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sergejj [24]
3 years ago
14

If the discriminant of a quadratic equation is 0 what is the roots ​

Mathematics
1 answer:
allsm [11]3 years ago
7 0

Answer:

double roots

Step-by-step explanation:

x=0 that make the discriminant 0

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The matrix C=[1,-2_-3,7] was used to encode a phrase to [7,-28,-25,-35,-2_-21,107,90,123,17]. Find C^-1 and use it to decode the
posledela
C=  \left[\begin{array}{cc}1&-2\\-3&7\end{array}\right]  \\ C^{-1}= \left[\begin{array}{cc}7&2\\3&1\end{array}\right]  \\ \left[\begin{array}{cc}7&2\\3&1\end{array}\right] \times   \left[\begin{array}{ccccc}7&-28&-25&-35&-2\\-21&107&90&123&17\end{array}\right]  \\ =\left[\begin{array}{ccccc}49-42&-196+214&-175+180&-245+246&-14+34\\21-21&-84+107&-75+90&-105+123&-6+17\end{array}\right] \\ =\left[\begin{array}{ccccc}7&18&5&1&20\\0&23&15&18&11\end{array}\right]
is the required matrix.
6 0
3 years ago
What two number that are the same have the product of 0.2 and the quotient of 0.8
Pie
Let the numbers be a and b, then ab=0.2 and a/b=0.8, so a=0.8b. Therefore, 0.8b^2=0.2 and b^2=0.2/0.8=2/8=1/4 and b=+1/2 or +0.5 and a=+0.8*0.5=+<span>0.4. The two numbers are therefore 0.5 and 0.4 or -0.5 and -0.4. The quotient is 0.4/0.5</span>
3 0
3 years ago
Read 2 more answers
12 = x • 3<br><br> How to solve?
liberstina [14]
The value of x is 4
so it says that 3 times __ equals 12.
so that means that u have to do 12/3 Wi-Fi i equals 4, so that is how u do it

hope this helps!!
8 0
3 years ago
3(4+2)=30<br> pls help me
vladimir1956 [14]

Answer:

Isn't it 18?

Step-by-step explanation:

Because you need to add 4 and 2 then multiply it with 3?

5 0
3 years ago
Ryan gets an allowance of $9 a week which he deposits into his bank account where he already has $45 he wants to buy some shoes
Stells [14]

Answer:

Step-by-step explanation:

First add the shoes and the toys: 63+54 = $117

Second subtract 45 dollars from $117 = 72

Third divide 72 by 9 = 8 weeks

Answer: 8 weeks

5 0
3 years ago
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