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Aleonysh [2.5K]
3 years ago
9

2x-3y=-11. 3x+2y=20 system of equations I'm not good at these at all I still can't solve any of them

Mathematics
1 answer:
baherus [9]3 years ago
5 0
Okay, so you what you would is solve one equation for Y=mx+b and then substitute this equation for Y so the answer would be Y=-3/2x + 20
And then you would do 2x-3(-3/2x+20)=-11 and you solve it for x
But to get y you would substitute what you got for x into ether equations.
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An equilateral triangle has a perimeter of 60m and a height of 17.3m. what is its area?
Simora [160]

The area of any triangle is            (1/2) x (length of the base) x (height) .

In this problem, we know the triangle's height,
but what is the length of the base ?

The base is the side that the triangle is sitting on.  This particular triangle
is an equilateral one, and its perimeter is 60m.  So each side must be 20m. 
No matter which side the triangle is sitting on, the length of the base is 20m.

           Area = (1/2) x (base) x (height)

           Area = (1/2) x (20m) x (17.3m) =  <em>173 m²</em>


3 0
3 years ago
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If 5% sales tax is added to her total, what is the greatest total cost of groceries Darla can spend in order to spend as close t
andrew-mc [135]

Answer:

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Step-by-step explanation:

Let the cost of the groceries be represented by c, then;

cost price + VAT = c + (5% of c)

To get the value of the cost, c, that would make him spend as close to $15. Since the tax is 5% of the cost price, then the cost price would be close to $15.

Let c = $14.20, then;

So that,

c + (5% of c) = 14.20 + (5% of 14.20)

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Thus, the greatest total cost of groceries Darla can spend in order to spend as close to $15 as possible is approximately $14.20.

7 0
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What kind of financial institutions does the Office of Thrift Supervision oversee?
xxTIMURxx [149]
Savings and Loan Institutions.
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Answer:

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1/3 (twix)

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3 years ago
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Delicious77 [7]
If the two angles of the triangle are equal. Well yes, because if the angles are both 50 degrees then the other angle will be 30. but it also depends on the shape of the triangle if they differ.
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3 years ago
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