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kvasek [131]
2 years ago
13

Please SHOW YOUR WORK!

Mathematics
1 answer:
kaheart [24]2 years ago
5 0

Answer:

x2= 0.11111111111   y+5= -9

Step-by-step explanation:

x2= 0.11111111111

replace x with 1/3 then multiply 1/3 by 1/3 which equals 0.11111111111

x2

1/3 2

1/3 x 1/3= 0.11111111111  

y+5

replace y with -14 then add - 14 with 5 which really is subtracting -14 with 5. Which gives you -9.

I'M SORRY BUT I CAN'T ANSWER THE THRID QUESTION. HOPE THIS HELPS!

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PLZ HELP ME ASAP PLZ PLZ PLZ!!!!! I NEED LOTS OF HELP!!! I USED 40 POINTS
cupoosta [38]
First, some defintions
reciprocals are like a/b and b/a or 5/1 and 1/5

remember, \frac{\frac{a}{b}}{\frac{c}{d}}=(\frac{a}{b})(\frac{d}{c})=\frac{ad}{bc}

john's fraction is reciprocal of sarah's
john=a/b
sarah=b/a

david multiplies his by sarah and gets 12/35
(b/a)(david)=12/35

multplies his number by john and gets 12/35
(a/b)(david)=15/7

hmmm

(b/a)(david)=12/35 and
(a/b)(david)=15/7

if we divide them then we do
\frac{(\frac{b}{a})(david)}{(\frac{a}{b})(david)}=\frac{\frac{12}{35}}{\frac{15}{7}}=
\frac{\frac{b}{a}}{\frac{a}{b}}=\frac{\frac{12}{35}}{\frac{15}{7}}=
(\frac{b}{a})(\frac{b}{a})=(\frac{12}{35})(\frac{7}{15})=
\frac{b^2}{a^2}=\frac{84}{525}=
\frac{b^2}{a^2}=\frac{4}{25}
square root both sides
\frac{b}{a}=\frac{2}{5}

therefor
b=2 and a=5

john's number is a/b=5/2
sarah's number is 2/5

david, hmm

sarah times david=12/35
2/5 times david=12/35
times both sides by 5/2
david=60/70
david=6/7

check other

john times david=15/7
5/2 times 6/7=15/7
30/14=15/7
15/7=15/7
true





sarah's favorite number is 2/5
john's favorite number is 5/2
david's favorite number is 6/7
6 0
3 years ago
Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
julsineya [31]
The answer is -8/1 two negatives equals negative which would be -11 then subtract positive 3 equals-8
7 0
1 year ago
Pleasee help me with this problemm
iragen [17]
(_/18+2_/3)^(2

=(3_/2^(2 + (2)(2_/3)(3_/2) + 2_/3^(2)

=18+ 12_/6 +12

=30+12_/6

hope this helps

3 0
3 years ago
Read 2 more answers
Your friend comes from a large family. This list shows the ages of all of the children in her family. What is the median age of
Lyrx [107]

Answer:

It is 11 and 4/7 I am pretty sure hope I helped!

5 0
2 years ago
If you’re good with set theory for math 30 please help with question 5!
grandymaker [24]

Answer:

D

Step-by-step explanation:

8 0
3 years ago
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