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neonofarm [45]
3 years ago
11

URGENT BECAUSE I'LL HAVE TO PASS THIS TODAY, Do you think it is always convenient to use the values of a, b and c of a quadratic

equation in determining its roots? Explain your answer
Mathematics
1 answer:
zaharov [31]3 years ago
8 0

Answer:

Yes, because these values always reflect their roots

Step-by-step explanation:

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Simplify: 3 . 3^2 + 8 ÷ 2 - (4 + 3) A: 32 B: 24 C: 23 D: 30
yaroslaw [1]

Answer:

its none of these answers ;-;

Step-by-step explanation:

3^2 + 8 ÷ 2 - (4 + 3)

we do what's in parentheses first. (pemdas)

so now we have, 3^2 + 8 ÷ 2 - 7

next exponents, 3^2=9

9 + 8 ÷ 2 - 7

next division, 8÷2=4

9 + 4 - 7

next addition, 9+4=13

13-7

finally subtraction, 13-7=6

final answer: 6

7 0
4 years ago
Explain what a​ P-value is. What is the criterion for rejecting the null hypothesis using the​ P-value approach?
ladessa [460]

Answer:

P-value or Probability value is the exact percentage where test statistics lie.The criterion for rejecting the null hypothesis using the​ P-value approach is that if P-value < Level of significance , then we reject our null hypothesis

Step-by-step explanation:

P-value or Probability value is the exact percentage where test statistics lie.

It also tells the probability of obtaining extreme results corresponding to our level of significance keeping in state that our null hypothesis is true or correct.

The criterion for rejecting the null hypothesis using the​ P-value approach is that if P-value < Level of significance , then we reject our null hypothesis i.e.  

Suppose P-value is 2.33% and Level of significance is 5%, then we will reject our null hypothesis as 2.33% < 5%.

On the other hand, if P-value > Level of significance , then we cannot reject or accept our null hypothesis.

5 0
3 years ago
Convert theta = 3pi/4 to rectangular form
Salsk061 [2.6K]
Ф = 3π/4. Transform it into Rectangular (or Cartesian) form .

The coordinates of Ф are x ,y  in rectangular form ==> so:

tan(Ф) = y/x and y=x . tan(Ф) ==> y= x. tan(3π/4). we know that tan(3π/4)= - 1

Hence y = - x
8 0
4 years ago
Read 2 more answers
Maria needs 3.87 feet of string to use as a border for her poster. Maria finds two pieces of string one that is 2.5 feet long an
lukranit [14]

Answer:x = 4.25 - 3.87 x = 0.38 feet

Step-by-step explanation::Find out the how much string will Mellisa have left over .To proveLet us assume that the  string will Mellisa have left over be x .As givenMelissa needs 3.87 feet of string to use as a border for her poster.Melissa finds a piece of string that is 4.25 feet long.Than the equation is write in the form. Therefore the  string will Mellisa have left over be  0.38 feet .

4 0
3 years ago
Which line has a slope -2?
ivanzaharov [21]

Answer:

B) Line B

Step-by-step explanation:

7 0
3 years ago
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