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stepan [7]
3 years ago
7

To find the value of a mathematical expression using the order of operations is to .

Mathematics
2 answers:
katrin2010 [14]3 years ago
5 0

Answer:

First, add, subtract, multiply, or divide within the parenthesis (if there are parenthesis). Then, you do the exponents. After that, you multiply and divide left to right. Finally, you subtract left the right.

Step-by-step explanation:

Order of Operations is also known as PEMDAS or Parenthesis, Exponents, Multiply, Divide, Add, Subtract. It means if we have an equation that is:

5 + 6 x 2, we do not add first. We multiply first, so we do 6 x 2, which gives us 12. 12 + 5 = 17 and that is your answer.

I hope that this helps! :)

bixtya [17]3 years ago
3 0

Answer:

I think your looking for evaluate

Step-by-step explanation:

I have the same program as you

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This question is incomplete

Complete Question

Write a rational equation that relates the desired percentage p, to the amount A of a 30% solution that needs to be added to 1 liter of 10% acid solution to make a blend that is p% acid, where 0<p<100 . What is a reasonable restriction on the set of possible values of ? Explain your answer.

Answer:

100(0.1 + 0.3A)= (1 + A) P

Step-by-step explanation:

A of a 30% solution that needs to be added to 1 liter of 10% acid solution to make a blend that is p% acid,

Hence,

10% of 1 + 30% of A = p%(1 + A)

0.10 + 0.3A = (p/100)(1 + A)

Divide both sides by 1 + A

0.1 + 0.3A/ 1 + A = p/100

Cross Multiply

100(0.1 + 0.3A) = 1 + A(p)

From the above calculation, we can see that, the blend that would be formed is not lower than 10% or greater than 30%

10% < p< 30%

8 0
2 years ago
The hypotenuse of a right triangle is 10cm long. The longer leg is 2cm longer than the shorter leg. Find the side lengths of the
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We need Pythagoras theorem here
a^2+b^2 = c^2
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expand (S+2)^2
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simplify and form standard form of quadratic
S^2+2S-48=0
Solve by factoring
(S+8)(S-6) = 0   means (S+8)=0, S=-8
or                                   (S-6)=0, S=6
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Step-by-step explanation:

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