability at brainly.com/question/24756209

#SPJ4

There is a mistake in question and correct question is as under:

What is the probability that the mean clock life would differ from the population mean by greater than 12.5 years?

5 0

2 years ago