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choli [55]
3 years ago
12

Find the solution of the following system of equations -5+2y=9 3x+5y=7

Mathematics
1 answer:
Rudiy273 years ago
5 0

Answer:

x=-\frac{28}{3}\\\\y=7

Step-by-step explanation:

Given the system of equations:

\left \{ {{-5+2y=9} \atop {3x+5y=7}} \right.

You can pply Substitution method:

First you must solve for "y" from the first equation:

-5+2y=9\\\\2y=9+5\\\\2y=14\\\\y=\frac{14}{2}\\\\y=7

Therefore, the second and final step to solve the system of equations is to substitute the value of "y" into the second equation and solve for "x":

3x+5(7)=7\\3x=7-35\\\\x=-\frac{28}{3}

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choli [55]
Given diameter 2cm
Find the area of a circle 
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the diameter is the radius times two 
so to find the radius given the diameter 2/2 = 1
radius is 1cm
pi is ~3.14
A = (3.14) * (1)^2
A = (3.14) * 1
A = 3.14

Hope this helps :)
7 0
3 years ago
Which expression 3- (-5) ?<br><br><br><br> Plz help me i need this
Anarel [89]

i believe that equals 8,if i am wrong,i am sorry  

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MakcuM [25]

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Step-by-step explanation:

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6 0
3 years ago
Josie is training for a race. The ratio of
anzhelika [568]

The number of minutes that Josie will take is 80 minutes.

<u>Explanation:</u>

<u />

Explanation:

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Let x be the number of minutes

According to the question,

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