Mathematics High School

Which of the following is true about the order of operations?
1. Multiplication comes before division.
2. Addition and subtraction are done from left to right.
3. Addition and subtraction are done before multiplication and division.
4. Exponents are the first operation to be completed.

Answers

Answer 1

Answer:

2

Step-by-step explanation:

Answer 2

Multiplication comes before division. To add or subtract we can do from left to right by thousand, hundred, or any respective place value thus options (1) and  (2) are correct.

What is the arithmetic operator?

Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,

Summation = addition of two or more numbers or variable

Subtraction = Minus of any two or more numbers with each other called subtraction.

Using the PEMDAS rule,

Parenthesis = 1st

Exponents = 2nd

Multiplication = 3rd

Divide = 4th

Addition = 5th

Subtraction = 6th

Suppose an addition,

120 + 320

Now add from left to right,

100 + 300 = 400

20 + 20 = 40

Now, 400 + 40 = 440

Thus, adding from left to right is true.

Hence "Multiplication comes before division. To add or subtract we can do from left to right by thousand, hundred, or any respective place value ".

To learn more about the arithmetic operators,

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Related Questions

help me
Multiply 90 lb times 0.45 kg = ? kg

Answers

Answer:

40.5

Step-by-step explanation:

8,-1,-5,2? Which one!.............

Answers

Answer: I would say -8,-1

Step-by-step explanation:

Solve the inequality.
-4(2n-6)

Answers

Answer: -8n + 24

Step-by-step explanation:

-4(2n-6)

-8n + 24

Answer:-8n+24

Step-by-step explanation:

What is the value of 3/5÷9/2

Answers

Answer:

1/30

(Decimal: 0.033333)

Step-by-step explanation:

Answer:

2/15

Step-by-step explanation:

Hope this helps!

If a rectangle piece of dimensions 3 cm x 2 cm is cut from one corner of a rectangular sheet of dimensions 10 cm x 6 cm and attached to it's side projecting out of the rectangle, what will be the change in perimeter of the new shape thus formed?

Answers

Answer:

[tex]6\ \text{cm}[/tex]

Step-by-step explanation:

The sides of the larger rectangle are 10 cm and 6 cm.

The sides of the part cut out are 3 cm and 2 cm.

The part cut out is attached to one of the sides of the rectangle.

Perimeter of the new shape will be

[tex]6+7+2+3+2+3+2+13=38\ \text{cm}[/tex]

Perimeter of old shape

[tex]2(10+6)=32\ \text{cm}[/tex]

Change in the perimeter is [tex]38-32=6\ \text{cm}[/tex]

The perimeter of changed by [tex]6\ \text{cm}[/tex].

helpppppppppppppppppppppppppppppppppppppppppppp PLEASE

Answers

Answer:

x = 7/12

Step-by-step explanation:

20 = 15(x + 3/4) (Given)

20 = 15x + 45/4 (Distribute)

35/4 = 15x (Subtract 45/4 on both sides)

7/12 = x (Divide 15 on both sides)

You can substitute the solution for x to check.

20 = 15(7/12 + 3/4)

20 = 15(4/3)

20 = 20

Express in the form n : 1
9:3​

Answers

Answer:

n =3

hope it helps

Answer:

3:1

Step-by-step explanation:

cut by 3

..............

Rewrite the equation in slope intercept form
3y - 8x = -9

Answers

Answer:

y = (8/3)x - 3

Step-by-step explanation:

To get to slope intercept, just solve for y

3y - 8x = -9

3y = -9 + 8x

y = (-9 + 8x)/3

y = -9/3 + 8x/3  (distribute the 3 so we can reach the right form)

y = -3 + 8/3(x)

finally write in slope intercept form:

y = (8/3)x - 3

2x-6у =4 help I don’t know

Answers

Y=-2/3 + x/3......................

Yesterday, there were 40 problems assigned for math homework. Gavin got 28 out of 40 problems correct. What percentage did Gavin get correct?

Write your answer using a percent sign (%).

Answers

He has 70% of his questions correct.

This is why because 28/40 simplified is 7/10 and I know this is by dividing each number by 4. Also 7/10 and 0.7= 70%

Answer:

70%

Step-by-step explanation:

I'm pretty sure its 70 because write it as a fraction 28/40 when divide them both and you get 0.7 which is 70. I hope that works

Factor the trinomial: 5x^2 + 33x + 18​

Answers

Answer:

here you go

Step-by-step explanation:

Simplifying

5x2 + 33x + 18 = 0

Reorder the terms:

18 + 33x + 5x2 = 0

Solving

18 + 33x + 5x2 = 0

Solving for variable 'x'.

Factor a trinomial.

(6 + x)(3 + 5x) = 0

someone please help me ​

Answers

Answer:

(X,Y)=(1,-4)

Step-by-step explanation:

Mike saves $2,000 at a yearly simple interest rate of 2%. He earns $280 in interest. For how many years did he save this money?

Answers

Answer:

7 years.

Step-by-step explanation:

To find this, we need to find 2% of 2,000. To do this, we mulitply 2,000 by .02. This gets us 40. Now, we need to divide 280 by 40 to find the amount of years it took for Mike to get this money. When we do that, it gets us 7. That means Mike saved that money for 7 years.

The number of years that he saves this money will be 7 years.

What is simple interest?

Simple interest is the concept that is used in many companies such as banking, finance, automobile, and so on.

The formula for interest is written as,

I = (PRT)/100

Where P is the principal, R is the rate of interest, and T is the time.

Mike saves $2,000 at a yearly simple interest rate of 2%. He earns $280 in interest. Then the number of years is calculated as,

$280 = ($2,000 x 2 x T) / 100

$28,000 = $4,000 x T

T = $28,000 / $4,000

T = 7 years

The number of years that he saves this money will be 7 years.

More about the simple interest link is given below.

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What is the perimeter of a rectangle that
is 5 inches by 3 inches?

Answers

Answer:16

Step-by-step explanation:

It’s 16 because a rectangle has 4 sides and 2 of them are 5 and another 2 sides are 3 so 5 + 5 + 3 + 3 = 16

Write an equation of the line that passes through (0,-5) and is perpendicular to the line y=4/5x.

Answers

Answer:

y = -5/4x - 5

Step-by-step explanation:

6's + 2) = 18

S+2=
S=

Answers

Answer:

s+2=3

s=1

Step-by-step explanation:

make it braintliest please

Select the equation that represents the graph above.


y=x√−2y is equal to square root of x minus 2 , ,


y=x√+2y is equal to square root of x plus 2 , ,


y=x+2y is equal to x plus 2 , ,


y=x+2−−−−−√

Answers

Answer:

                                                          _

just did the test and got it right its /x + 2

Step-by-step explanation:

just did the test i cant make the simble though but the right answer is the one where the line is only above the x oh wait actually i see your questions know my delete key broke soooo its the 2nd option

Find the length and width of a rectangle.
Perimeter = 50
Side A = 3x + 2
Side B = x - 5

Answers

Step-by-step explanation:

Perimeter = 2 * (Side A + Side B)

= 2 * (3x + 2 + x - 5)

= 2 * (4x - 3)

= 8x - 6.

We have 8x - 6 = 50, so 8x = 56 and x = 7.

Length of rectangle = 3(7) + 2 = 23.

Width of rectangle = (7) - 5 = 2.

Answer:

Length of rectangle = 3(7) + 2 = 23.

Width of rectangle = (7) - 5 = 2.

Step-by-step explanation:

Could someone pls help me and explain this if you know it!!

Answers

Answer:

25% on question one

Step-by-step explanation:

For example, on question one, 5 students drink more than half a dozen sodas a week. If there is a total of 20 students you'd divide 5 by 20 and that should be the answer.

3(8 - x) = 7x - 6
Can someone explain how to get the answer please

Answers

Answer:

x=3

Step-by-step explanation:

The steps are in the picture below.

What is the mean of the set {4, 6, 8, 10}?

Answers

Answer:

Step-by-step explanation:

8 I think

Answer:

Defination:

.the collection of distinct elements or members.

Step-by-step explanation:

163-x=-52 equals what as the answer

Answers

Answer:

215=x

Step-by-step explanation:

Answer

x=215

Step-by-step explanation:

If abx-5=0 what is x in terms of a and b?
My answers: A. x=5/ab B. x=-5/ab C. x=5-ab D. x=ab-5

Please help... Thanks :)

Answers

Answer:

A. x=5/ab

Step-by-step explanation:

abx - 5 = 0

x = 5 ÷ ab

Dario increased his savings from $350 to $413 . What is darios percent increase in savings ?

Answers

Answer:

18%

Step-by-step explanation:

413-350=63%

63%/350=18%

What is the slope of the function below?
y=3x+5 please help!!!

Answers

X=-5/3 it’s a fraction

Need help asap!


what is the value of x and y?
2x+3=y​

Answers

Answer: `y`-value is double the `x`-value plus `3` will make the hanger balance.

So x can be 3 and y can be 9

A number n is no more than 8.

Answers

Answer:

n<8

Step-by-step explanation:

Answer: N < 8

Step-by-step explanation:

5. How much power is dissipated when 0.2 ampere of current flows through a 100-ohm resistor ?​

Answers

Answer:

4 W

Step-by-step explanation:

Electrical power, P = I²R where I = current and R = resistance.

Given that I = 0.2 A and R = 100 Ω,

P = I²R

P = (0.2 A)² × 100 Ω

P = 0.04 A² × 100 Ω

P = 4 W

16) Ken earned $128 from his part-time job this summer. He spent 25% of his money on games. He
is going to donate 1/6 of the remaining money to charity. How much will the charity receive?
OA) $15
OB) $16
OC $32
OD) $80

Answers

Answer:

B) $16

Step-by-step explanation

Which letter is in the solution set for graph #2

Answers

Answer:

A

Step-by-step explanation:

y > 0 - the region above the line together with that line

y ≥ 0 - the region above the line together with that line

y < 0 - the region below the line without that line

y ≤ 0 - the region below the line together with that line

We have:

y > 2 - the region above the line together with that line

y ≥ 2x - 3 - the region above the line together with that line

look at the picture

The common part is the solution.

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