Mathematics Middle School

Why is it important to use the order of operations to evaluate algebraic expressions?

Answers

Answer 1
to see your work and be able to check if you have messed up on anything

Related Questions

Jordan bikes at a speed of 8 2/3 mph. How many miles will he bike in 2/3 of an hour?

Answers

Answer:

26.87 miles

Step-by-step explanation:

Answer: 5 7/9

Step-by-step explanation:

Ingrid spends $120 on car repairs. Which integer represents the amount of money Ingrid must earn in order to create a zero pair?
–240
–120
120
240

Answers

Answer: -120

Step-by-step explanation:

this would be the answer because if you take a positive and add it to a negative you get zero if their the additive inverse of the number.

What is 110% of 160?

The first person to answer gets Brainliest

Answers

Oh it’s just 160 all you do is 100×160÷100 and then you get 160

Answer:

176 Basically find whats 10% of 160 and then add that to 160 and there is your answer

Sue ran 7 miles more than Jill last week. Sue ran 11 miles. Which equation will tell you how many miles Jill ran?A) x + 7 = 11B) x − 7 = 11C) x + 7 = −11D) x − 7 = −11

Answers

Its A because Sue ran 7 miles more and you’re supposed to add the amount of miles Due ran not subtract them.

Answer:

um

Step-by-step explanation:

Will mark brainlest pls dont answer if you don't know! fill in the table by following the rules provided for each backpack

Answers

Basically you multiply each of them: Backpack 2 (2x,2y) and (0,2) it will be (0,4)

what happens if you take 65% of $21.00 and compute 110% of the reduced price

Answers

Answer:

21.94

Step-by-step explanation: because i did some basic math

15.015- 21.00x0.65x1.1

Write the standard form of the number shown.

two hundred thirty million, three hundred forty-four thousand, nine hundred ninety-six

Answers

Answer:

230,344,996 is my answer. Hope this could help you!

22/39 of 3/11 plz help asap :)

Answers

Answer:

2/13

Step-by-step explanation:

To find a fraction of a fraction, you just multiply the two.

So 22/39 x 3/11 is 22x39 over 3/11

or 66/429.

Simplified would be 22/39.

The value of 22 / 39 of 3 / 11 on simplification is 6 / 39.

What is multiplication?

The fundamental concept of making the same number of additions repeatedly is represented by the action of multiplication. The results of multiplying two or more integers are known as the products, and the factors that are used in the multiplication are referred to as the factors.

Given:

22 / 39 of 3 / 11

As we know of means multiplication then,

22 / 39 × 3 / 11

(22 × 3) / (39 × 11)

66 / 429

This can be simplified as,

6 / 39

To know more about multiplication:

https://brainly.com/question/1135170

#SPJ2

The three oldest children need shoes. You find a store that has shoes on sale. All shoes in the store are marked $10 per pair. You have a choice of “Three for the price of two” or “Buy one and get 25% off the second.” Which of these is the best deal? Explain your reasoning.

Answers

Answer:

3 for the price of 2

Step-by-step explanation:

I had this question

Okay, they all equal 30 bucks. The first one would change into 20 bucks and the other would be Take off 10 by 30, 20,   20 with 25% off is 15. Then 15 + 10 is 25.

First one = 20.

Second one = 25.

Three for the price of two is cheaper.

please help me with this question (:

Answers

Answer:

Empty box number 1: 6.

Empty box number 2: 75.

Drop down box selection: Correct.

PLEASE HURRY
what % of 98 is 13?

Answers

Answer:

12.74

Step-by-step explanation:

give brainliest please

Answer:

7.538461538461538 % of 98 is 13

Step-by-step explanation:

1 1/3 x 5/8
Please help, no links or out of context answers, thank you!

Answers

Answer:

so, i have a method of multiplying fractions, but im not going to strait give you the answer

Step-by-step explanation:

multiply the whole number (1) by the denominator (3) and then add it to the numerator (1).

you multiply the fractions from there.

this is a very fun way of doing fraction multiplying with mixed numbers!

have a good day! :D

I got 0.83333333333 or 5/24

find the area of these shapes:

Answers

Answer:

4. 25.12 cm²

5. 28.56 cm² (square = 16 cm²) (semi-circle = 12.56 cm²)

Step-by-step explanation:

4. pi*4^2= 50.265
50.265/2=25.133

5. 4^2=16
pi*2^2=12.566
12.566/2=6.283
16+6.283=22.283

Find the total cost with sale tax.
Holly has $15 to buy a gift for her brother. She found a stuffed animal that cost $12.50. With 10.1% sales tax added on, what is the sale tax? What is the total cost of the stuffed animal with tax included? Will holly have enough money to buy the gift?

Answers

the total cost is 13.76, she has enough money. (accidentally posted the answer in the comments so ignore that)
13.76 is the answer

Find the percent markup

A store advertises a 35% markdown on the PlayStation 5 gaming console. It normally sells for $1,019. what is the final sale price?

Answers

the final sale price would be $662.35
ANSWER: $662.35

EXPLANATION:

We know the how much the PS5 cost and we know the markdown percentage. So we need to find 35% of 1,019 because we need to know how much to take away.

35% of 1,019 = 356.65

So now we take the original price and subtract 356.65 from 1.019.

When we do this we get $662.35

A line passes through (2, 8) and (4, 12). Which equation best represents the line?
1. y = 1/2x + 6

2. y = 2x + 7

3. y = 2x + 4

4. y = 1/2x + 10

Answers

y=2x+4 because we’re moving up 2 units for every unit we move to the right, and if we plug 0 in for X we end up with the +4
I would say 3 (I am not completely positive, I am not that smart with graphs)

X: (2 + 4) / 2 Equals: 3
Y: (8 + 12) / 2 Equals: 10
Then multiple 3 by 2 get 6, add four, you get 10 which is equal to Y

Show me how to do this on paper i need it right now

Answers

Answer:

Step-by-step explanation:

32 x 10 = 320

32 x 4 = 128

320 + 128 = 448

Write the phrase as an expression. Then evaluate the expression when $y=20.

3 less than the quotient of a number y and 4

Answers

y/4-3 y=20 the answer is 2

Answer:

20/4 -3, which equals 5-3, or 2

Step-by-step explanation:

3 less than= -3

the quotient of a number y and 4, with y being 20= 20/4

Divide: 20/4 = 5

combine the terms, either 5-3 or -3 +5, you'll end up with 2 either way

Leroi and Sylvia both put $100 in a savings account. Leroi decides he will put in an additional $10 each week. Sylvia decides to put in an additional 10% of the amount in the account each week.

Who has more money after the first additional deposit? Explain.

Who has more money after the second additional deposit? Explain.

Answers

Leroi’s account

$100
After first deposit = $100+$10=$110
After second deposit= $110 + $10 = $120


Sylvia’s account

$100
10% of $100 is $10
After first deposit = $100+ $10 = $110
10% of $110 = $11
After second deposit = $110 + $11 = $121

Therefore after their first deposit, both will have the same value in their accounts.
But after the second deposit, Sylvia will have 1$ more in her account than Leroi.

Answer:

ok just follow these steps

Step-by-step explanation: part over whole like this    part                       then            percent over 100% like this                                  percent

                                          -----------over                  ------------------

                                             whole                                 100%

Evaluate the expression when b=9 and c=4 . bc+12.3 =

Answers

48.3

9*4 = bc, equals 36
36+12.3, equals 48.3
48.3 because when two letters are next to each other and they are worth a number you multiply them for example 9(4)+12.3 so first you multiply 9 and 4 you should get 36 then you add 12.3 which will get you 48.3

please help me with this question !

Answers

I’m pretty sure it’s 36
the answer is 4! 4 goes in to negative 7 twice so just 2 times the remainder and got 4

HELLPP ME PLEASEEE


What was the unit rate for a drumstick in the 16 pack of drumsticks for $17.60?

Answers

Answer:

$1.10

Step-by-step explanation:

17.60 ÷ 16 and you have your answer 1.1 or $1.10

Mrs. Hussen has two similar recycling bins in her office. The dimensions of the smaller bin can be found by dilating the dimensions of the larger bin by a scale factor of 0.75.

Answers

Answer:

7.5 and 10.5

Step-by-step explanation:

You can use this equation

1/4 of 14 and 1/4 of 10

Those two are your answers

7.5 and 10.5 is the answers

8.067 ; hundredths Round each decimal to the place indicated.

Answers

Answer:

8.06

Step-by-step explanation:

Decimals go in the order 10ths hundredths thousandths ten thousandths and so on. In rounding any decimal, one number gets added to the left if the number is 5 or over and the number is discarded if it is lower than 5.

for example if the number was 1.2345      5 would make 4 5 1.235 then 5woould make 3 4 1.24 but if you want to round to a smaller number the other numbers would not go up the numbers would just be discarded.

Sam has saved 140 sand dollars and wants to give them away equally to n friends. Write an expression to show how many sand dollars each of Sam's friends will receive.

Answers

You would divide 140 by the number of friends. So it would be B. 140/n

Answer:

The answer is B. Equal distribution of the dollars would be to divide by how many friends there are.

Help plz:

14. Factor the following:
e. q^2 - 7q + 12
f. r^2 + 13r + 12
g. x^2 - x - 20
h. y^2 + 5y + 6

Answers

Answer:

e. (q-3)(q-4)

f. (r+1)(r+12)

g. (x-5)(x+4)

h. (y+2)(y+3)

I have a picture of my question please answer this
Thanks a lot for all your help

Answers

Answer:

12p = 420

Step-by-step explanation:

12p is 420 hope that helps

A picture shows a roof of a house. It has a right triangle-shaped with the base of 12 feet as span and height of 4 feet as height of roof. The hypotenuse of the triangle is the slope of the roof.
The pitch of the roof is

Answers

Answer:

Step-by-step explanation:

Pythagorean Theorem:[tex]a^{2} + b^{2} = c^{2}[/tex]

[tex]12^{2} + 4^{2} = c^{2}[/tex]

144 + 16 = [tex]c^{2}[/tex]

160 = [tex]c^{2}[/tex]

Square root 160

12.6491106 = c

Round to the nearest whole number

13=c

HELP MEEEEEE PLEASE<3


In 1 7/8 days, a construction crew built 2 3/4
miles of road.
What is the unit rate in miles per day?

Answers

Answer:

3 3/5 miles

Step-by-step explanation:

6 3/4 divided by 1 7/8=

3 3/5

3 3/5 is the answer

Please help quick! Thanks! (NO LINKS!)

Answers

Answer:

i wish i could help  i would of

Step-by-step explanation:

Answer:

The answer is 1.54 × 10^1.

Hope this helps. :D

Step-by-step explanation:

Pls mark brainliest.

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