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Tanzania [10]
2 years ago
10

What is the value of the discriminant for the quadratic equation –3 = –x2 + 2x?

Mathematics
2 answers:
Leni [432]2 years ago
3 0

Answer:

16

Step-by-step explanation:

The quadratic equation –3 = –x2 + 2x must first be rewritten in standard form:  

x^2 - 2x - 3 = 0

or:

1x^2 - 2x - 3 = 0

The coefficients a, b and c are thus {1, -2, -3}, and therefore the discriminant, b^2 - 4ac, is

(-2)^2 - 4(1)(-3), or 4 + 12 = 16

emmainna [20.7K]2 years ago
3 0

Answer:

d) 16

Step-by-step explanation:

edge 2020-2021

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What is one plus one​
Ronch [10]

Answer:

2

Step-by-step explanation:

1+1=2

5 0
2 years ago
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Brett has a $30 online gift certificate. He plans to buy as many books as he can. The cost of each book is $4. There is also a s
kkurt [141]

Answer:

7 books

Step-by-step explanation:

make an equation

x = # of books each book is $4 so its 4x

the shipping fee no matter how many books he buys will be $2 so it's just 2

the equation looks like this:

4x + 2 = 30

we set equal to 30 cuz he can't spend more than $30

solve for x

4x = 30 -2

4x = 28

x = 7

Brett can buy no more than 7 books.

7 0
2 years ago
What is 1.8 added 8 times? (IF YOU CAN PLS DO IT IN EXPLANATION) and this is about decimals and pls do it in grade five type, bc
Salsk061 [2.6K]

Answer:

14.4

Step-by-step explanation:

1.8 added 8 times = 1.8 * 8

1.8 * 8

use distributive property

1.8 = 1 + 0.8

1.8 * 8 = (1+0.8) * 8

          = 1*8 + 0.8*8

anything multiplied by 1 equals itself

1*8 + 0.8*8 = 8 + 0.8 * 8

0.8 = 8/10

0.8 * 8 = (8/10) * 8

           = 64/10

            = 6.4

8 + 0.8 * 8 = 8 + 6.4 = 14.4 as our answer

8 0
2 years ago
-2x-6=10<br> Solve it because I don’t get it
solniwko [45]

Answer:

X = -8

Step-by-step explanation:

4 0
2 years ago
A.) Write an exponential expression: choose a prime number between 2 and 10 to be the base, and an even between 0 and 10, to be
Slav-nsk [51]

Answer:

e_3^{4} will be the exponential expression.

Step-by-step explanation:

We have to choose a number between 0 ad 10 and has to be odd to be base say 3

And even number between 0 ad 10 to be exponent  say 4.

So the exponential expression will be : e_3^{4}

According to the information given above expression is the required expression.

4 0
3 years ago
Read 2 more answers
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