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- matthew120

WILL FAN

- jamiebookeater

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- matthew120

Evaluate.
8 – 2 • 3 + 7

- anonymous

hii

- muscrat123

PEMDAS

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## More answers

- jdoe0001

hint: \(\huge \mathbb{PEMDAS}\)

- anonymous

haha I was just gonna say that xD

- muscrat123

first u need to multiply

- jdoe0001

__thunderbuddys__ that means you need to wear a tinfoil hat, so we don't read you mind =)

- anonymous

hahah xD

- muscrat123

P arenthesis
E xponents
M ultiplication
D ivision
A ddition
S ubtraction
*note - for MD and AS, solve as if reading a book - from left to right

- muscrat123

omg he left

- anonymous

:(

- muscrat123

lol

- matthew120

OK IM BACK

- muscrat123

still need help?

- Future_Einstein

the answer is Nine. do you fan and medal?

- muscrat123

me?

- muscrat123

and i know the answer but i wanna make sure s/he understands

- matthew120

ANOTHER

- matthew120

Evaluate.
(16 + 32 ÷ 4)(21 – 6 • 3)

- muscrat123

ok

- muscrat123

do u know what parentheses back to back means?

- Future_Einstein

24 times 21 is your answer :D

- matthew120

NO

- Future_Einstein

504

- muscrat123

it means to multiply if u werent being sarcastic.

- muscrat123

@Future_Einstein please dont give direct answers

- Future_Einstein

i wasn't. i love math i dont joke around on this site

- matthew120

HEY FUTURE I CAME HERE TO UNDERSTAND NOT TO GET THE ANWSER

- muscrat123

ok @matthew120 ill help u

- Future_Einstein

no. sorry its 24 times 3

- Future_Einstein

Llf

- Future_Einstein

72 is the answer my friend.

- matthew120

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

- muscrat123

please explain it to him!!!!!!!!!!!!!!!!1

- muscrat123

b b/c PEMDAS says to solve parenthesis 1st, which is order of operations:)

- matthew120

ok

- matthew120

The Gonzales family drove 300 miles on the first day of their vacation and 250 on each day after that. If d represents the number of days they drove after the first day, which expression gives the total distance they drove?
A.
250d + 300
B.
250 + 300d
C.
+ 300
D.
250 + d + 300

- matthew120

hellp

- muscrat123

sorry cant help w any more rite now

- matthew120

ok

- texaschic101

300 + 250d

- matthew120

ok

- matthew120

Which phrase could be represented by this expression?
6(t + 9)
A.
the sum of six times a number and nine
B.
six times the sum of a number and nine
C.
six more than the sum of a number and nine
D.
six times the product of a number and nine

- muscrat123

b sorry dont have time to explain

- matthew120

i knew it

- matthew120

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.
60
C.
76
D.
80

- matthew120

hello

- texaschic101

well...he wants to put 20 posts on each side of a square lot. There are 4 sides to a square...so 20 * 4 = 80 (and this includes the corner posts)

- matthew120

100

- muscrat123

howd u get 100
?

- matthew120

no 80

- matthew120

oops

- texaschic101

yes...80

- matthew120

Tomas bought some fruit at the market. He bought twice as many melons as apples. He bought 12 more melons than oranges. He bought 11 apples. How many pieces of fruit did Tomas buy?
A.
43
B.
23
C.
46

- matthew120

23

- texaschic101

11 apples
twice as many melons as apples = 22
12 more melons then oranges = so oranges = 22-12 = 10
so you have 11 + 22 + 10 = 43

- matthew120

https://static.k12.com/calms_media/media/370500_371000/370571/3/d6ea9fa68cefc1a8d0b99cbda7ea77239744f061/45648_question.jpg

- Future_Einstein

@muscrat123 sorry i didn't know not to give direct answers :D

- matthew120

Which two expressions could be used to calculate the area of the patio shown?
A.
(20 • 22) – (16 • 7)
B.
(22 • 13) + (20 • 6)
C.
(20 • 6) + (16 • 13)
D.
(20 • 22) – (6 • 1

- texaschic101

well...we are not really supposed to give direct answers...my bad

- muscrat123

?

- texaschic101

sorry...geometry is not my thing :(

- muscrat123

no ur okay bc u explained it @texaschic101 lol

- matthew120

hellloo

- muscrat123

lol she answered

- matthew120

imma he

- muscrat123

yea texaschic answered u
she

- matthew120

whats the anser

- texaschic101

not the last one...I am not so good at geometry

- matthew120

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, 5 problems
B.
3 students, 50 states, 5 problems
C.
3 students, 50 states
D.
50 states, 5 problems

- matthew120

texas

- texaschic101

3 students from each state = 3 * 50 = 150
there is extra info not needed in this problem...it is asking how many students were invited....that would be 150 (3 from each state).....it is not asking how many made it to the finals

- texaschic101

so its 3 students and 50 states

- matthew120

Andrea wants to estimate the answer to this problem to see if her answer is reasonable.
7457 – 3908
Which expression shows these numbers correctly rounded to the nearest hundred?
A.
7400 – 4000
B.
7400 – 3900
C.
7500 – 3900
D.
7500 – 4000

- texaschic101

just round your numbers...
7457 rounded = 7500
3908 rounded = 3900
so its : 7500 - 3900

- matthew120

Sharon solved this problem.
The zoo needs 1436 pounds of hay each week to feed the animals. Hay costs $2.00 per pound. About how much does the zoo spend on hay each week?
Sharon said the zoo would spend $718 on hay each week.
Is Sharon's answer reasonable?
A.
No, because 1500 • 2 = 3000, and the zoo needs 1436 pounds of hay each week, so the answer will be a bit more than this estimate.
B.
Yes, because 1500 ÷ 2 = 750, and the zoo needs 1436 pounds of hay each week, so the answer will be a bit more than this estimate.
C.
No, because 1400 • 2 = 2800, and the zoo needs 1436 pounds of hay each week, so the answer will be a bit more than this estimate.
D.
Yes, because 1400 ÷ 2 = 700, and the zoo needs 1436 pounds of hay each week, so the answer will be a bit more than this estimate.

- texaschic101

No....because 1400 * 2 = 2800. and the zoo needs 1436 lbs.....so the answer will be a bit more

- matthew120

so what

- texaschic101

C

- texaschic101

do you understand why ?

- matthew120

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.

- MrNood

BTW - it is NOT 80 posts for the square fence
|dw:1443655811615:dw|
the corner posts are counted in 2 sides

- matthew120

texas

- texaschic101

look at it this way....would you estimate how much change to give back...or wouldn't you want to be perfectly sure about the change to give back

- vikstar2.0

PEMDAS is needed to answer this problem

- matthew120

i think its b

- MrNood

|dw:1443655971365:dw|

- texaschic101

not B...you do not estimate on change.
MrNood....but it says that the 4 corner posts are included...so wouldn't you need 80 since there is 20 on each side ?

- muscrat123

@MrNood is says 20 posts ON EACH SIDE

- matthew120

oh

- matthew120

sorry i have glasses on on i cant read in them

- matthew120

A geologist measured the mass of some rock samples and recorded this data. 2.87 kg, 1.94 kg, 1.6 kg, 2.25 kg, 1.9 kg
What is the total mass of these rocks, recorded to the appropriate degree of precision?
A.
10.56 kg
B.
10.5 kg
C.
10.0 kg
D.
10.6 kg

- texaschic101

lol...I have glasses and I have to read with them

- matthew120

heeeeellllllllliooooo

- texaschic101

just add them up

- MrNood

@muscrat123
my drawing is just an illustration - I could not be bothered to draw 20 posts on each side
there are 5 posts on EACH sicde of my drawing - but only 16 posts in total
the 4 corner posts are counted in 2 sides each
the correct answer is 76

- matthew120

nooooooooooo

- matthew120

nnooooooooooo

- matthew120

bnooooooooo

- matthew120

noooooooo

- matthew120

i got a 73

- matthew120

nooooooooo

- matthew120

no

- MrNood

|dw:1443656293867:dw|
|dw:1443656332098:dw|

- matthew120

bye

- texaschic101

I am still confused on the garden thing.....20 posts on each side...including the 4 corner posts....to me it still seems like it would be 80....ohhhh I see it now...it is 76.
|dw:1443656690024:dw|

- texaschic101

MrNood was right on this one

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