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lara [203]
4 years ago
5

Which of the following expressions are equivalent? Justify your reasoning.. . a.4√x3. . 1. x−1. . b.10√x5•x4•x2. . c.x. 1. 3. •x

. 1. d.3. •x. 1. 3.
Mathematics
1 answer:
sladkih [1.3K]4 years ago
7 0
A ) \sqrt[4]{ x^{3} } = x^{3/4}
B ) \frac{1}{ x^{-1} } = x
C ) \sqrt[10]{ x^{5} * x^{4}* x^{2}  } = \sqrt[10]{ x^{11} }= x^{11/10}
D ) x^{1/3} * x^{1/3} * x^{1/3} = x
Therefore: B = D
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Mama L [17]
If the probability of her having the winning ticket is 1., which equals 100%, then that means she bought all the tickets, so 1000 tickets
4 0
4 years ago
Which quadratic equation has roots –2 and 1/5?
AysviL [449]

Answer:

The equation 5x^2\:+\:9x\:-\:2\:=\:0 has roots –2 and 1/5.

Hence, the option 'a' is the correct answer.

Step-by-step explanation:

Checking the equation

5x^2\:+\:9x\:-\:2\:=\:0

putting x = -2 in the equation

5\left(-2\right)^2\:+\:9\left(-2\right)-\:2\:=\:0\:

2^2\cdot \:\:5-9\cdot \:\:2-2=0

2^2\cdot \:5-18-2=0

20-20=0

0=0

L.H.S=R.H.S

putting x = 1/5 in the equation

5\left(\frac{1}{5}\right)^2\:+\:9\left(\frac{1}{5}\right)-\:2\:=\:0\:

5\left(\frac{1}{5}\right)^2+9\cdot \:\frac{1}{5}-2=0

\frac{1}{5}+\frac{9}{5}-2=0

2-2=0

0=0

L.H.S=R.H.S

As putting x = -2 and x = 1/5 satisfy the equation.

Therefore, the equation 5x^2\:+\:9x\:-\:2\:=\:0 has roots –2 and 1/5.

Hence, the option 'a' is the correct answer.

4 0
3 years ago
The sum of three odd consecutive numbers is fifty-one. What are the numbers?
Fantom [35]

Answer:

15,17,19

Step-by-step explanation:

Make an equation : x+(x+2)+(x+4)=51

Solve the equation:3x+6=51

3x=51-6

3x=45

x=15

Since x=15 then the second number is 17 and then 19

Hope this helps!

Stay Safe

7 0
3 years ago
-2 2/3 divided by 1 5/6 + 2 <br> NO MIXED NUMBERS
oksano4ka [1.4K]

Answer:

14/15

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
What is the solution to the equation 9(x − 1) = 27? (1 point) x = 2.5 x = 0.5 x = −0.5 x = −3.5
Tems11 [23]

Step-by-step explanation:

Are you sure you wrote the answers correctly?

7 0
3 years ago
Read 2 more answers
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