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nikdorinn [45]
3 years ago
10

Use order of operations to make this true 30 18 24 4 = 18

Mathematics
1 answer:
I am Lyosha [343]3 years ago
3 0

Answer:

30 - 18 + 24 ÷ 4 = 18

Step-by-step explanation:

The order of operations is

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

Use this word PEMDAS to remember the order of operation

Let us solve the problem

30  18  24  4  = 18

∵ 30 - 18 = 12

∵ 24 ÷ 4 = 6

∵ 12 + 6 = 18

That means put (-) between 30 and 18, (÷) between 24 and 4, then put (+) between 18 and 24

∴ 30 - 18 + 24 ÷ 4

- The first operation is the division

∵ 24 ÷ 4 = 6

∴ 30 - 18 + 6

- Start with 30 - 18 because in addition and subtraction we start

   with who come first

∵ 30 - 18 = 12

∴ 12 + 6

- Finally add them

∵ 12 + 6 = 18

∴ 30 - 18 + 24 ÷ 4 = 18

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3 years ago
10+2r=8 need the answer now
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Simplifying

10 = 2r + -8

Reorder the terms:

10 = -8 + 2r

Solving

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Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-2r' to each side of the equation.

10 + -2r = -8 + 2r + -2r

Combine like terms: 2r + -2r = 0

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3 0
3 years ago
Read 2 more answers
The answer using Pythagorean theorem
OverLord2011 [107]

Answer: 12.32 is the answer.


Step-by-step explanation: Using the pythagorean thereom we can solve this by using the formula A^2+B^2=C^2.

We substitute in the values,

17^2+B^2=21^2.

Now we simplify.

289+B^2=441

We subtract the 289 from both sides,

B^2=152                                                                                                                                                            

Now we use square root to find the answer.

12.32 is the answer.

Hope this helps!


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