My sister has math problems. Super easy! She's in 7th grade. Can anyone help her?

- anonymous

My sister has math problems. Super easy! She's in 7th grade. Can anyone help her?

- Stacey Warren - Expert brainly.com

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- chestercat

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- anonymous

sure

- anonymous

What are the problems??

- Bossvideogamer21

i can

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## More answers

- anonymous

Convert the fraction to a decimal. 5/10
A. 0.56
B. 0.83
C. 5.6
D. 8.3

- anonymous

Well 5/10 is .5 so the closest thing would have to be A

- anonymous

Convert the fraction to a decimal.
A.
11.01875
B.
11.0316
C.
11.1875
D.
11.316

- anonymous

the fraction is 11 3/16

- anonymous

3/16 = .1875 + 11 = 11.1875

- anonymous

Which mixed number is equivalent to this decimal?
8.00027

- anonymous

@fainteckos

- anonymous

are there choices or will anything work?

- anonymous

8 27/100,000... 8 27/10,000......8 27/1,000.....8 27/100

- Bossvideogamer21

800027/100000

- anonymous

Thats wrong.

- Bossvideogamer21

and 8 27/100000

- anonymous

well you cant just remove zeros or it will change its corresponding decimal

- Bossvideogamer21

and no its not wrong i searched it on decimal to fraction calculator

- anonymous

sorry i meant 8 27/100000

- anonymous

Which shows the numbers in order from least to greatest?
7 4/5.... 7.6.....7.41..

- anonymous

7.41, 7.6, 7 4/5

- Bossvideogamer21

@EmoMuch?Yes. why does he get a medal i answered that question first

- anonymous

Because he answered my first question.

- anonymous

Which mixed number is greater than 8.45?
A. 8 3/8
B. 8 4/9
C. 8 3/5
D. 8 5/12

- anonymous

8 3/5

- anonymous

A.
18
B.
36
C.
72
D.
216

- anonymous

What is the least common denominator for 5/12 and 7/18

- anonymous

36.

- anonymous

what fraction is equivalent to 5 3/4?
a. 19/4
b. 23/4
c. 15/4
d. 8/4

- anonymous

B

- kweenlexis

she in the 7th grade?

- anonymous

Yes.

- kweenlexis

im in the 7th too but im learning something different!....Does she have any more questions?

- anonymous

Yes. But it takes a minute because i have to type out all of them.

- kweenlexis

ok

- anonymous

Which mixed number is equivalent to 904/100?
a. 9 2/5
b. 9 4/10
c. 9 4/25
d. 9 1/25

- kweenlexis

The answer is B.

- anonymous

This next one i cant type or paste so let me figure it out 1 sec.

- kweenlexis

ok

- anonymous

Ugh. I give up. she said she will just guess the next one.

- anonymous

Sally made the conjecture that the sum of any two prime numbers is a prime number.
Which equation is a counterexample to her conjecture?
A.
2 + 5 = 7
B.
15 + 4 = 19
C.
2 + 11 = 13
D.
3 + 11 = 14

- kweenlexis

ok

- anonymous

Anyone know the answer to that one?

- kweenlexis

i do im going to explain it for her to though.

- anonymous

Okay

- kweenlexis

Prime numbers are numbers that are divisible by the number itself and the number 1.
Prime numbers go on forever, but here is a list of prime numbers up to 20: 2, 3, 5, 7,11,13,17,19
So we are looking for an answer that makes the conjecture not true.
Looking at the first answer, we see that when we add two prime numbers we get a number that is not on our list of prime numbers. So this answer shows that the conjecture is not true. This answer is the correct answer.
Looking at the other answers, we see that when we add two prime numbers we get a prime number. So this answer doesn't show the conjecture is not true. So this answer is no good.
The third answer again shows that when we add two prime numbers we get another prime number. So this answer doesn't show the conjecture is not true. So this answer is no good.
The final answer adds a prime number and a composite number. But the conjecture says we must add two prime numbers. So this answer is no good.
So the first answer is correct.
|dw:1444243693373:dw|

- kweenlexis

sorry its so long :(

- anonymous

She said woah and her eyes were huge lol

- kweenlexis

lol :) i dont blame her lol i would have done the same thing :)

- anonymous

She got more than half wrong.

- anonymous

Now she has to retake it.

- kweenlexis

:O how did that happen??

- anonymous

The last one was D.

- kweenlexis

ooooopppppppsssssss SORRRRRRRYYYYYYYY :((((((((

- anonymous

She said its okay. Can you help her with a few on her new test?

- kweenlexis

yeah i can try lol i will tell yall if i dont know it and i may add someone i think know it :) SO BRING IT ON

- anonymous

OKay.

- anonymous

What is the LCD for the fractions 3/16 and 11/24?

- kweenlexis

give me a second :)

- kweenlexis

LCD right

- kweenlexis

Rewriting input as fractions if necessary:
3/16, 11/24
For (16, 24) the least common multiple (LCM) is 48.
Therefore, the least common denominator (LCD) is 48.
Rewriting as equivalent fractions with the LCD:
9/48, 22/48

- anonymous

48?

- kweenlexis

oh sheesh i was doing the wrong thing uhhh let me redo it ok dont put that

- anonymous

Okay.

- kweenlexis

yeah that answer would be 48 because 16 x 3=48 and 24 x 2=48 so it would be 48. :)

- anonymous

What fraction is equivalent to 4 2/3?
a. 13/12
b. 26/12
c. 13/6
d. 28/6

- kweenlexis

give me a secondran out of paper :)

- kweenlexis

got to go get some more from down stairs

- anonymous

Okay.

- kweenlexis

D because these are all of the equ. fractions to 4 2/3................. 14/3 = 28/6 = 42/9 = 56/12 = 70/15 = 84/18 = 98/21 = 112/24 = 126/27 = 140/30 = 154/33 = 168/36 = 182/39 = 196/42 = 210/45 = 224/48 = 238/51 = 252/54 = 266/57 = 280/60

- kweenlexis

and 28/6 is the only answer choice you have so 28/6

- anonymous

Which mixed number is equivalent,to 708/100?
a. 7 1/800
b. 7 2/25
c. 7 1/12
d. 7 4/5

- kweenlexis

i am not sure :(((

- kweenlexis

@YoungStudier

- YoungStudier

What does your sister think it is?

- anonymous

She says B.

- YoungStudier

I believe she is correct.

- kweenlexis

@YoungStudier i passed my math test today with a 100%

- YoungStudier

Good job @kweenlexis :)

- anonymous

##### 1 Attachment

- kweenlexis

thanks @YoungStudier the test wasn't that hard but i needed help on it and you my favorite helper (you) :( wasn't on so i got other to help me :)

- kweenlexis

yo sister n k12

- kweenlexis

your sister schooled through k12 ? @EmoMuch?Yes.

- anonymous

Yes.

- anonymous

Are you still helping with problems @kweenlexis

- kweenlexis

oh i am to she must be in a different math teach..and yes i am i just dont no the answer to that question right there :(

- anonymous

##### 1 Attachment

- anonymous

@YoungStudier?

- kweenlexis

ik ion know the answe rto that question right there...Who is your sister math teacher?

- kweenlexis

answer*

- anonymous

Her NML teacher is Mrs. Olson. Her homeroom teacher for her other math class is Theresa Dilts.

- kweenlexis

you said she in 7th grade?

- anonymous

Yes

- kweenlexis

|dw:1444246443414:dw|

- kweenlexis

what*

- anonymous

I still never got an answer on my last one.

- kweenlexis

i dont know the answer ti that one.

- anonymous

@YoungStudier do you know the answer?

- YoungStudier

Unfortunately, No.

- anonymous

K 1 second.
Im going to close this question real quick.

- anonymous

A

- anonymous

Cynthia made the conjecture that the sum of any prime number and any composite number is a composite number.
Which equation is a counterexample to her conjecture?
A.
11 + 2 = 13
B.
11 + 9 = 20
C.
13 + 2 = 15
D.
5 + 8 = 13

- anonymous

last question.

- anonymous

@kweenlexis @YoungStudier @fainteckos

- anonymous

Nevermind, got it.

- anonymous

My sister says thanks everyone for helping out.

- kweenlexis

Tell her i said you welcome...what did she make?

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