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4 years ago

How would i solve this x+2/x+7=3/6

Mathematics

1 answer:

Ksivusya [100]4 years ago

7 0

(x + 2)/(x + 7) = 3/6
6(x + 2) = 3(x + 7)
6x + 12 = 3x + 21
6x - 3x = 21 - 12
3x = 9
x = 9/3 = 3

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Midland Electronics is advertising that everything in their store is 10% off. If p represents the original price of an item in t

myrzilka [38]

Answer:

.9 times P will also get you the sale price

Step-by-step explanation:

p - 0.1p = sale price

0.9 times p = sale price

The second equation is using the percentage you have to pay or 100 - 10 = 90%.

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3 years ago

Read 2 more answers

Please Help I need ot now!!!!!! Ms. Moore is purchasing a house and needs to finance a $150,000 mortgage from the bank with an

alina1380 [7]

$251,618

Step-by-step explanation:

Amount = $ 150,000

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Rate per month = 0.003166

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3 years ago

A student was asked to identify the following numbers as rational or irrational. Determine if the student has made any mistakes.

ioda

Answer:

Yes they are wrong, rational & irrational ones down below.

Step-by-step explanation:

So, lets start this by asking, what is a rational and irrational number?

Rational numbers are literally any numbers that arent pi, e, or other symbols, as well as square roots.

Irrational numbers are exactly the opposite, being the numbers that are symbols, including square roots.

Note that the symbols listed above such as pi are values that are neverending.

Now, using what we know of rational and irrational numbers, let see which answers are rational and which are not.

So, we start off with:

-13/3

I do not see a square root.

I do not see a symbol such as pi either.

It is not a ever going number.(number that continues infinitly)

So -13/3 is a rational number.

Next we have $\sqrt{37}$

immediatly we tell it has a square root.

So $\sqrt{37}$ is a irrational number.

Next we have 0.1234

This is not a every going number.

There isnt a square root.

And it isnt a symbol.

So 0.1234 is a rational number.

Next we have $-\sqrt{100}$

Again, we can immediatly know it has a square root.

So $-\sqrt{100}$ is a irrational number.

Next we have -77

This is not every going.

It doesnt have a square root.

It doesnt have a symbol.

So -77 is a rational number.

Lastly we have $-\sqrt{12}$

Like the other ones, we can imediatly tell it has a square root.

So $-\sqrt{12}$ is a irrational number.

Bascially, to answer further questions, here is the criteria for a number being rational:

It does not have a square root.
It does not have a symbol.
It is not a infinitly going on number.

If one of these criterias are not met, then you know its a irrational number.

Hope this helps! :D

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3 years ago

Write an equation for "eight less than a number is seventy-five". what is the number?

Vladimir [108]

X-8=75
The number is 83

7 0

4 years ago

Simpson is solving the systems of equations below by substitution. Show Mr. Simpsons first step if he substitutes the first equa

In-s [12.5K]

Answer:

$x=6,y=42$

Step-by-step explanation:

The equations are

$y=5x+12$

$3y+4x=150$

Substituting the first equation in the second we get

$3(5x+12)+4x=150$

$\Rightarrow 15x+36+4x=150$

$\Rightarrow x=\dfrac{150-36}{19}$

$\Rightarrow x=6$

$y=5x+12=5\times 6+12\\\Rightarrow y=42$

So, the required values are $x=6,y=42$

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3 years ago