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Mathematics 18 Online
OpenStudy (anonymous):

@charlotte123

OpenStudy (anonymous):

Which is an example of an algebraic expression? A. x + 4 = 13 B. g > 14 C. m – 37 < 52 D. b + 32

undeadknight26 (undeadknight26):

i think this is D not 100% sure...i forgot what a algebraic expression is...

OpenStudy (anonymous):

8 – 2 • 3 + 7

OpenStudy (shamil98):

an expression is something like c + 5 an equation is when it is equal to something c + 5 = 0 so yes it would be d then.

OpenStudy (anonymous):

8 – 2 • 3 + 7

OpenStudy (anonymous):

can you do this ^

OpenStudy (charlotte123):

8 – 2 • 3 + 7 P E M D A S ----> 8 – 6 + 7 ----> 2 + 7 ----> 9

OpenStudy (shamil98):

think of it as \[ 8 - (2 \times 3) + 7\] Multiply what is inside and then simplify from the left to the right.

OpenStudy (anonymous):

??????????????

undeadknight26 (undeadknight26):

he used pemdas showing that multiplication came first and just showed it like that to make it easier to show and solve...any more questions?

OpenStudy (anonymous):

yesssss

undeadknight26 (undeadknight26):

Shoot :D

OpenStudy (anonymous):

(5 • 8 – 12)(36 ÷ 9 • 4)

OpenStudy (anonymous):

Which two options could be the next step in simplifying this expression? 15 + (5 + 21) A. 36 + 20 (use the commutative property) B. 20 + 21 (use the associative property) C. 20 + 36 (use the distributive property) D. 15 + 26 (use order of operations)

undeadknight26 (undeadknight26):

i also this this is D because you must solve what is in the parenthesis to move on.

OpenStudy (anonymous):

Martha biked quite a few days last month. She biked 25 miles the first day and 15 miles each day after that. If m represents the number of days after the first day, which expression shows the total distance Martha biked last month? A. (15 + 25)m B. 15 + 25 + m C. 15m + 25 D. 25m + 15

undeadknight26 (undeadknight26):

C because only for the first day she biked 25 miles. each day after that she biked only 15.

OpenStudy (anonymous):

Which phrase could be represented by this expression? 2m + 7 A. seven more than half a number B. seven more than twice a number C. two more than seven times a number D. twice the sum of a number and seven

undeadknight26 (undeadknight26):

i would say B because the word form of it is seven more that twice a number.

OpenStudy (anonymous):

Jarod is putting a fence around his square lot. He wants to put 20 posts on each side of his lot. This includes one post placed in each corner. How many posts will Jarod need? A. 24 B. 80 C. 76 D. 60

undeadknight26 (undeadknight26):

well lets say its a square and that a square has 4 sides...so 20 x 4 = 80 which is your answer.

OpenStudy (anonymous):

Jorge's rectangular garden was 17 feet long and had a perimeter of 54 feet. He made his garden 5 feet longer. What is the area of his new garden? A. 220 square feet B. 22 square feet C. 64 square feet D. 85 square feet

undeadknight26 (undeadknight26):

i dunno....@charlotte123

OpenStudy (anonymous):

lets skip this one

OpenStudy (anonymous):

shall we

undeadknight26 (undeadknight26):

kk.

undeadknight26 (undeadknight26):

the answer is C:

undeadknight26 (undeadknight26):

17*2=34 54-34=20/2=10 feet wide 17+5=22 ft long* 10 wide= 220

undeadknight26 (undeadknight26):

so you undeadstand @angelv00 ?

OpenStudy (anonymous):

Which information is necessary to solve this problem? A computer company invited 3 students from each of the 50 states to compete in a contest. Each student had to correctly solve 5 problems to make it to the finals. How many students were invited to compete in the contest? A. 3 students, 50 states, 5 problems B. 3 students, 5 problems C. 50 states, 5 problems D. 3 students, 50 states

OpenStudy (anonymous):

yes undeadly

undeadknight26 (undeadknight26):

lol don't use my awesome puns...it only works with me because im undead :p and does 3 students, 50 states mean 3 x 50? if it dose than thats ur answer!

OpenStudy (anonymous):

ok sorry LOL:P

undeadknight26 (undeadknight26):

does* well now u know.

OpenStudy (anonymous):

Francine wants to estimate the answer to this problem to see if her answer is reasonable. 6548 – 4277 Which expression shows these numbers correctly rounded to the nearest hundred? A. 6500 – 4200 B. 6600 – 4300 C. 6600 – 4200 D. 6500 – 4300

OpenStudy (anonymous):

how old are you undead

undeadknight26 (undeadknight26):

me? im 14. any whoo..i think it would be B..because: 5 and anything over makes you round it.

undeadknight26 (undeadknight26):

im not 100% sure its B...

OpenStudy (anonymous):

Julia solved this problem. Peter had a strip of leather 58.8 cm long. He cut the strip of leather into 6 equal-length pieces. How long was each piece of leather? Julia said the answer was 0.98 cm. Is Julia's answer reasonable? A. No, because 60 + 6 = 66. B. No, because 60 • 6 = 360. C. No, because 60 ÷ 6 = 10. D. Yes

undeadknight26 (undeadknight26):

58.8/6 = 9.8...hmmm tricky.

undeadknight26 (undeadknight26):

i would say C...sounds most reasonable...

OpenStudy (anonymous):

Which describes a situation when an estimation is appropriate? A. Margo wants to buy a sweater for $15.98 and a pair of socks for $1.98. She has $20. She wants to know if she has enough money to buy both. B. Margo buys a sweater for $15.98 and a pair of socks for $1.98. She gives the cashier $20. The cashier wants to know how much change to give Margo.

undeadknight26 (undeadknight26):

well i would say that margo is stupid but thats not a option..so i would say A.

OpenStudy (anonymous):

LOL GOOD ONE REally good one

undeadknight26 (undeadknight26):

afk for a moment...

OpenStudy (anonymous):

we are done with questions tell me about yourself and i will tell you everything about me

OpenStudy (anonymous):

lol

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