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3 years ago

50+10(8*1)+2 What property do you use to solve this and how.

2 answers:

7 0

You need to use PEMDAS
So first you do the parenthesis.
8*1=8.
So now re-write the problem.
50+10*8+2
Now you are going to multiply.
10*=80
Now re-write the problem again.
10+80+2
10+80=90+2=92
So the answer to this problem is 92.

Sergio [31]3 years ago

7 0

You should use PEMDAS
(parenthesis, exponents, multiply, divide, add, and subtract)
you can remember it by using
Please Excuse My Dear Aunt Sally

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How many two-digit numbers can be made from the following cards?

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25 numbers

Step-by-step explanation:

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$5 {}^{2} = 25$

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3 years ago

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3 years ago

James practiced piano for 48 minutes. Alisa practiced for 5 times as long as James. How many minutes did Alisa practice? How man

wariber [46]

48(5)=n
when n= the amount of time that Alisa practiced the piano.
Alisa practiced for 240 minutes.

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2 years ago

400.0 ml of a gas are under pressure of 80.0 kpa what would the volume of the gas be at a pressure of 100.0 kpa

Ber [7]

Answer:

The final volume is 320 mL at pressure of 100 kPa.

Step-by-step explanation:

Boyle's law gives the relation between volume and pressure of a gas. It states that at constant temperature, volume is inversely proportional to its pressure such that,

$V\propto \dfrac{1}{P}\\\\P_1V_1=P_2V_2$

Let

$V_1=40\ mL\\\\P_1=80\ kPa\\\\P_2=100\ kPa$

We need to find $V_2$ . Using above equation, we get :

$V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{400\times 80\times 10^3}{100\times 10^3}\\\\V_2=320\ mL$

So, the final volume is 320 mL at pressure of 100 kPa.

6 0

3 years ago