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inn [45]
4 years ago
11

Whats the answer for 7x-3x^2=85+2x^2=2x and how do you solve it

Mathematics
1 answer:
stich3 [128]4 years ago
6 0
7x-3x^2=85+2x^2+2x\\\\7x-3x^2-85-2x^2-2x =0\\\\ -5x^2+5x-85 =0\ \ | \ divide \ each \ term \ by \ (-5 ) \\\\ x^2-x+17=0\\\\\Delta =   b^2-4ac  = (-1)^2-4 \cdot 1 \cdot17   = 1-68 =-67\\\\Answer : \ \  If \Delta
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Ali box 3 1\4 yards of blue ribbon for a craft project she bought 2 2\3 yards of green ribbon how much ribbon does she have in t
inn [45]
3 1/4 + 2 1/3 = 67/
12
= 5 7/12




Mark brainliest please


Hope this helps you
7 0
3 years ago
Paula drank 4 bottles of water containing 750 ml how many litres has she drunk
Alex17521 [72]
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3 0
3 years ago
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I need help with estimating, then finding the quotient and write the remainder if any as a fraction?
elena55 [62]
When estimating, you want to round the dividend and the divisor to the nearest time table number (i.e. 5700 --> 5400). Finding the quotient is easier when you estimate. Writing the remainder as a fraction is simple. First, get your remainder and your divisor, then make it to a fraction.

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8 0
3 years ago
Find the zeros of the function y=x^2-1
scoundrel [369]

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x * (-1) =-x

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7 0
3 years ago
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sveta [45]

Answer:

<em>B + 21</em>

or

<em>21 + B</em>

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<em>The sum of B and 21 </em>

<u>The sum of</u> : means to add B and 21

The algebraic expression would be: B + 21  or 21 + B (depending on how you/your teacher wishes it to be written)

4 0
3 years ago
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