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olga55 [171]
2 years ago
4

Which of the following expresses the possible number of positive real solutions for the polynomial equation shown below?

Mathematics
2 answers:
marusya05 [52]2 years ago
4 0

The answer is A. Two or zero

Apex (;

suter [353]2 years ago
3 0
The answer is to this question is letter "B. three or one". All of the roots of this equation could be real numbers. The imaginary roots come in pairs, one being the conjugate of the other. Thus, leaving only 1 of the roots real. 
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Given: AR ⊥ RS , TS ⊥ RS, AT=26, RS=24, AR=12 <br> Find: TS
BabaBlast [244]

Solution -

drawing a perpendicular from AQ to TS, we get a right angle triangle AQT

Using Pythagoras Theorem,

AT² = AQ² + QT²

⇒26² = 24² + QT²                    (∵ Due to symmetry AQ = RS)

⇒QT² = 676-576 = 100

⇒QT = 10

As TS = QT + QS = 12 + 10 = 22  ( ∵ Due to symmetry AR = QS )

∴ TS = 22 (ans)

3 0
2 years ago
Which equation represents a direct variation? y = 2x y = x + 4 y = x y =
Alona [7]
<span>The first equation is a direct variation. This type of equation has a form that is "y = kx," in which k is the constant. Changing both sides by a common multiple will still lead to the equation being evaluated as true, since the values will both increase by that multiple.</span>
4 0
2 years ago
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Mr. Barrow scored his high school students' essays on a scale of 0 to 10. He recorded data about the scores in the table below.
Fynjy0 [20]

09 08 07 06 10  1

wrryetryytrwertry (It was too short)

7 0
2 years ago
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Suppose that – in any given time period – a certain stock is equally likely to go up 1 unit or down 1 unit, and that the outcome
Scorpion4ik [409]

Answer:

Step-by-step explanation:

From the given information:

Let X represent the amount of the stock that goes up in the first period; &

Let Y denote the cumulative amount that goes up in the first three periods.

Then,

X= X_1 + X_2 \\ \\ \\EX=  EX_1 +EX_2\\ \\\\Now ; EX = 0 \\ \\ EX = \dfrac{1}{2}\times 1 + \dfrac{1}{2}\times -1 \\ \\ EX = \dfrac{1}{2}-\dfrac{1}{2} \\ \\ EX = 0

Cov(x,y) = Var(X_1) +Var(X_2) \\ \\ =\dfrac{1}{2}(1+1) + \dfrac{1}{2}(1+1) \\ \\ = \dfrac{1}{2}(2)+ \dfrac{1}{2}(2)  \\ \\ = 1+1  \\ \\ =2

Var (X) = Var (X_1+X_2)\\ \\ = 2 \ Var(X_1)  \\ \\ = 2 \times (1) \\ \\  = 2

Var (Y) = Var (X_1 +X_2+X_3) \\ \\ = 3 \times Var(X_1) = \\ \\ = 3 \times 1\\   \\ = 3

∴

Corr(x,y) = \dfrac{2}{\sqrt{6}} \\ \\ = \dfrac{2}{\sqrt{2\times 3}} \\ \\= \sqrt{\dfrac{2}{3}}

3 0
1 year ago
What is the coefficient of each monomial?<br> a. 5pk<br> b. f<br> c. –9t<br> d. –j
Semenov [28]

Step-by-step explanation:

<em>Look at the picture</em>

a. 5pk → 5

b. f = 1f → 1

c. -9t → -9

d. -j = -1j → -1

5 0
2 years ago
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