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Neporo4naja [7]
3 years ago
10

Can y’all help me on 8

Mathematics
1 answer:
neonofarm [45]3 years ago
6 0
If you go with the basic division formula and divide 42.5 by .75 you will get 56.6, but since you can’t have 2/3 of a book the correct answer would be 56
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a child find 29 nickels and dimes. how many dimes are there if the total value of the coins are $2.10?
DaniilM [7]
X represents nickels
y represents dimes
x+y=29
5x+10y=210
multiply the first equation by -5 (elimination method)
-5x-5y=-145
then add the two equations together
5y=65
divide 5 from both sides
y=13
13 dimes
3 0
3 years ago
Read 2 more answers
Omar was born on December 1, 1998, Omar's mom was born on January 18, 1965.
worty [1.4K]

Answer:

33 yrs old

Step-by-step explanation:count up to the year he was born

3 0
3 years ago
Given: 9x > -36.
balu736 [363]
<h2>Greetings!</h2>

Answer:

{x | x > -4}

Step-by-step explanation:

The direction of the < or > sign only changes when numbers are multiplied or divided by negatives.

Because to simplify 9x > -36 you only need to divide by 9, the sign stays the same and the numbers are simply divided:

\frac{9x}{9}  > \frac{-36}{9}

x > -4

So the solutuon set would be:

<h3>{x | x > -4}</h3>
<h2>Hope this helps!</h2>
8 0
3 years ago
Read 2 more answers
7 1/2 lb =_oz<br> please help me
KonstantinChe [14]
1 lb is equal to 16 oz, therefore 16 * 7 is 112oz then add 1/2 lb which is 8oz so the final answer is 120 oz
3 0
3 years ago
Look at the attachment<br>Simplified it too <br>pls take it seriously ​
Phantasy [73]

\\ \rm\rightarrowtail \dfrac{sin(180+A)+2cos(180+A).cos(A-180)}{2cos^2(360+A)-cos(-A)}

\\ \rm\rightarrowtail \dfrac{-sinA+2(cos^2A-sin^2A)}{2cos^2A-cosA}

\\ \rm\rightarrowtail \dfrac{-sinA+2cos^2A-2sin^2A}{cosA(2cosA-1)}

\\ \rm\rightarrowtail \dfrac{-sinA+2-2sin^2A-2sin^2A}{cosA(2cosA-1)}

\\ \rm\rightarrowtail \dfrac{-sinA-4sin^2A}{cosA(2cosA-1)}

\\ \rm\rightarrowtail \dfrac{-sinA(4sinA-1)}{cosA(2cosA-1)}

\\ \rm\rightarrowtail -tanA\left(\dfrac{4sinA-1}{2cosA-1}\right)

5 0
2 years ago
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