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3 years ago

How do I do orders of operations

Mathematics

2 answers:

shusha [124]3 years ago

8 0

Step-by-step explanation:

Go from left to right doing any "A" or "S" as you find them. You can remember by saying "Please Excuse My Dear Aunt Sally".

(Brackets,Exponents,Divide,Multiply,Add,Subtract).

xeze [42]3 years ago

4 0

You can use PEMDAS to solve order of operations!

Which means, "Please Excuse My Dear Aunt Sally".

P= Parenthesis

E= Exponents

M= Multiplication

A= Addition

S= Subtraction

Here is an example of how to solve order of operations:

1×1+2-(12-1)

First: (12-1) = 11

Second: 1×1=1

Third: 1+2=3

Fourth: 3-11=8

The answer would be 8.

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Chelsea took out three loans for a total of $ 78 comma 000 78,000 to start an organic orchard. Her business-equipment loan was

lianna [129]

Answer:

Business-equipment loan, A=$15000

Small-business loan, B=$24000

home-equity loan, C= $39000

Step-by-step explanation:

Let the Business-equipment loan at an interest rate of 11%=A

Let the small-business loan was at an interest rate of 5% =B

Let her home-equity loan was at an interest rate of 4.5%.=C

Since her total Loan=$78000

A+B+C=78000....(I)

Simple Interest = (P X R X T)/100

Since the Time, T=1 year

Interest on A = 0.11A

Interest on B = 0.05B

Interest on C = 0.045C

The total simple interest due on the loans in one year was $4605.

0.11A+0.05B+0.045C=4605....(II)

The annual simple interest on the home-equity loan was $105 more than the interest on the business-equipment loan.

0.045C = 0.11A +105...(III)

We proceed to solve the simultaneous equations.

A+B+C=78000....(I)

0.11A+0.05B+0.045C=4605....(II)

0.045C = 0.11A +105...(III)

From (III), 0.045C = 0.11A +105

Substitute 0.045C = 0.11A +105 into (II).

0.11A+0.05B+0.11A +105=4605

0.22A+0.05B=4500

From (III),

$C=\frac{22A}{9}+\frac{7000}{3}$

Substitute into (I)

$A+B+\frac{22A}{9}+\frac{7000}{3}=78000$

$\frac{31A}{9}+B=78000-\frac{7000}{3}$

$\frac{31A}{9}+B=\frac{227000}{3}$

$\frac{31A+9B}{9}=\frac{227000}{3}$

3(31A+9B)=9 X 227000

31A+9B=681000

0.22A+0.05B=4500 (Multiply by 9)

31A+9B=681000 (Multiply by 0.05)

1.98A+0.45B=40500

1.55A+0.45B=34050

Subtracting

0.43A=6450

A=$15000

From (III)

$C=\frac{22A}{9}+\frac{7000}{3}$

$C=\frac{22X15000}{9}+\frac{7000}{3} =39000$

C=$39000

from (I)

A+B+C=78000

15000+B+39000=78000

B=$24000

8 0

3 years ago

On a 10 question multiple-choice test, where each question has 5 answers, what would be the probability of getting at least one

Vera_Pavlovna [14]

The probability of getting at least 1 is 1 out of 50 questions

4 0

3 years ago

Landon was taking a math test. He finished 1/2 of the test in 3/5 of an hour. How much of the test will he have done in one hour

timama [110]

Answer:

$\frac{5}{6}\ of\ the \ test$

Step-by-step explanation:

we know that

Landon finished 1/2 of the test in 3/5 of an hour

by proportion

Find out how much of the test will he have done in one hour

$\frac{(1/2)}{(3/5)}\frac{test}{hours} =\frac{x}{1}\frac{test}{hour}\\ \\x=(1/2)*(5/3)\\ \\x=\frac{5}{6}\ of\ the \ test$

7 0

3 years ago

#1 2x-16<-18

Evgesh-ka [11]

Answer:

if it's finding x

#1 x<-1

#2 x<4

Step-by-step explanation:

2x-16<-18

add 16 to both sides

2x<-2

then divide 2 to both sides

x<-1

2x-16+4x<8

add like terms

6x-16+<8

add sixteen to both sides

6x<24

divide six to both sides

x<4

5 0

4 years ago

NEED HELP FAST CLICK TO SEE PLS

ss7ja [257]

Answer:

Last Option

Step-by-step explanation:

Last one because the dot on top of the 4 is filled in and that means it can also equal 4. The rest of the line is going to the right of the 4 so x will be more than 4. The little line below the more than sign means it can also equal 4. Hope this helped :)

4 0

3 years ago

Read 2 more answers